[Q] No power at all - please help diagnose - HD2 General

I bought an hd2 that would not power on from somebody on ebay. I have some experience with small electronics and phones so I thought I would give it a shot. The phone also came with a set of beats tour headphones and a power mat which I can use with my working phone (or more to the point my wife will steal) so I don't feel like I got ripped off.
Anyway, this phone is completely dead. The person that sold it to me said it was running an Android ROM and then was just dead one day. I was really hoping that he just let it power down all the way and it wouldn't charge because I had read that hd2s will not charge when powered down if they have magldr installed. He didn't sound too savvy about phones.
There is nothing going on at all. No LED when plugged in. The battery doesn't get warm. Nothing happens when I press buttons and it doesn't mount or anything when I connect it to a computer. The water indicator is solid white.
I have tried a different battery which I charged with an external charger and different chargers etc. It feels a little like the usb connector could be loose. I can understand how that might prevent it from charging but it should still work with a charged battery right? Same with the battery connectors. I know the pins can have issues but it should still power on when plugged in right?
Could something be loose inside? I am thinking about pulling it apart and trying some surgery.
Does anyone have any ideas? Any help would be greatly appreciated. It is a beautiful phone in perfect condition so I would really like to use it.

is it a tmous? (red end green send keys) and if so, does it ask for qualcomm drivers and then say drivers not found when you usb it to the pc?

Sounds like you may have as hard bricked HD2(I am betting you have a TMOUS HD2). If it is hard bricked it can only be revived with JTAG. If it turns out to be hard bricked PM me and I can point you to someone that JTAGS HD2's all the time and for a very low price.
Now if none of the battery pins are not bent and you do have a charged battery. I would sugest you try pressing the power button several times rapidly. I have to do it with my HD2, the power button on the HD2's are none to start giving users problems. Also make sure to hold down the volume down button while you try to power it on to see if it boots into the bootloader. If you can not get it to do either of these then as I said before you are probably hard bricked.

Thanks for the info and quick replies. Yes, it is a tmobile hd2. I guess I should have mentioned that.
I get nothing when I plug it in to a computer. It doesn't try to load drivers or anything. I tried two different computers. I also tried the rapid fire on the power on button but I didn't get anything.
I will PM you about getting it jtag unlocked. It is such a cool looking paper weight.

hmm i wouldnt be so quick, , since it doent respond to usb, it could be actually broken, not just radio bricked, and jtag may not fix it. If you are already fairly happy with the other items in the purchase, it might be better to simply sell teh phone as unknown condition - parts, recoup a few $$ and buy a cheap working one. JTAG will cost you, not a lot, but enough to make it worth considering other options.

my sense of adventure will not allow me to give up too easily but I am leaning that way. If I could get $50 for it, I could buy one in working condition and I would still be coming out ahead (I paid $130 but my wife would smack me if I tried to send back her new headphones). The only thing that gives me pause is that it is in such awesome physical condition.
I have the pry tool and other stuff I need to pull it apart so I may just see if a cable is loose. I mean, if it were a big computer, I would be checking all the power connections especially since the guy said it just died. That said, I realize that he may have fried the board somehow. I haven't tried the powermat but I am wondering if it is screwed up. I also wonder about the loose usb jack. He may have tried to jam a different kind of adapter into it.

I just tried another power cable and there connector is definitely loose. Maybe this guy dropped it even though he specifically said he didn't.

Oh just thought I would add. The Micro USB port is sodered directly to the mainboard of the HD2. So unless you are very familiar with sodering I do not suggest you try to replace or repair the Micro USB port. It would be simpler to just replace the mainboard, that would solve the USB port problem and the possum le bricked problem all in one. But that might be more money then you want to invest in the device. So as Sam said, don't count out selling it for parts like the screen and digitizer and such.

Ok thanks for the info! I definitively do not have the soldering ability to work on mobile phones. I don't want to mess it up to the point that nobody will even buy it for parts. I could see trying to sell it with solder on the screen or something. I also wonder if it would make a difference because it doesn't even work with a charged battery. I am thinking that the main board is toast but I might open it to see.
I think I saw a mainboard for $50. I think it would be cheaper and less risky to just buy one in working condition.

nah i got the same bricked eu hd2 phone but what do you think? Service recognize the magdrl and android os?

Related

Blackstone totally death

Hello,
I've been flashing my Blackstone since I bought it a year ago, used many different ROMs, TASK 29, latest ROM I used was MaryOne - Build 23568 - WWE [300410]. There were some minor problems but otherwise it was working good till today.
In the morning, phone was connected to USB for activesync and suddenly died, it doesn't want to turn on, not even a diode turns on when I plug in the usb cable to show that it is charging, anybody could give some help? It is in warranty but I'm not sure, what they will say if they'll get in and see cookend rom in it any solution how to avoid it?
Same problem here. Has been flashing Energy ROM for the last couple of weeks but I dont think it is a software issue.
Prior to the present state of totally dead (ie. no LED light when charger is connected, cannot power on, pressing ON switch will not power/turn on phone neither can I hard reset), the phone behaved strangely by resetting itself during video play and phone switched off by itself.
I suspect it a hardware issue. If so, which parts and where can I purchase it without going thro HTC authorised dealer to pay a ransom! Or its time to dump the phone and upgrade? - HELP!, any suggestion?
I have no idea what you could do, but if you decide to
upgrade, please contact me. I would buy the broken phone
because I need a tiny metal part from it, as you can read in my other thread.
surfwarrior said:
Same problem here. Has been flashing Energy ROM for the last couple of weeks but I dont think it is a software issue.
Prior to the present state of totally dead (ie. no LED light when charger is connected, cannot power on, pressing ON switch will not power/turn on phone neither can I hard reset), the phone behaved strangely by resetting itself during video play and phone switched off by itself.
I suspect it a hardware issue. If so, which parts and where can I purchase it without going thro HTC authorised dealer to pay a ransom! Or its time to dump the phone and upgrade? - HELP!, any suggestion?
Click to expand...
Click to collapse
I had the same problem a couple of weeks ago.
I sent the phone to htc and they changed the motherboard. This took alltogether about 4 weeks.
bgumble,
Thanks for your input. I could only find motherboard flex cable online : http://www.globaldirectparts.com//ProductDetails.asp?ProductCode=HTC730080&Click=1710
Maybe you can tell if the motherboard also house the flash ROM? If that is the case I guess the motherboard is only available via HTC service centre! or purchase a faulty unit from ebay with a working motherboard.
Yes the motherboard houses the rom.
the only other major pcb (print circuit board) is the top flex pcb which AFAIK doesn't house any of the flash storage or any other major chips.
if you want to DIY repair, you can use the service manual and I have some tips/advice in the bottom link in my sig, even tho its to change the screen, you can omit a few steps and use it to change the mobo if you're confident doing such a repair.
IIRC: mobo houses the cpu, ram, flash, various transistors and i/o rails, the usb socket, radio nand, coax rails. it also is connected to the wifi/gps/bt/sd/sim pcb, but they are seperatable.
Thank you for you info, qwertylesh.
Having replaced the LCD for TYTN II and checked the service manual and video to dis-assemble HD I think I can manage. But the only problem is getting the spare part, motherboard!. I am hoping to bid for a faulty HD but with a working motherboard on ebay.
I tried placing my dead HD, well wrapped in plastic bag, in the freezer for 2 hrs and then out in room temperature for an hour. Replaced battery but same results - will not power on.
With the charger plugged in, there is no LED lights but testing the terminals which comes into contact with the battery terminals there is voltage (4.19v), meaning - it is charging the battery but the motherboard fails to bootup!
Would it be possible to fix the motherboard? - a long shot!!!!
depends on what is exactly causing it to not boot up I think.
weather its a problem with the flex PCB or the ribbon + power button PCB at the top of your mobile or weather it is actually the motherboard at the bottom.
My HD was dead during upgrade
My Phone was dead during upgrade can anybody help me?
I found a way to repair using JTAG method but unfortunately i stuck up unavailability of JTAG pin outs.
Touch HD Mainboard
I too am in need of a new main board. I packed up my touch HD and transported it in it's original box 150 miles couple of week before I powered it up again and the phone starts, responds to volume up/down and connects via active sync. Basically it all works apart from the screen, no back light and can't see anything on the screen. The phone will charged the battery but there's no light on the power button. I've opened the phone up and disconnected the flex PCB and the connection between the main board and the screen but still have the fault.
Has anyone managed to get hold of one?

Bricked Nexus One?

My Nexus One will not charge at all and when I try to plug it into the computer it is not being recognized. The phone itself works but it's running low on power. The last thing I did was flash to CM 6.0.0-RC2 and it worked fine last night and all day today up until a few hours ago. Is there a stock ROM or anything I can do to re-flash the radio and image to see if that helps? Please help ASAP, thanks.
GrandMstrBud said:
My Nexus One will not charge at all and when I try to plug it into the computer it is not being recognized. The phone itself works but it's running low on power. The last thing I did was flash to CM 6.0.0-RC2 and it worked fine last night and all day today up until a few hours ago. Is there a stock ROM or anything I can do to re-flash the radio and image to see if that helps? Please help ASAP, thanks.
Click to expand...
Click to collapse
Are you sure you didn't mess up the USB port in the device itself?
Wipe and go back to CM5.08
Wipe and go back to full stock. If it still has a problem its a hardware fault and you should try to use the waranty. Flashing 5.08 or any other custom rom will still leave u in doubt it may be the ROM. Also when/if you do send it back for waranty it'll look alot better if you have stock on it - even if the bootloader is unlocked.
I don't think it will be covered under warranty if the bootloader is unlocked. I was able to put the battery in another one and charge it long enough to put it back to stock. I believe my only option would be to send it back and pay for the repair or buy a dock and charge it that way. Can someone point me to the correct stock ROM just in case I didn't do the right one? I'll have to find a way to charge it up before doing so. I'm open to other suggestions also if anyone has any. It just really sucks that I may have to pay for it because this clearly seems like a hardware problem. It's weird when plugging it into a computer a message will come up about not enough power so the computer is somewhat recognizing it but I can't do anything with it.
Can't you just use wall charger?
I've tried a wall charger, the car charger, and USB and neither of them charge. The computer recognizes it or at least see's some device but I get a message about low power on a USB port.
Have you tried this?
http://forum.xda-developers.com/showthread.php?t=614850
GrandMstrBud said:
I've tried a wall charger, the car charger, and USB and neither of them charge. The computer recognizes it or at least see's some device but I get a message about low power on a USB port.
Click to expand...
Click to collapse
This makes me think that you have an electrical problem. If it is pulling down the voltage on your PC there could be a short in the micro-USB port or something else wrong with the charging system.
A dock would be a good test to see if it is actually the port or something deeper. Watch to see if it heats up too much when charging (it will heat up to some degree but it could get seriously hot if there is an issue).
The phone does not get warm at all when plugged into either a charger or USB port. And @cue_32 I have downloading the original shipping ROM but I have my battery charging in someone else's phone before I can put it back to factory. I have a few things I want to try and see if I can get this thing to come back to life. I don't know anyone that has a dock so I can't really test that part out.
Sounds like the connection of one of the power pins on USB port is broken. That would also result in the phone not being recognized, since without having VBUS it won't detect USB attach and won't start the connection.
I suggest returning the phone for a warranty repair, unless you want a phone without functional USB.
That's what I'm going to do is send it in. It sounds more of a hardware issue and should not have been caused by rooting the phone. I have never overclocked the phone and the only 2 programs I installed that required root access was Wireless Tether and ROM Manager. So hopefully the repair goes well and next time hopefully I can root without unlocking the bootloader. I really don't need root but it's nice to have ROM manager and CynogenMod installed.
Well it appears that the charging port is bad and they want to charge me almost 200 dollars. Apparently this is not covered because it is customer induced damage. I guess I wasn't allowed to plug it in to charge it and sync it. I don’t understand this because it was never dropped or anything. HTC used to be very good but now they are getting worse in my opinion. I had a HTC Dash 3G that the microphone didn't work good and they told me it was opened so they could not cover it when I didn't open it up at all.
Anyone want a Nexus One that doesn't charge? It should charge in a dock but I'm not 100% sure. HTC can kiss all of my business goodbye after all this. Time to go with a motorola or samsung android phone.
If you try to escalate your claim with HTC, I think they might be persuaded to fix your phone for free. Sometimes the lower level guys are pretty stingy, but some of the managers are more likely to hook you up.
irishrally said:
If you try to escalate your claim with HTC, I think they might be persuaded to fix your phone for free. Sometimes the lower level guys are pretty stingy, but some of the managers are more likely to hook you up.
Click to expand...
Click to collapse
I have talked to 2 supervisors and that got me no where. In fact if I didn't call them every other day I have a feeling I'd still be waiting. When I had an iPhone I had a replacement the next day but now it's just over 3 weeks and I am still without my phone. I went ahead and had them charge my CC and I'll just dispute the charge and ask for pictures. I am always careful with my phones and have never had one break like this. This whole thing is just frustrating. I'm tempted on returning my wifes HTC EVO and getting the Samsung moment or Epic.

[Q][Updated]Bought A Used A500 With Some Problems, Need help trouble shooting!

Well someone on craigslist is selling an A500 for $80, the only issues with it is the screen intermittently does not respond to touch and it wont charge over 12%. Doing a quick google search both of these problems might be easily fixable. So my question is, is it worth the $80 and if any one has any suggestions to try to fix those two problems. Thanks.
EDIT: Upon talking to them they said the charger cable has to be held at an angle to charge, so that could just be the cable or possibly the jack. I guessing it still doesnt charge past 12%.
Might have talked him down to $50 now, which makes the deal a little sweater if I can fix it for nothing!
I went ahead and bought it and looked at it for awhile lastnight but havent figure out whats going on but these are the problems its having.
1. It will not charge, if you plug it in it says the battery is 12 percent, if you remove the power cable it turns off.
2. Touch screen unresponsive at lockscreen, tried a factory reset it just sits there on the screen that says android system in the top left corner and you can see the back/home/wifi/power icons at the bottom of the screen.
3. The power cable fits very loose in the jack, I popped it open, lifted the jack out from where it sits and plugged it back in. It works just fine until you wiggle the power cable inside of the jack, at that point the device will shut off and if you keep moving the cable you can hear what sounds like a possible short, but only if you wiggle the cable inside of the jack. Somewhere over on the left side of the device you can hear little pops or kind of sounds like paper being crumpled.
I feel like maybe all of the problems are releated to the power issue. I have yet to get another power cable but I think thats where I will start and go from there (Just because I feel like it should not be sooo loose inside of the jack). If any one else has any suggestions I would love to hear them!
brock029 said:
I went ahead and bought it and looked at it for awhile lastnight but havent figure out whats going on but these are the problems its having.
1. It will not charge, if you plug it in it says the battery is 12 percent, if you remove the power cable it turns off.
2. Touch screen unresponsive at lockscreen, tried a factory reset it just sits there on the screen that says android system in the top left corner and you can see the back/home/wifi/power icons at the bottom of the screen.
3. The power cable fits very loose in the jack, I popped it open, lifted the jack out from where it sits and plugged it back in. It works just fine until you wiggle the power cable inside of the jack, at that point the device will shut off and if you keep moving the cable you can hear what sounds like a possible short, but only if you wiggle the cable inside of the jack. Somewhere over on the left side of the device you can hear little pops or kind of sounds like paper being crumpled.
I feel like maybe all of the problems are releated to the power issue. I have yet to get another power cable but I think thats where I will start and go from there (Just because I feel like it should not be sooo loose inside of the jack). If any one else has any suggestions I would love to hear them!
Click to expand...
Click to collapse
A good universal charger is a good start. At least you rule that issue out.
Checking (visable) around the input jack will rule out anything else.
As far as 12%, I would say, EC PWR control. It's quite possible he fubarred the pwr ctrl with some really bad flashes. It happens. This would explain the unresponsivness at the screen.
A good flashing with a stock 3.0x rom might shake some life into it. Might have to do it a few times. Or even a 3.1 or 2x rom.
MD
Moscow Desire said:
A good universal charger is a good start. At least you rule that issue out.
Checking (visable) around the input jack will rule out anything else.
As far as 12%, I would say, EC PWR control. It's quite possible he fubarred the pwr ctrl with some really bad flashes. It happens. This would explain the unresponsivness at the screen.
A good flashing with a stock 3.0x rom might shake some life into it. Might have to do it a few times. Or even a 3.1 or 2x rom.
MD
Click to expand...
Click to collapse
Ill try flashing it once I get home, it doesnt have CWM or anything on it so I am assuming I can do that through the stock recovery? and would this ICS one fix my problems? http://forum.xda-developers.com/showthread.php?t=1624908
And there doesnt seem to be anything wrong with the jack, but I don't get how the power cable would be too small for it. Its really loose, you barely move and it just slide out.
EDIT: Well you were right I follow this How to unbrick your tablet!!!!!!!!!!!!! - xda-developers got everything working fine except the power cable having to sit at the right angle to charge, but it did charge past 12%, now im off to get a new cable.
brock029 said:
EDIT: Well you were right I follow this How to unbrick your tablet!!!!!!!!!!!!! - xda-developers got everything working fine except the power cable having to sit at the right angle to charge, but it did charge past 12%, now im off to get a new cable.
Click to expand...
Click to collapse
Great! You got a bargain of a tablet! Just needed a full rom flash with EC.
As with the charging port, I've heard of some others with the same issue, but be advised, you could break it for good if you go messing with it too much. I would guess the "prong" that sticks out a little on the side of the jack, got flattened in somehow. (I have a TV that mother in law did the same thing to). Now the jack has to be taped to the side to get proper contact.
THEN AGAIN if you have a soldering iron you could remove the port , find another at radio shack ,and re insert>solder the new port and now you have a new tablet for 50 bucks ,I had to do that for my Windows Phone 7 Samsung Focus phone , never had a problem since (that was for a usb port, the power port shouldnt be any different)
Vintage144 said:
THEN AGAIN if you have a soldering iron you could remove the port , find another at radio shack ,and re insert>solder the new port and now you have a new tablet for 50 bucks ,I had to do that for my Windows Phone 7 Samsung Focus phone , never had a problem since (that was for a usb port, the power port shouldnt be any different)
Click to expand...
Click to collapse
Ill have to see if I can find the same port and just remove the wiring from it. If not I found the whole part for $25 online.
Sent from my R800i using Tapatalk 2

General information on a NO POWER on situation!

The HTC One (m7) was a incredibly designed device, with one problem repair-ability.
Some back story I created a 5v OTG charge out of cardboard, washers, and a hacked up USB - mUSB cord.
Worked great when I tested it, used rechargeable AA batteries. Well stupidly i crossed the negative and positive wires by accident. The phone instantly powered off. But no smell of smoke or burning. Would not power on and no charge light. Button reset would not work. Completely dead, or so you think!
This could be substituted with a nice power surge in normal circumstances, but I'll continue.
So I took a chance, disassembled the phone and disconnected that battery, low and behold it came back to life.
So there is very good circuit protection built into this phone. So as general advice, if you run it a situation where your out of warranty and your phone wont power on try disconnecting the battery before chucking it for a new one.
Only problem is they are so hard to get apart I shattered the LCD, touch part was ok though which is kinda funny. Anyways I got a whole new shell and screen assembly coming and I'm gonna modify the tabs so its easier to access the inside of the phone should the need ever arise again.
yeah, great tip, lets all smash our screens to reset the battery..
How about not rigging up a dodgy charging option and use it normally and safely, would be much less costly...
I think the story is interesting and adds knowledge to the forum. I wouldn't take it as a advice, but it does let you know that even when it seems that your phone has been killed by a hardware issue, it can still come back to life. Maybe if he had left it unplugged for some time it would eventually had worked without intervention.
twerg said:
yeah, great tip, lets all smash our screens to reset the battery..
How about not rigging up a dodgy charging option and use it normally and safely, would be much less costly...
Click to expand...
Click to collapse
I'm pretty sure the tip wasn't "let's all smash our screens to reset the battery".. it was more along the lines of "you may not be dead in the water if you don't get any reaction from the power button". I think if he were to write a tutorial, "Smash the screen" wouldn't be a step...
homeslice976 said:
I'm pretty sure the tip wasn't "let's all smash our screens to reset the battery".. it was more along the lines of "you may not be dead in the water if you don't get any reaction from the power button". I think if he were to write a tutorial, "Smash the screen" wouldn't be a step...
Click to expand...
Click to collapse
My point is that he attempted to fix it himself, knowing it is a hard phone to open.
By doing so he shattered the screen.. this will happen to others so why follow the suggestion.
Would have been avoided if he did not make a dodgy peripheral and instead used known safe charging options..
I would send it in for repair instead of attempting an unknown fix.. Each to their own
i crossed the negative and positive wires by accident too and the phone wos death ,i do nothing ,after half hour power get back and phone turn on normally and work like nothing happend

Galaxy s5 won’t boot up

Please can someone help me with a problem I’m having with my Samsung Galaxy s5.
I put my phone on charge before I went to bed and when I woke up it was still showing a red LED. I knew this was wrong because it should have had enough time to charge and turn green. I had not powered the phone off before putting it on charge and I plugged it into the same USB 3.0 charging lead I have been using for the past six months. I unplugged the phone and pressed the power button to light up the lock screen but it didn’t light up.
I’m thinking possibly something has either shorted or over heated and fried something either on the charging port assembly or one of the chips adjacent to the port while the charger was plugged in. It seems like only a trickle of power is getting through to the phone. When I plug a different USB 2 charging cable into the phone, without trying to power on, the charging icon appears but shows no charge at all in the battery.
I have also tried the spare battery I have but it’s still the same. I know the spare battery is 100% fully charged because I store it in a separate charging/storage box which shows a green LED when it is full. In fact the one which was in the phone at the time is also fully charged according to the charging box. Neither battery has got warm at all inside the phone. I’m confident both batteries are fully charged and totally fine and the problem isn’t with the batteries.
At this point I removed my sim card and also the MicroSD card. I needed the sim to use in my spare phone and I wanted to see if the sd card could be causing the issue but after again trying a normal reboot it made no difference.
I’ve tried several possible things I found on google but nothing has worked. Between each different thing I tried I had to remove the battery for 10 seconds and insert it again to get it out of the boot loop so I could try something else.
Initially when I tried booting into safe mode, then recovery mode and then download mode it brought up the screens for those but in each case after a few seconds the phone powered off and went into a boot loop so I couldn’t attempt any recovery options such as clearing cache etc. Now I cannot even get it to start any of those modes at all and all that happens is the phone does a little vibration, displays the Samsung logo and then just boot loops no matter what I try.
I have tried removing the battery and leaving the phone for a few hours then powering on again but it still just loops.
I have tried pressing and holding Vol-down when plugging it into my PC using a different USB 2 cable and windows acknowledged a phone was plugged in but said it couldn’t connect or recognise the phone and suggested the phone could have a fault.
I don't know if maybe my USB 3.0 lead has a fault that could have caused it or if there could have been some electricity spike while the phone was plugged in, or as I said a component has just fried.
I strongly suspect this is a hardware fault and not a software fault but as I’m not a phone engineer I have no idea about how to trace any possible hardware issues or what might have gone wrong. I would really appreciate any help or suggestions about what the problem might be as this has been a great phone for the last 2 years since I got it and I’d be sad to have to junk it and buy a new one.
Thank you.
I would not junk it yet......
You had mentioned that you go through a lot, just to get phone into Recovery ( " Initially when I tried booting into safe mode, then recovery mode and then download mode it brought up the screens for those but in each case after a few seconds the phone powered off and went into a boot loop so I couldn’t attempt any recovery options such as clearing cache etc. Now I cannot even get it to start any of those modes at all and all that happens is the phone does a little vibration, displays the Samsung logo and then just boot loops no matter what I try." )
OK, just my 2 cents here on this... Why not trying to goto Recovery by pressing and holding the Volume Down (vol-); Home button, and The Power button all at the same time. (yes, if you have a Recovery, and its works, you should be able to boot right into Recovery- >Now, (I would, cause I've been there..) I would also have a PC going with Odin open (Plus the Latest Stock Rom) ... If it works, you would flash the Stock ROM, to clean up anything, giving you all stock, but you can change that of course ...then go from there...
Second, if you can not still get to Recovery.... Have you tried a Stock USB Cable, only asking.... Obliviously something is a miss... with Power... IF phone is off, and you plug it to a power source ... then system has power, and these can power up with just the usb cable, without having the battery in..... Been there. Can add the simple fact, if using just a Micro SD cable, they can bend the Power Board. Believe me (Had to fix the Wife's S5 a few Frinkin' times....) That is why, I say using the Stock Cable, or even a USB 3.0 Cable (like the stock one) does help with power issues when the Micro has bent up the power board...
Will check back and see if this may have you to Recovery or fixed... sure hope this can help you out
Thanks for replying godofsalt.
At the time the phone was plugged in to my USB 3 lead which charges faster and all I can think is that perhaps there could be a fault with the lead or the higher ampage of using this lead caused a circuit to burn out.
I have around a dozen USB 2 leads and I've tried your idea with 3 different ones but none of them will fire up the phone at all with the battery taken out.
I am sure this is going to need some kind of replacement either of the charging port or the motherboard. I don't rate my chances of trying to do it myself and I don't think it will be economic to take it to a shop so I've found a better option by buying the same phone which is second hand but in good condition. That way I know I have all the additional accessories already for probably the same price any shop would charge to fix it.
In future I'll stick to using a decent USB 2 lead on the 1 amp charger I used to use before and hopefully this will not occur again.
G500F battery graphic/boot loop
Had the same problem a few days after installing a 9.0 Rom. My battery is brand new and all cables aren't too aged, so I thought this had to be a physical fault of some kind, but then I had the thought to flash an older bootloader and just like that my battery started taking a charge again and I could boot up. Switched to Flyme os for a while the went back to 9.0 again, with the lastest bootloader and the thing stopped working again. Don't know too much, but I'd try and flash a different bootloader to see if there's any difference. My device failed right at the Galaxy logo, then looped the charging graphic endlessly but would strangely go into download mode and not fail. Don't know if this helps, just thought I'd share my solution.
Thanks for replying henderia93.
My symptoms are very slightly different in that the phone couldn't maintain any of the modes I tried for more than a few seconds before going back to the boot loop again so there was no chance of trying any software fixes including flashing the ROM. Now it won't enter any of those modes at all. I'm certain that's due to only a trickle of power getting through to the main board, not enough to maintain any recovery modes, so there is just enough power for it to attempt to boot, but no more so it just keeps looping, most likely caused by something that has blown while on charge.
MarylinC said:
Thanks for replying henderia93.
My symptoms are very slightly different in that the phone couldn't maintain any of the modes I tried for more than a few seconds before going back to the boot loop again so there was no chance of trying any software fixes including flashing the ROM. Now it won't enter any of those modes at all. I'm certain that's due to only a trickle of power getting through to the main board, not enough to maintain any recovery modes, so there is just enough power for it to attempt to boot, but no more so it just keeps looping, most likely caused by something that has blown while on charge.
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Click to collapse
I ha e taken so many of these a part... Like I may have mentioned, there is a Board, just for the USB (data and power (i still have 2 of them)).... In short, you really have to pretty much take the phone a part. Being very careful with the Screen, and the "Sticky" LEDs and the Home button. There is a lot to it actually.
Like I said, been there done that... Cheap to get, takes some time but it is possible to replace that board. It's a separate board different from the actual main CPU board.
I would have to find it, but I had a manual, for taking these a part.
godofsalt said:
I ha e taken so many of these a part... Like I may have mentioned, there is a Board, just for the USB (data and power (i still have 2 of them)).... In short, you really have to pretty much take the phone a part. Being very careful with the Screen, and the "Sticky" LEDs and the Home button. There is a lot to it actually.
Like I said, been there done that... Cheap to get, takes some time but it is possible to replace that board. It's a separate board different from the actual main CPU board.
I would have to find it, but I had a manual, for taking these a part.
Click to expand...
Click to collapse
While I've been looking for answers about this I've seen teardown videos for the s5 so I can see what the port assembly looks like with it's little PCB behind it. As I have a replacement s5 on it's way all I need to decide now is whether to keep the old handset for spare parts or see if I can follow the teardown video to try and install a new port assembly to get the phone working again as a spare.
MarylinC said:
While I've been looking for answers about this I've seen teardown videos for the s5 so I can see what the port assembly looks like with it's little PCB behind it. As I have a replacement s5 on it's way all I need to decide now is whether to keep the old handset for spare parts or see if I can follow the teardown video to try and install a new port assembly to get the phone working again as a spare.
Click to expand...
Click to collapse
Yep, me too, seen many vids on the tear down. I decided to go a bit more, IMHO, to have an actual manual, PDF, when I did my first one, many years ago. So, can read, and use photos wisely. Seen too many Utube crap, where the break it, destroy it..... crazy!
Well, at this age, not too sure what to do my self. In our case, our present service is cheaper to Keep these. Grandfathered in, and we pay a but less, than going to any other carrier. Plus, these newer phones are not cheap at all.
True, it up to you. hope all goes well.
Sorry I am a novice so please excuse my question.
Are you assuming that the usb port is shorting even when no usb cable is inserted? As you put a fully charged battery in with no change it would seem that the act of charging is not involved.
Have you tried a voltmeter to check the voltage at the battery charging pins?
Have you tried to check the voltage at the two pins commonly used for a wireless charging adapter (to the upper left of the battery) to see what the voltage is?
Sorry if I am off base.

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