Database Users

Power button stuck!!! Please help!!!

The power button on the side of my 8525 is stuck in and cannot be pressed! I cannot turn my phone off. I have tried to pry it very softly but it wont budge. The phone works perfectly, just the button cannot be pressed at all...
What can I do to fix it??? I have tmobile, so would cingular help me at all if I took it to them? Should I try to take it apart? I got the phone last feburary so ive had it for a while. Should I try to contact HTC America to see what they could do???
Thanks in advance for all your help!

PLEASE!!! Does anyone have any suggestions?? My phone hasnt been turned off and i dont know what to do! Is there any way i could assign the power function to another button???
Please help!

Well, the phone should shut down itself after a while (i.e. suspend), go to your Settings -> .. somewhere on the Power / Battery settings. But, before you do that, make sure you do not have your button locked. . or else you will not able to wake your unit up (since you have a dead power button).
Anyway, there is no way of mapping the power button to another button. BUT, there is a software approach. Called ShutDown, (i.e. http://myitforum.com/articles/9/view.asp?id=6766), which seems to able to give you a shutdown thing like Windows. It does cause some problem though (i.e. hanging WM6 phones, in the Start->Programs).. not sure if it will cause problem with yours. But you can always reset your phone anyway (i.e. poke the reset button).
If you are comfy of taking it apart, I think you can do it. I think there are service manual for this. Look for "mikechannon" (a mod here) for his webpage for manuals. Or harrass him by PM him Note your warranty though. Or, you can buy a cheap Cingular PAYG card (if they have it there, I'm not in US) and pretend to be their customers? Try HTC US first? You have to make your own decision.

hanmin said:
Look for "mikechannon" (a mod here) for his webpage for manuals. Or harrass him by PM him
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I'm watching you Hanmin
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But seriously, if your lucky it's just the outer plastic switch cover that's stuck and not the micro switch that's jammed.
The manual you'll find in my signature webpage.
Mike

mikechannon said:
I'm watching you Hanmin
Click to expand...
Click to collapse
HOW? HOW? HOW? You should not know this. You freak.. you keep searching for your own name in the forum, huh? I'll probably have to l33k speak.. harass m|[email protected]

This happened to me a few weeks ago, I dropped it and it landed on the leg of an office chair, on its power button.
First of all I went into settings and told it not to lock the screen and buttons so that I didnt get locked out of my phone.
I then basically, fiddled with it for a while, using various pointy implements to try to free it, but I didnt manage to. After a day or two of normal use (making sure the battery didnt run out!) the phone occasionally asked me if I was sure I wanted to turn it off, just like it does when you press the power button, so the button had come loose a bit, but only to the extent that it occasionally engaged itself. Soon after I could press it in a tiny bit and sometimes it would engage, but it was unreliable. Anyway, it got better the more I pressed it untill now it's as good as new.
My advice to you is just give it as much 'attention' as you can, and it should soon dislodge.
Sebastian

Well, I am still having the problem.. I havent turned off my device in over 13 days and it is killing my battery life... It doesnt even last a day anymore... Does anyone else have a solution? The thing is that the screen flickers on and off like its being pressed when its not... I dont know... I believe that that as something to do with the power decrease...
Can I try to pry it lose??? What exactly is causing it to be pressed??? Can I put in a pay as you go card and have att fix it???
Any advice would help!
thanks!

You got some advice on here. Did you try to follow any of it?

Ive folowed everything! HTC wants $125 to repair my stuck power button. I am not completely comfortable taking it apart, but if i was given pretty decent instructions i could probably attempt it... The power button is not broken, it is just stuck... because when i pry at it, it activates itself...
help!

Does anyone have anything?!?!? it is still broken.. Any suggestions would be greatly appreciated!

bump for any more suggestions... PLEASE!!

Rjp20 said:
bump for any more suggestions... PLEASE!!
Click to expand...
Click to collapse
I've got the same problem, except my phone keeps prompting me every so often if I want to turn off. Generally its just irritating. Every so often it turns off, which is a pain.
Once I get my hands on a screwdriver which fits I'll be firing in to open it up and hopefully fix it. I'll let you know how it goes.

Any new updates??? Please help!

anything?!?!? Please!!! Im still having this problem!

Rjp20 said:
anything?!?!? Please!!! Im still having this problem!
Click to expand...
Click to collapse
Sorry, I wimped out opening mine up when I finally found my paperwork and confirmed that I've still got my warrenty till the end of the month so took it back to Tmobile who are fixing it at the moment. I'll let you know if it gets fixed or gets the thumbs down.

sebw36912 said:
This happened to me a few weeks ago, I dropped it and it landed on the leg of an office chair, on its power button.
First of all I went into settings and told it not to lock the screen and buttons so that I didnt get locked out of my phone.
I then basically, fiddled with it for a while, using various pointy implements to try to free it, but I didnt manage to. After a day or two of normal use (making sure the battery didnt run out!) the phone occasionally asked me if I was sure I wanted to turn it off, just like it does when you press the power button, so the button had come loose a bit, but only to the extent that it occasionally engaged itself. Soon after I could press it in a tiny bit and sometimes it would engage, but it was unreliable. Anyway, it got better the more I pressed it untill now it's as good as new.
My advice to you is just give it as much 'attention' as you can, and it should soon dislodge.
Sebastian
Click to expand...
Click to collapse
Same here, mine got stuck in and i almost had to send it off, but if by magic it unstuck itself and now it is fine again.

pls heeeeeeellllllp!!!!my phone is not turning on and is not charging!!!!!!pls someone help me!? is a spv c600

New Nexus 7 DEAD!

I have just received my new nexus 7 from Google Play Australia.
However, It does not work. I think Google sent me a dead device. No matter how I did to the power button, the device just won't power up. It shows me nothing but a lot of black and white lines.
I have taken a picture for the situation. Is there any help?
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I don't know if you have UPS where you are at, but when I order a electronic device I will not let them send it via UPS, I don't know if its just me but it seems like they wind up breaking what ever I order,
Sent from my SAMSUNG SIII I747 running cm-10

Yeah, its dead, try holding down the volume DOWN and the power key for 10 seconds, then release the power key and keep the volume down key pressed, and it will force the unit to restart into the bootloader from any stage, its effectively like pushing the restart button on the front of a computer and constantly pressing the delete key to get into the bios.
if you can get into the boot loader, follow this guide http://forum.xda-developers.com/showthread.php?t=1781250 I followed it myself to un-brick mine when I stuffed up the dpi change
if not then its busted and there is probably nothing you can do.
It looks like its attempting to display the black screen with the white android logo but the LCD panel is stuffed, IMHO.
they should mail out a replacement for you free of charge and that replacement will come with a postage voucher to send it back to them, probably looking at a week turn around.
off topic, mine was delivered by FedEx in Australia on Friday, boxed inside another box surrounded by bubble wrap, it was pretty well protected,the outside box has a little "cardboard rugby" damage but the unit is 100% A OK

night252 said:
I don't know if you have UPS where you are at, but when I order a electronic device I will not let them send it via UPS, I don't know if its just me but it seems like they wind up breaking what ever I order,
Sent from my SAMSUNG SIII I747 running cm-10
Click to expand...
Click to collapse
they sent me this device by fedex.
Sent from my Galaxy Nexus using Tapatalk 2

it can boot into recovery mode cause I can use fastboot command. But I cant see anything since the screen fullfilled by those strange lines.
Sent from my Galaxy Nexus using Tapatalk 2

Get it RMA'ed. I'm in Melbourne and I did this with my first N7 with a defective screen. The new one arrived today and took about a week. I am yet to open it, let's hope it's all good!

smt8544 said:
Get it RMA'ed. I'm in Melbourne and I did this with my first N7 with a defective screen. The new one arrived today and took about a week. I am yet to open it, let's hope it's all good!
Click to expand...
Click to collapse
Good luck for u then.
just one question, do I need to send the broken one back to Google first if I request replacement?

aspirin.11 said:
Good luck for u then.
just one question, do I need to send the broken one back to Google first if I request replacement?
Click to expand...
Click to collapse
Nope, they will send you a new one and then upon receiving that, you have 21 days to return the original.

Execellenet
davidcampbell said:
Yeah, its dead, try holding down the volume DOWN and the power key for 10 seconds, then release the power key and keep the volume down key pressed, and it will force the unit to restart into the bootloader from any stage, its effectively like pushing the restart button on the front of a computer and constantly pressing the delete key to get into the bios.
if you can get into the boot loader, follow this guide http://forum.xda-developers.com/showthread.php?t=1781250 I followed it myself to un-brick mine when I stuffed up the dpi change
if not then its busted and there is probably nothing you can do.
It looks like its attempting to display the black screen with the white android logo but the LCD panel is stuffed, IMHO.
they should mail out a replacement for you free of charge and that replacement will come with a postage voucher to send it back to them, probably looking at a week turn around.
off topic, mine was delivered by FedEx in Australia on Friday, boxed inside another box surrounded by bubble wrap, it was pretty well protected,the outside box has a little "cardboard rugby" damage but the unit is 100% A OK
Click to expand...
Click to collapse
I wasn't holding down the vol down button but was releasing them all at once.. I thought I has a brick but I guess I got lucky. Thanks!

davidcampbell said:
Yeah, its dead, try holding down the volume DOWN and the power key for 10 seconds, then release the power key and keep the volume down key pressed, and it will force the unit to restart into the bootloader from any stage, its effectively like pushing the restart button on the front of a computer and constantly pressing the delete key to get into the bios.
Click to expand...
Click to collapse
M8 you just saved my life.... My screen went of and the device wouldn't turn on anymore just like that... Planning a trip to the store already for an exchange... Luckily I saw your post, and it worked, my Nex is back alive!!!

[Q] Power Button Broken Is there a Way to Start The Phone?

Hey everyone,
My apologies if this has been covered I did several searches and didn't find anything.
Short story: I dropped my phone in the toilet.....walked into the bathroom and fumbled it. Pulled it out pretty quickly it had a soft and hard case on it that helped prevent some water form getting in. Now everything works except the power button. It ran out of battery before I could get home to charge it yesterday. Now with a broke power button I don't know how to turn it on.
- Dropped it in the water 2 days ago
-USB debug was not enabled
-I can get it into download mode (not sure if this is relevant)
Thank you for taking the time to read, if you could use anymore info let me know.

Have you tried the usual rice procedure? Leaving it in a bowl of dry rice for approx. a day. If you haven't, I'd wait for more insight by experienced gurus as I'm not totally sure, but I think there is some way to turn the device on from download mode, which you said you can access.

MillerTime33 said:
Short story: I dropped my phone in the toilet.....walked into the bathroom and fumbled it. Pulled it out pretty quickly it had a soft and hard case on it that helped prevent some water form getting in. Now everything works except the power button. It ran out of battery before I could get home to charge it yesterday. Now with a broke power button I don't know how to turn it on.
- Dropped it in the water 2 days ago
-USB debug was not enabled
-I can get it into download mode (not sure if this is relevant)
Click to expand...
Click to collapse
Well, at least there wasn't anything else in the toilet...
You could try disassembling the phone. You'll need a T5 TORX driver, a very small Phillips driver, and something thin and plastic to pull the case halves apart like a guitar pick or plastic knife. Go to ifixit.com and look up the tear-down guide.
It could be that the contacts for the power button board were corroded. Head to Radio Shack or whatever the equivalent is that you have wherever you are and pick up some Progold and Deoxit. Deoxit removes corrosion, Progold improves conductivity. If that doesn't work, you could try buying a new power button board off eBay; they're pretty cheap.

Planterz said:
Well, at least there wasn't anything else in the toilet...
You could try disassembling the phone. You'll need a T5 TORX driver, a very small Phillips driver, and something thin and plastic to pull the case halves apart like a guitar pick or plastic knife. Go to ifixit.com and look up the tear-down guide.
It could be that the contacts for the power button board were corroded. Head to Radio Shack or whatever the equivalent is that you have wherever you are and pick up some Progold and Deoxit. Deoxit removes corrosion, Progold improves conductivity. If that doesn't work, you could try buying a new power button board off eBay; they're pretty cheap.
Click to expand...
Click to collapse
Ok thank you guys for the replies. It seems like I will have to give your suggestion a try I already have the tools so it shouldn't be a big deal. Just to confirm there is no way to start it without the power button? Like I said I can get it into download mode by holding down the volume rocker when inserting a usb. Thanks again its much appreciated.

MillerTime33 said:
Just to confirm there is no way to start it without the power button? Like I said I can get it into download mode by holding down the volume rocker when inserting a usb.
Click to expand...
Click to collapse
In the state your phone is in, I don't think so.
There are ways to turn the Nexus 4 on by means other than the power button. For example, there are apps that utilize the proximity sensor to unlock your phone by waving your hand in front of it. If you're rooted with the bootloader unlocked you can flash a custom kernel that enables various ways of waking the screen and sleeping it via touch (these aren't 100% though). If you're rooted, you can use Xposed modules to remap your buttons, and you could use the volume rocker instead of the power button.
But all those require your phone to at least be ON first, so they're not an option for you until you can actually get your power button working.
There is one possibility that didn't occur to me last night. A co-worker of mine is in practically the same situation as you (substitute your toilet for a mop bucket) with his Nexus 4. He uses the proximity sensor hand waving thing to wake/sleep his phone since his power button doesn't work. When Towelroot came out, I rooted it for him and installed a root rebooter so he can reboot if he needs to. But he's also able jam a thin knife through the case where the button is and short the contacts and turn it on/off that way.
So what you could try when you disassemble the phone is to try shorting the contacts with a piece of wire or paper clip. Take off the back cover, remove the plastic piece that covers the logic board (but don't remove/disconnect anything else. The phone should still operate (or would if your button wasn't damaged). If you're able to turn on your phone in this manner, then try cleaning the contacts and/or replacing the board as I mentioned earlier.
Good luck.

MillerTime33 said:
Hey everyone,
My apologies if this has been covered I did several searches and didn't find anything.
Short story: I dropped my phone in the toilet.....walked into the bathroom and fumbled it. Pulled it out pretty quickly it had a soft and hard case on it that helped prevent some water form getting in. Now everything works except the power button. It ran out of battery before I could get home to charge it yesterday. Now with a broke power button I don't know how to turn it on.
- Dropped it in the water 2 days ago
-USB debug was not enabled
-I can get it into download mode (not sure if this is relevant)
Thank you for taking the time to read, if you could use anymore info let me know.
Click to expand...
Click to collapse
Try Wugs Toolkit, It works even on power off.

Planterz said:
In the state your phone is in, I don't think so.
There are ways to turn the Nexus 4 on by means other than the power button. For example, there are apps that utilize the proximity sensor to unlock your phone by waving your hand in front of it. If you're rooted with the bootloader unlocked you can flash a custom kernel that enables various ways of waking the screen and sleeping it via touch (these aren't 100% though). If you're rooted, you can use Xposed modules to remap your buttons, and you could use the volume rocker instead of the power button.
But all those require your phone to at least be ON first, so they're not an option for you until you can actually get your power button working.
There is one possibility that didn't occur to me last night. A co-worker of mine is in practically the same situation as you (substitute your toilet for a mop bucket) with his Nexus 4. He uses the proximity sensor hand waving thing to wake/sleep his phone since his power button doesn't work. When Towelroot came out, I rooted it for him and installed a root rebooter so he can reboot if he needs to. But he's also able jam a thin knife through the case where the button is and short the contacts and turn it on/off that way.
So what you could try when you disassemble the phone is to try shorting the contacts with a piece of wire or paper clip. Take off the back cover, remove the plastic piece that covers the logic board (but don't remove/disconnect anything else. The phone should still operate (or would if your button wasn't damaged). If you're able to turn on your phone in this manner, then try cleaning the contacts and/or replacing the board as I mentioned earlier.
Good luck.
Click to expand...
Click to collapse
I've opened it up but I'm having trouble determining the where the contacts are I need to short and haven't found a diagram online. Could you direct me to where they are located on the board? I attached a picture of the board.
Thanks
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MillerTime33 said:
I've opened it up but I'm having trouble determining the where the contacts are I need to short and haven't found a diagram online. Could you direct me to where they are located on the board? I attached a picture of the board.
Thanks
Click to expand...
Click to collapse
I circled the contact points. I believe these points, when shorted, should complete the circuit and make the device think the power button is being pressed. Actually, it's not a short, you're just completing a circuit, but I can't think of the proper term for what it's doing.
EDIT: I tried it on mine, and completing a circuit between those 2 contacts definitely works to activate the power button. If it doesn't work on yours, then either the contacts are too corroded or you need a new power button board.

And if they are too corroded, you can use some rubbing alcohol to remove it!
Planterz said:
I circled the contact points. I believe these points, when shorted, should complete the circuit and make the device think the power button is being pressed. Actually, it's not a short, you're just completing a circuit, but I can't think of the proper term for what it's doing.
EDIT: I tried it on mine, and completing a circuit between those 2 contacts definitely works to activate the power button. If it doesn't work on yours, then either the contacts are too corroded or you need a new power button board.
Click to expand...
Click to collapse

@MillerTime33
Any luck?

P580 Power Issues?

Hey all, I recently bought a P580 when I was out in the States with work (I'm back in the UK now). Whilst I was out there it was working fine and when I came back it was working fine when I originally tried it out - I didn't want to use it much as it was supposed to be a gift but wanted to make sure it was all set up and stuff. Second time I tried it, it won't power on. I've tried multiple USB cables, multiple wall plugs and tried charging it on my PC. Nothing seems to get it to power on.
Everytime I connect and disconnect it to my PC I get the audible tone that says a device was connected but that's it. Samsung's Smart switch doesn't recognise it either. Talking to their support, I've tried holding Power + Volume down + home button but that doesn't seem to do anything other than disconnect it from the PC and holding the Power button for more than a minute doesn't seem to do anything either.
I hadn't rooted the device, in fact I'd barely done anything other than install a couple of apps like Facebook, Snapchat and Youtube. Does anyone know what's going on with the device and is there anything I can do? I'd definitely prefer not to send it back to Samsung as they won't accept it in the UK support so I'd have to send it back to the US support.
Anyways, if anyone has any advice it would be GREATLY appreciated. Thank you.

It's not a power but display issue. If you can hear the sound in the background or press volume up and down and you can hear the sound, it mostly has the loose LCD cable.
Search Youtube how to open your tablet, the tool you may need is a guitar pick.
Disconnect the battery first. You only need to disconnect and reconnect the LCD cable. The locking tab is at the top of the connector, lift it gently up 90 degree and be careful, otherwise you might break it. All connectors are unlocked by lifting up from the top 90 degree and they're very easy broken if you're not careful.
Here the LCD cable ( black ) is just slightly below the line on mainboard, you will have a black screen
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This one, the LCD cable is fully seated.
This connector is weakly hold the cable, you can pull the cable out while is in locking position. So you need put tapes over the connector and cable to hold it firmly, another one at the center of the battery to prevent if from moving. Battery should be back, otherwise you'll see nothing. Test by plugging your charger and press the HOME button, you should see the battery icon briefly if everything you're done correctly.

Beut said:
It's not a power but display issue. If you can hear the sound in the background or press volume up and down and you can hear the sound, it mostly has the loose LCD cable.
Search Youtube how to open your tablet, the tool you may need is a guitar pick.
Disconnect the battery first. You only need to disconnect and reconnect the LCD cable. The locking tab is at the top of the connector, lift it gently up 90 degree and be careful, otherwise you might break it. All connectors are unlocked by lifting up from the top 90 degree and they're very easy broken if you're not careful.
Here the LCD cable ( black ) is just slightly below the line on mainboard, you will have a black screen
This one, the LCD cable is fully seated.
This connector is weakly hold the cable, you can pull the cable out while is in locking position. So you need put tapes over the connector and cable to hold it firmly, another one at the center of the battery to prevent if from moving. Battery should be back, otherwise you'll see nothing. Test by plugging your charger and press the HOME button, you should see the battery icon briefly if everything you're done correctly.
Click to expand...
Click to collapse
Hey, thank you for the reply! I opened up my Tab and it was loose. Unfortunately being a complete beginner I think I f****d it up and ruined the cable - imgur dot com/a/kvP8Z ( I cant post links)
Am I going to have to replace that now as it still doesn't seem to be working.. :/
Other than that I can't see anything else that might be wrong with it whilst it's opened up??
Again, thanks for your help, it's MASSIVELY appreciated!

Sn0wtek said:
Hey, thank you for the reply! I opened up my Tab and it was loose. Unfortunately being a complete beginner I think I f****d it up and ruined the cable - imgur dot com/a/kvP8Z ( I cant post links)
Am I going to have to replace that now as it still doesn't seem to be working.. :/
Other than that I can't see anything else that might be wrong with it whilst it's opened up??
Again, thanks for your help, it's MASSIVELY appreciated!
Click to expand...
Click to collapse
Speaking from experience, you are in a tight spot now... if you did what I did. I had a Tab S and I opened it up to replace the charging port. Different pieces, but same steps as listed above. I broke the locking tab that holds the cable down. My only recourse was to replace the motherboard. Long story short, it was easier (and not much more expensive) to buy a new tablet. I know this isn't what you want to hear. Sorry about your luck.
HOWEVER, my problem was with supply, my S was old and I couldn't find a new motherboard and the website I found was "out of stock" of used ones priced high. Since you have a fairly new device, you might be able to find a replacement much easier.

Bdozier said:
Speaking from experience, you are in a tight spot now... if you did what I did. I had a Tab S and I opened it up to replace the charging port. Different pieces, but same steps as listed above. I broke the locking tab that holds the cable down. My only recourse was to replace the motherboard. Long story short, it was easier (and not much more expensive) to buy a new tablet. I know this isn't what you want to hear. Sorry about your luck.
HOWEVER, my problem was with supply, my S was old and I couldn't find a new motherboard and the website I found was "out of stock" of used ones priced high. Since you have a fairly new device, you might be able to find a replacement much easier.
Click to expand...
Click to collapse
I don't think that the locking mechanism is effected, but I scuffed the black LCD cable thing and it's now showing some of the bronze beneath it.. I thought that maybe that was causing it to not just work now that the cable's in the correct position? If it's the case that I've completely ruined the device and that I can't do anything with it, I don't know if I can justify getting a second one in such a short space of time. :/

Sn0wtek said:
I don't think that the locking mechanism is effected, but I scuffed the black LCD cable thing and it's now showing some of the bronze beneath it.. I thought that maybe that was causing it to not just work now that the cable's in the correct position? If it's the case that I've completely ruined the device and that I can't do anything with it, I don't know if I can justify getting a second one in such a short space of time. :/
Click to expand...
Click to collapse
That's good. You might be able to find a replacement cable or even just put a small piece of electrical tape over the scuffed segment... Depending on how deep the scuff is. There are a lot smarter people on this board that may be able to advise you better.
Just searched "galaxy tab a 10.1 lcd cable" and they are pretty inexpensive. Cheaper than a new tablet! About $2 USD.

Sn0wtek said:
I don't think that the locking mechanism is effected, but I scuffed the black LCD cable thing and it's now showing some of the bronze beneath it.. I thought that maybe that was causing it to not just work now that the cable's in the correct position? If it's the case that I've completely ruined the device and that I can't do anything with it, I don't know if I can justify getting a second one in such a short space of time. :/
Click to expand...
Click to collapse
Try to tape the LCD cable down to the mainboard, I don't know how bad you damaged it. This LCD cable is not easy to take out as the section connected to LCD is under the frame.
In order to take it out, you have to cut the frame. It's easier than heating up the whole assembly to remove the touchscreen and LCD from the frame. Newbie will most likely damage them in this process.

Beut said:
Try to tape the LCD cable down to the mainboard, I don't know how bad you damaged it. This LCD cable is not easy to take out as the section connected to LCD is under the frame.
In order to take it out, you have to cut the frame. It's easier than heating up the whole assembly to remove the touchscreen and LCD from the frame. Newbie will most likely damage them in this process.
Click to expand...
Click to collapse
See Sn0wtek... A much smarter person than me!

This is the proper way to secure LCD cable both SM-T580 and SM-P580, without tape the cable will loose again.
This is another bad design from Samsung, the motherboard has no screw to hold it at the bottom. It can wobble easily, that's reason you need tapes to hold the LCD cable to mainboard , prevent it from moving out of the connector.

SM-T580 Bricked On Flashing Nougat 7.0 ROM XAR-T580UEU2BQF1-20170623075724

Hello all,
After numerous successful ROM flashes on my Note 2 and Note 4, the S8+ put me on a flashing hiatus that I've now returned to with the Galaxy Tab A 10.1 that I bought a week ago. In this case, it was merely to install TWRP and root the tablet, which I successfully did using Odin_3.12.3, TWRP_3.2.3-4-gtaxlwifi-OMNI6.tar, SR5-SuperSU-v2.82, and no-verity-no-encrypt_ashyx. What I had forgotten from "the old days" of the Note 4 , was that rooting interferes with Snapchat, and that led me into looking for root hiding options and ultimately Magisk-v15.3 which I decided to install only after reflashing the original stock Nougat 7.0 ROM. However, I never got that far. After the flash of the ROM, my tablet failed to reboot, giving only a series of 5 different screens (image below) of multicolored banding and no access to the recovery mode.
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I've tried numerous 3-finger salutes, varying my timing on them in the event that I just wasn't getting the HOME+VolDwn+Pwr with switchover to HOME+VolUp actions quite right. I've also tried every other button combination I could, inclusive of holding them for as long as 3 minutes just in case that too might factor in. Zero, zip, nada....just the same series of screens full of color bands and no proper screen draw for the recovery menu. When all this failed, I moved into popping the back and disconnecting the battery, then using USB power only, with the same 3-button actions as well as trying some without the HOME key, but never finding anything that would boot to a readable, usable recovery menu.
Reading that the ADB platform tools can be used with fastboot to access the recovery menu, that was my next step, but my tablet would never show up as detected. I've searched for anything I could think of that might help, only to find that anything even vaguely similar was still expecting one to get to the recovery menu.
For the moment, I glad the Tablet A 10.01 was only $149, and I anticipate going to buy another one this weekend if I cannot solve this apparent bricking issue. With Odin and a stock image on hand, I stubbornly want to believe that a brick can still be overcome, but I'll be darned if I know how.
Any suggestions are greatly appreciated on how I might resolve this problem. Thanks!

Hold the Home, Vol down and Power buttons for about ten seconds. When the green screen appears, release the buttons and press Vol up. This should put you in the download mode. Then reflash the stock ROM via Odin. But only the AP and BL files.

Thanks Lewmur, I tried your suggestion, but specifically only in that you say release all buttons and press just the VolUp button. That may be one combination I have not tried before, usually seeing folks saying to keep HOME depressed as well, the exception possibly being when the battery has been disconnected. Regardless, the biggest issue seems to be I never get the green screen. I did talk only of the recovery mode being inaccessible, so that was my fault. Neither recovery mode nor download mode seem available. I have tried switching to the VolUp button at the point where the tablet blacks out (presumably no power present) as well as at each of the 5 screens where different color stripes were noted. Nothing has worked. I did notice when charging that the area around the left soft button gets warm, but assume that is simply where the charging circuitry is and regarded as normal behavior. I've never noticed it before but the way I've been handling the tablet versus normal use may be the simple explanation for that. In any case, I guess I'm off to get a new tablet. Thank you!

ambress said:
Thanks Lewmur, I tried your suggestion, but specifically only in that you say release all buttons and press just the VolUp button. That may be one combination I have not tried before, usually seeing folks saying to keep HOME depressed as well, the exception possibly being when the battery has been disconnected. Regardless, the biggest issue seems to be I never get the green screen. I did talk only of the recovery mode being inaccessible, so that was my fault. Neither recovery mode nor download mode seem available. I have tried switching to the VolUp button at the point where the tablet blacks out (presumably no power present) as well as at each of the 5 screens where different color stripes were noted. Nothing has worked. I did notice when charging that the area around the left soft button gets warm, but assume that is simply where the charging circuitry is and regarded as normal behavior. I've never noticed it before but the way I've been handling the tablet versus normal use may be the simple explanation for that. In any case, I guess I'm off to get a new tablet. Thank you!
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Are you sure you held the Vol down and not the Vol up? They are reversed from what I'd expect. The vol down is furthest from power. Holding that long enough should at least bring up the first green screen. Then changing to download just takes pressing vol up. What happens when you hold those keys?

You may try to reseat the LCD cable, the line on the cable is just a little bit below the line on mainboard, you may have discoloration or black screen. Disconnect the battery first to avoid any short circuit if you do something wrong with cables.
Gently lift the locking clip up 90 degree, then push the LCD cable all the way in, then push the clip down to lock the cable. Be careful with the clip as it's easily broken if using force unevenly.
Loose LCD cable is common problem of this model. Reconnect your battery and connect your tablet to USB cable and charger, look for the flashing green of battery on the screen. If it shows up normally, problem solved.

Yes Lewmur, I was holding down the correct buttons and actually tried the reverse also, just to be sure I had all bases covered. Definitely VolDn is furthest from the Power, although to me that seemed intuitive. Problem solved though, tablet replaced by the store with a half-truth shared of "It isn't booting properly", but without elaborating.

Thanks Beaut....reseating the LCD cable definitely was not something I gave consideration to since I'd done nothing to disturb it and the tablet had been handled carefully over the 12 days I had it. Still, it would've been prudent to explore, I just didn't think about that as being a likely issue. Good info to have moving forward however, thanks again!

ambress said:
Thanks Beaut....reseating the LCD cable definitely was not something I gave consideration to since I'd done nothing to disturb it and the tablet had been handled carefully over the 12 days I had it. Still, it would've been prudent to explore, I just didn't think about that as being a likely issue.
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Trust me, 8 of 10 tab A has the issue of black screen due to loose LCD cable. People don't do anything but the getting the black screen because the OEM tapes are too weak to hold the long cable firmly to the connector.
This is common, that I suggest to take a look at it. It may or may not relate to your problem.

Glad that you were able to fix this (by returning the tablet). But for anyone else coming to the thread, I ran into the same problem after flashing twrp when I first got the tablet.
The screen will appear as if it's completely broken. At first I thought flashing a custom kernel messed with the screen's power input and it was physically broken, but it wasn't.
The normal key combos didn't work since I kept getting a bootloop. I don't remember exactly what I did. But I think I held down volume up+volume down+power to force a restart,
then quickly change to volume down+home+power or something like that, the order was important too iirc, I wish I wrote it down. Then I flashed a stock rom and everything was as good as new.
Then I used cfroot to root first before doing anything else.

Thanks....yeah, I too had troubles when I flashed the version of TWRP called out in a post about how to root the SM-T580, getting the screen banding but of a very different nature from the one I described by the images I posted. Fortunately, I found a thread on that specific problem and learned of an updated TWRP beta, the 3.2.3-4-gtaxlwifi-OMNI6.tar release, and that resolved the issue and gave me a good boot into recovery. From there I was able to proceed without issue, installing SuperSU to achieve the rooting. I didn't know of or install Magisk at the time, and only later learned of it, reflashing the OEM ROM to start clean. It was after that when the bootloop with banded screens occurred. It did smack of being video driver issues or something, and I didn't really think about the video cable itself being loose, so props to Beaut for mentitioning it although I'd already returned the tablet. I did look at the cables when I opened the tablet up, a couple of times in fact, and saw nothing obvious but also didn't scrutinize them closely. While I don't discount the possiblity of a loose cable, just the nature of how the problem arouse simply following a reboot after a ROM flash just suggests some other problem. It's sure good news to hear you worked through similar problems even if not knowing exactly what you did right. I exercised numerous button pushes in including what you mentioned, so it may well boil down to the timing in switching from one set of depressed buttons to another. Thanks for sharing!