Hello everybody,
does anybody here see a connection between missing volume buttons(physical switches on the camera module 04w2155) and the tablet doesn't start?
As backgrund info.
Tablet is doing only short vibration when trying to power on, or when connecting to charger. When connecting charger led on the back is flashing but i don't get anything on the display or other feedback except the short vibration. I suspect also some damage with the screen, but cannot confirm. Tablet has a repair of the power button.
Thank you
You might be in APX mode, which doesn't activate the display.
Press the battery-disconnect button inside the tiny hole next to sim card slot and then try to power up your tablet.
Thanks for reply/hint.
What reset did is that for around half a minute the red led was lightning continuously, not blinking. After thag blinks again.
After research about apx mode i'm more and more certain this is my situation, it's active now.
If i connect to computer, it does recognize,search for driver and then disconnects within few seconds.
Since i see this more like a software problem could i stabilise the connection to the computer and recover informations/make backup and restore rom?
Thank you!
Sent from my GT-I9000 using xda app-developers app
We are making progress!
My guess - not to answer your latest question but to the original one, is that your missing volume buttons (physically missing, yes?) very much have something to do with the tablet's current condition. To get to APX mode, the tablet must be started from cold boot with power AND volume pressed at same time (physically pressed). If your missing buttons are registering as being 'pressed' all of the time, it may be difficult to create a boot situation where you can get to your android desktop.
Could you elaborate on the missing buttons?
Please someone else chime in here - I don't even have my tablet.
Thanks for reply.doesn't matter for which question. I put together any information. Issue is getting clearer.
I got the tablet in this condition and attempt repair. Power button was down so i soldered back.
Now the thing is somebody worked before in this area and i suppose the actual powerbutton is one of the volume buttons since the work done before doesnt look professional. I suppose they destroyed the powerbutton and desoldered a volume button to resolder as powerbutton. Which possibly is the case for both volume switches. Now the two vol buttons are nowhere.
The switch has 3 pins,of which the ones at the sides have continuity when the switch is unpressed.
I suppose for boot it could require that the 2 volume switches to be present, that means it could have some continuity check through the switches, and if they are not present it cannot start.
I cannot simulate the 2 buttons because for one switch the soldering pad on the board got burned.
I am going to upload pictures in 5-6 hours when i get home.
If this proves to be somehow true i would order another brand new camera module with all 3 switches, but now i'm unsure if with new board it could start, at least for flashing/recovery.
But having it vibrating and red light flashinv i see a sign it's not yet a "unrecoverable brick"
What do you think?
Thank you
Sent from my GT-I9000 using xda app-developers app
Here a photo of the damaged board
Any answer on the topic appreciated.
Thanks
Sent from my GT-I9000 using xda app-developers app
Anybody any idea about this case?
Sent from my GT-I9000 using xda app-developers app
I think it is definetely a screen damage, maybe a conection cord. Try to clean/replug this cord (cant remember now where it is). This short vibration indicates, that device is begining to boot. Right after vibration Lenovo logo should apear on the screen. If it doesnt - screen is down...
About power board - no connection between power and volume buttons for sure. Power button: + is central, - is other two.
stas.green brings up a good point. If you have opened up the tablet, it is very easy to disconnect the flat ribbon cable that runs the display. When I installed my 3G card the same thing happened to me. Freaked me out but it took 30 seconds to open it back up and correctly seat the cable.
pwstein said:
stas.green brings up a good point. If you have opened up the tablet, it is very easy to disconnect the flat ribbon cable that runs the display. When I installed my 3G card the same thing happened to me. Freaked me out but it took 30 seconds to open it back up and correctly seat the cable.
Click to expand...
Click to collapse
stas.green you're right. the problem is with the screen. i powered the tablet and conected to the computer. i could see the memory access the files and make a backup.
i'm going to examine where is the screen problem origin and possibly to fix it. the screen cables i checked, they fit good. any other weak point known to you?
thanks for help
My next suggestion, not to fix the screen, but to get some function back - connect the tablet to a TV via the mini-HDMI port and see if you are booting to a normal desktop. Hopefully 'External Display' is already enabled. At least you would be able to test if the touch and pen functions of your screen and confirm if they still work even though your backlighting may be broken. Shining a flashlight at an angle on the screen may make the desktop visible if the backlighting is the issue.
Good luck!
Related
Hey all, I'm new to the forums but I can't wait to get my 8125 working. I bought a replacement screen on ebay and a broken 8125.. on receipt all I got was a white screen, then last night I replaced with the new screen and got the cingular logo and the windows mobile "touch anywhere to set up.." message.
Well, touching it did nothing, and the keyboard didn't work, so i opened it up again.
Somehow when I opened it up, the power switch button circuit thing detached from the mainboard (and it looks like the owner before me had actually crazy glued it on!!) .. and now the thing won't power up, won't show a charge light... nothing at all when plugged in or attached to my PC. So I hope that detached power button is the culprit. Upon further inspection I saw that yet another had detached but I can't seem to find where it landed... this one for the little button next to the slider, I don't really know what it does yet.. .
.. so I guess first step is to solder that power button back on and see what happens. Does it sound like a missing power button circuit thing would cause the unit to no longer power on at all (even when soft reset when connected to PC, which used to power it on?)
Pete
i did this. it is hell to solder on. I would say replace the phone
thacmonster said:
i did this. it is hell to solder on. I would say replace the phone
Click to expand...
Click to collapse
Argh.. well, i'll give it a go with the power switch.... do you think it will affect the phone to be missing the comm manager switch off the mainboard too... or will the phone still function without this piece soldered on?
peteclark3 said:
Hey all, I'm new to the forums but I can't wait to get my 8125 working. I bought a replacement screen on ebay and a broken 8125.. on receipt all I got was a white screen, then last night I replaced with the new screen and got the cingular logo and the windows mobile "touch anywhere to set up.." message.
Well, touching it did nothing, and the keyboard didn't work, so i opened it up again.
Somehow when I opened it up, the power switch button circuit thing detached from the mainboard (and it looks like the owner before me had actually crazy glued it on!!) .. and now the thing won't power up, won't show a charge light... nothing at all when plugged in or attached to my PC. So I hope that detached power button is the culprit. Upon further inspection I saw that yet another had detached but I can't seem to find where it landed... this one for the little button next to the slider, I don't really know what it does yet.. .
.. so I guess first step is to solder that power button back on and see what happens. Does it sound like a missing power button circuit thing would cause the unit to no longer power on at all (even when soft reset when connected to PC, which used to power it on?)
Pete
Click to expand...
Click to collapse
Yes, the power on/off button being broken is the reason why you had a white screen, and only getting the splash screen after replacing the touch screen. If you're a good assembly man, I'd suggest try to solder the button back ln place or replace the device. As for the button by the volume slider, that's the comm manager button. If you can ever get to the homescreen, the comm manager icon to activate the comm manager (bluetooth, WiFi, etc. is in the system tray at the bottom of the homescreen.
It sounds to me the new screen was replaced improperly, accounting for nothing happening when you tap it.Try re-installing the replacement screen.
8125
2.25.11.1
Hello there guys!
Recently my M2 power button stopped working, there is no click whatsoever. I checked it up and it seems that the small metal piece fell somewhere inside the phone. I found this dissasembly video : http://www.youtube.com/watch?v=BUXSmlwUC9Q
Now here is my question : it looks like while dissasembling you are ripping the phone apart, is there any permanent damage when trying to dissasemble? I could do it by myself, pasting the metal piece inside but I m a bit concerned about damaging the phone.
Thanks
Strange Milestone 2 power button problem
Hi, I have a strange problem in the power button too, but it's very rare (may be rare just for me)
The thing is that the power button suddenly stops working. If i take off the battery and put it again the phone boots without pressing the power button, and it still not working. Then after some time, it suddenly starts working perfect there is no need to press it stronger then normal.
I can't find out any patterns in this behavior. Another strange thing that happens is that sometimes the button works intermittently and delayed. Example: I do a long press of the power button and nothing happen, then the shutdown dialog shows 2 seconds after. And some times (the most) it doesn't
I'm a little bit confused about it, any ideas?
I've new info: i can't get into bootloader mode (the phone turns on but i get a black screen with no text)
Think I am getting the same power button problem now. How did your repair go?
Same problem here now, dunno if its really related to the power button or something
completely different is going to break down soon.
I will try to replace the whole flex cable with the buttons, but shipping needs some weeks.
I have had this phone for over a year and the power button is getting harder to activate. I also have a nook color, when I plug the nook up it powers on. Is there a way to have something similar on the mt4g? Power on through USB or charge. Thanks.
Sent from my HTC Glacier using xda app-developers app
krsboimo0o0o said:
I have had this phone for over a year and the power button is getting harder to activate. I also have a nook color, when I plug the nook up it powers on. Is there a way to have something similar on the mt4g? Power on through USB or charge. Thanks.
Sent from my HTC Glacier using xda app-developers app
Click to expand...
Click to collapse
I dunno if it can with ADB. But what if you hold the volume down and power button to get into bootloader. How is you power button failing, can you get me a picture?
Could it be that your flex cable is getting worn out or just not actuating the power properly (ie. like with a microswitch, eventually the "springiness" of the switch won't properly let the microswitch activate) If you don't get what I mean, like the inside housing of this microswitch; http://upload.wikimedia.org/wikipedia/commons/f/f8/Microswitch.jpg
Based on this post it seems the mobo flex cable is what depressed an internal switch to turn the device/screen on and off. http://forum.xda-developers.com/showthread.php?t=1591388
The last part of your post though, do you mean that you turn off the phone every night and turn it back on the next morning? Does this only happen when the phone is off and it acts normally when turning the screen on and off?
Well problem solved. I flashed the cwm touch 8.5 I think. Anyways it boots up into recovery when plugged in. I can live with that. I will miss 4xt. Thanks again guys n gals.
Sent from my HTC Glacier using xda app-developers app
Forgive me if this sounds ignorant, but is this a common HTC issue? I own a Glacier and an HD7, and I've seen power button issues for both of them.
Well the issue was pressing the power button would do nothing 95% of the time and 5% would turn the device on. So, problem solved with the cwm touch recovery, except it boots in to recovery mode and is touch sensitive. That's good enough for me though. I just need to be careful when turning the device on.
krsboimo0o0o said:
Well the issue was pressing the power button would do nothing 95% of the time and 5% would turn the device on. So, problem solved with the cwm touch recovery, except it boots in to recovery mode and is touch sensitive. That's good enough for me though. I just need to be careful when turning the device on.
Click to expand...
Click to collapse
i have the same issue with my phone...power button is completely broken..,
but i managed to map the search key (hardly use this button) with the power button using the button remapper found here (http://forum.xda-developers.com/showthread.php?t=850464)
For reboot, i just connect it to any power outlet and it turns on into CWM touch recovery...
i can live with it until the next nexus..
krsboimo0o0o said:
I have had this phone for over a year and the power button is getting harder to activate. I also have a nook color, when I plug the nook up it powers on. Is there a way to have something similar on the mt4g? Power on through USB or charge. Thanks.
Sent from my HTC Glacier using xda app-developers app
Click to expand...
Click to collapse
If you feel comfortable opening up the bevel of the phone, you may want to check and see if the pieces of the power switch are still seated properly. I had a similar issue (which I wrote about here) that was entirely due to the pieces of the switch going off-center, making the button less responsive over time and eventually completely useless. The symptom was that the power button seemed to have less and less actuation to it.
Links:
http://forum.xda-developers.com/showthread.php?t=1603616 (Kevininthebox's power button takeapart guide)
My experience with it is at the bottom.
I am attempting to replace my Nexus 7 digitizer and LCD screen with one I purchased from gadgetfix on eBay, and I can't get the replacement screen to power on. Can someone advise me on things I can try to get it working?
I used a guide on Android Authority and understand that there's two ribbon cables that need to be re-connected (one that feeds through the body of the tablet, and one dual-connector that wraps around the side), as well as the power connector.
I can tell that the Nexus does power up when everything is re-assembled and I press the power on button. Plug it into my Mac, and Android File Transfer boots up. I think the digitizer is responding because when I touch the screen, it says stuff like "Welcome" and "English United Kingdom" (I'm guessing this is the Welcome language selection screen).
If I press the power button while it's turned on, it says "Screen off." Also, at one point it said "1:30am ringer 70 percent."
This is my second attempt at this - after returning/replacing the first one, I encountered the same issue. So I'm starting to think it's either my tablet or something I'm doing.
Any ideas? Thanks in advance!
have the same problem here... and many more out there...
bought new screen & digitizer from china phone accessories as recommended from you tube user... specifically requested for 3G model since it seems that different version has different screen...
fixed today, already checked the connection multiple times, but the screen wont show anything... there's power for the screen... is there anyway to workaround it... tried the power + volume button press but still no respond... since there's no respond on this thread for more than a year, it must be very bad issue...
would try to swap screen with my other unit but afraid the worst could happen, both unit wont show anything...
Long story short my S5 got wet and I took it apart, but when I put it back together the volume keys aren't working. I'm not sure If I need to buy the midsection of this phone that houses the volume and power buttons or if I need to buy a new LCD glass. I think I may have cut the ribbon cable on the left side of the LCD screen. See the below image of how the two cables look like they should be connected but are disconnected. Every tear down and pics of this phone show these two cables being connected. Can someone please confirm if I did indeed cut this cable and if it does control the volume up and down buttons? I want to exhaust all my options before I break down and buy the midsection. If I did infact cut the cable then it will be a costly mistake. Any help would be appreciated, thanks
http://i1383.photobucket.com/albums/ah284/Football33Football/IMG_20141017_065806_zps2da597f0.jpeg
Im not sure if you did but for now you can download a volume widget till you can have it looked at
Sent from my SM-G900W8 using XDA Free mobile app
I wish it were that simple as I have another problem with my phone, but in order to fix that problem I need to fix the volume button problem. My phone is stuck in boot loop from getting wet. It's unrooted and I could access the screen to wipe data when the volume buttons worked, but even after trying to wipe data it would still stay in boot loop. Now, If I help the volume down, home, and power button I could access the Downloading screen. This screen will give me hope of reloading a new OS, but I can't get to this screen till I can figure out my volume button issue. I"m hoping some one can shed some light to my question above. Thanks