Problem with digitizer - G2 and Desire Z Q&A, Help & Troubleshooting

Hi All,
I recently started having a problem with my G2. Upon a reboot, I noticed that the digitizer was not working. None of my touch was recognized, not even the home/menu/back/search area. I powered down the G2 and rebooted, and again the same thing. I disconnected the battery, removed the SIM and SD Card, and tried again after a few hours. This time it worked. Rebooted again, no go. Strange, right?
I thought it might be a faulty digitizer, so I replaced it with a new one. Same problem persists.
The weird thing is that I have figured out after about ~25 reboots, it works again. And once the digitizer works on reboot, it works fine until the phone shuts down, so I just keep it on as long as I can. If the battery dies or I have to reboot, then I have to reboot about ~25 times before it works again - then the cycle continues - I keep the phone on as long as I can until it powers down - reboot with the digitizer not working, ~25 reboots later, the digitizer works again. It's freaking annoying.
So, my question is...if the digitizer is not the issue, where could the problem be? I have tried flashing different ROMs, they all exhibit the same issue.
Any help would be appreciated - I really love this phone and don't want to upgrade yet.

First thing that came to mind was the faulty digitizer... But on further ponering, maybe its not the digitizer, but the ribbon cable. Try replacing it. That could be the cause f your issues. Hope i helped.
Sent from my HTC Desire Z using xda premium

The digitizer part included the ribbon cable, so when I replaced the digitizer, I also replaced the cable. It is too weird. If the digitizer or cable was bad, I would expect the digitizer to behave erratically during the times when it does work, but as long as the phone doesn't power off - it works fine!
My suspicion is that it could be some kind of software/firmware fault where...for some reason the digitizer is just not initializing on every boot up. It only initializes once every ~25 boot ups, then works fine until the phone powers off.
I plan on fully restoring the phone to factory stock condition soon, relocking the bootloader and all, then seeing if the problem still persists. If it does, then I'm done with the phone. It's too much of a pain in the butt to keep the phone alive and on for weeks on end just to keep the digitizer working. At times it dies at an inopportune time and then I'm just power cycling it like an idiot hoping that it works again on the next reboot - which it eventually does, but I don't always have the time to reboot the phone endlessly while keeping my fingers crossed.
Thanks for the suggestion though!

Related

Help!!! Hox on its death bed

Hi there
I recently attempted to change the digitizer on my one x, breaking the lcd in the process.
I ordered one from eBay and installed it along with my new digitizer. Both went well and my one x was looking fresh again.
With the housing off still, I wasnt 100% happy with the double sided tape i used so decided to redo the bonding process.
Anyways... Long story short.
My wife accidentally spilled the tiniest bit of water on the surface my phone was on. It did get on the phone but not too much, I broke down the components and put them in a rice bag overnight. now the lcd screen is cloudy (not a problem really, can get another for £20) but the htc logo comes on with a vibration as normal but then after 3 seconds goes off and repeats. Thinking my battery could be drained I've had it on charge for at least half hour with no luck.
I hope this isn't a hardware issue. I can't afford this right now.
Trying to boot into recovery brings up the low battery text too but again reboots after 3 seconds. Ive triple checked all ribbons/cables/connections and everything seems fine.
Any help would be appreciated. Many thanks
Edit: A post on this thread... http://androidforums.com/htc-one-x-xl/635327-help-my-htc-one-x-wont-stop-rebooting.html hints at it possibly being an issue with the powerflex cable attached to the power button. After a few wiggles and playabouts the phone went on to the bootanimation but then rebooted. So its possible it is the cable?! How do i go about changing this and further testing to make sure it is exactly this?
Edit II: Seems to be now the powerflex cable is faulty, as when I disconnect it from the slot, the charge LED now remains constant. I've disconnected everything else. Leaving it to charge for a while then gonna research the power cable. tried connecting the power cable but it just causes it to restart with LED flashing every 3 secs. hence why i know it restarts.
chalmizzle said:
Hi there
I recently attempted to change the digitizer on my one x, breaking the lcd in the process.
I ordered one from eBay and installed it along with my new digitizer. Both went well and my one x was looking fresh again.
With the housing off still, I wasnt 100% happy with the double sided tape i used so decided to redo the bonding process.
Anyways... Long story short.
My wife accidentally spilled the tiniest bit of water on the surface my phone was on. It did get on the phone but not too much, I broke down the components and put them in a rice bag overnight. now the lcd screen is cloudy (not a problem really, can get another for £20) but the htc logo comes on with a vibration as normal but then after 3 seconds goes off and repeats. Thinking my battery could be drained I've had it on charge for at least half hour with no luck.
I hope this isn't a hardware issue. I can't afford this right now.
Trying to boot into recovery brings up the low battery text too but again reboots after 3 seconds. Ive triple checked all ribbons/cables/connections and everything seems fine.
Any help would be appreciated. Many thanks
Edit: A post on this thread... http://androidforums.com/htc-one-x-xl/635327-help-my-htc-one-x-wont-stop-rebooting.html hints at it possibly being an issue with the powerflex cable attached to the power button. After a few wiggles and playabouts the phone went on to the bootanimation but then rebooted. So its possible it is the cable?! How do i go about changing this and further testing to make sure it is exactly this?
Edit II: Seems to be now the powerflex cable is faulty, as when I disconnect it from the slot, the charge LED now remains constant. I've disconnected everything else. Leaving it to charge for a while then gonna research the power cable. tried connecting the power cable but it just causes it to restart with LED flashing every 3 secs. hence why i know it restarts.
Click to expand...
Click to collapse
you should be happy atleast your motherboard is okay now try getting a new power flex cable and check whether your htc still reboots or not with the new one,,,best ov luck :good:
Cheers mate. One is on order from eBay. I ended up removing the power cable because it just interfered with boot ups. It's a bugger having to use sweep to wake and ADB commands but at least it now works
Also no mic for calls but that's OK. Loudspeaker works still
Sent from my ProBam by codexc @xda using xda premium
chalmizzle said:
Cheers mate. One is on order from eBay. I ended up removing the power cable because it just interfered with boot ups. It's a bugger having to use sweep to wake and ADB commands but at least it now works
Also no mic for calls but that's OK. Loudspeaker works still
Sent from my ProBam by codexc @xda using xda premium
Click to expand...
Click to collapse
those are minor parts you can change them well congrats um happy for your reborn HTC ONE X :good::highfive:

Touch Screen stops Functioning randomly?

Hey, I really need some desperate help.
So I have a Canadian Note 2, SGH-I317.
It has no SIM card inside it, and it is just connected to wifi.
I have flashed 2 Custom ROMS before on this phone.
The first one, was a 4.4.2 Homemade t0lte ROM.
It worked fine for about a week, but then I started to have this big problem.
After I plugged in my friends charger at her house, (a Samsung Note tablet charger) then this problem started shortly after I left her house:
When I leave the phone alone, it will go to sleep automatically like every other phone. Then, when I press any button which wakes the phone, the touch screen is unresponsive, and the phone since no input is coming in, goes back to sleep and doesn't turn on again until after a while, where it will boot back on itself and start working until randomly out of chance (chance meaning atleast once every 1 - 4 hours) it will do the same thing again. It's getting really annoying and starting to be destructive, as it stops important conversations and other stuff.
I initially thought it was the homemade ROM.
So, I changed the ROM. Now I'm using a better one, and it's called W03 Slim v9 t0lte, and it's 4.4.2 and works good.
I was not seeing any problems up until a few hours after the install of the new ROM, and the problem which I thought had been removed was still persistent. Now, its even more often than the old homemade ROM. Just before posting this, it has happened twice in the matter of 1 hour, and it's just getting on my final nerve.
I'm not sure if this is a key factor, but after it goes to sleep, I still see the visible white pixels of the 4.4.2 shutoff effect.
My final thoughts are that it might be the battery, but I have no idea how to get a replacement for that, and how much they cost.
Obviously I can't send it in because the warranty was voided when I flashed the custom ROM.
I really need a solution, and ultimately I could wipe everything and go back to the stock ROM, but that, in my scenario would be a last case scenario.
Thanks, Delbert.
NOTE: Just found out that when I turn it on, and the touch screen is unresponsive, the S pen works with the phone, and the back and menu button doesn't work. But, all physical buttons do. The physical home button works, but all the rest except the S pen works. So I can navigate the phone unless it goes into sleep mode, in that case no matter what I press, nothing will make it come up unless it reboots.
AgentTran said:
Hey, I really need some desperate help.
So I have a Canadian Note 2, SGH-I317.
It has no SIM card inside it, and it is just connected to wifi.
I have flashed 2 Custom ROMS before on this phone.
The first one, was a 4.4.2 Homemade t0lte ROM.
It worked fine for about a week, but then I started to have this big problem.
After I plugged in my friends charger at her house, (a Samsung Note tablet charger) then this problem started shortly after I left her house:
When I leave the phone alone, it will go to sleep automatically like every other phone. Then, when I press any button which wakes the phone, the touch screen is unresponsive, and the phone since no input is coming in, goes back to sleep and doesn't turn on again until after a while, where it will boot back on itself and start working until randomly out of chance (chance meaning atleast once every 1 - 4 hours) it will do the same thing again. It's getting really annoying and starting to be destructive, as it stops important conversations and other stuff.
I initially thought it was the homemade ROM.
So, I changed the ROM. Now I'm using a better one, and it's called W03 Slim v9 t0lte, and it's 4.4.2 and works good.
I was not seeing any problems up until a few hours after the install of the new ROM, and the problem which I thought had been removed was still persistent. Now, its even more often than the old homemade ROM. Just before posting this, it has happened twice in the matter of 1 hour, and it's just getting on my final nerve.
I'm not sure if this is a key factor, but after it goes to sleep, I still see the visible white pixels of the 4.4.2 shutoff effect.
My final thoughts are that it might be the battery, but I have no idea how to get a replacement for that, and how much they cost.
Obviously I can't send it in because the warranty was voided when I flashed the custom ROM.
I really need a solution, and ultimately I could wipe everything and go back to the stock ROM, but that, in my scenario would be a last case scenario.
Thanks, Delbert.
NOTE: Just found out that when I turn it on, and the touch screen is unresponsive, the S pen works with the phone, and the back and menu button doesn't work. But, all physical buttons do. The physical home button works, but all the rest except the S pen works. So I can navigate the phone unless it goes into sleep mode, in that case no matter what I press, nothing will make it come up unless it reboots.
Click to expand...
Click to collapse
your friend's charger could've damaged your phone
i've had a charger that made my touchscreen unresponsive while plugged in... thankfully it didn't do any noticeable permanent damage
all USB chargers are not created equally:
http://www.righto.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html
ShadowVlican said:
your friend's charger could've damaged your phone
i've had a charger that made my touchscreen unresponsive while plugged in... thankfully it didn't do any noticeable permanent damage
all USB chargers are not created equally:
Click to expand...
Click to collapse
Thank you for your reply, but if the charger did do damage to my phone, how would it and how does the touchscreen still work with the S pen?
Is there any way to fix this, and if not what do I do?
I have an HTC One X I could use as a backup, but I would like to install a 4.4.2 ROM on it, and with what I've found out I have to root it, which requires a recovery, which recovers an unlock or S-OFF, and when trying to do that, the phone won't connect via USB to my computer. I am frustrated but at the same time sad.
Should I just factory reset my whole phone and erase everything?

Screen Replacement issues

I recently had a buddy get a screen replace from a place in the mall. The phone display and everything works, but one problem after all of that. It will not stay on and keeps bootlooping ect.... I did a factory reset and still no luck another weird thing is, when it is plugged in the battery will go from 80% down to barely nothing then quickly charges back up. The phone somewhat seems to stay on when it is plugged in. The phone started having these problems when the screen was replaced. Im confused. please help! Thanks!
sure its simple
pdubzzle83 said:
I recently had a buddy get a screen replace from a place in the mall. The phone display and everything works, but one problem after all of that. It will not stay on and keeps bootlooping ect.... I did a factory reset and still no luck another weird thing is, when it is plugged in the battery will go from 80% down to barely nothing then quickly charges back up. The phone somewhat seems to stay on when it is plugged in. The phone started having these problems when the screen was replaced. Im confused. please help! Thanks!
Click to expand...
Click to collapse
First thing first do a hard factory reset with the volume down and power button, not work then flash with lg flash tool the model numbers kdz all downloads and guides are posted. let it fully boot power down then fully charge, power up and down several times so the data files understand the new digitizer and resets all problems. Still dont work find screen replacement video via youtube once there whatch how to disassemble cause I am pretty sure it is one of the data cables or connections that is loose but you can never know with software and those are easier to do and less chance of permanent damage.
Or you can mail it to me and I fix her right up lol

Possible broken Power IC? Bricked phone? Assistance needed.

Hi everyone, I am looking to troubleshoot my T-Mobile Galaxy S4 which I believe has suffered from a Power IC malfunction. It has all the symptoms that relate to a broken power button, which of I already sent in for repair and that didn't seem to fix the problem. The guy installed a brand new power button and the problem still persists. Continued researching and it might be a broken Power IC chip.
The phone will power on for a second and display the Samsung logo, then shut off and reboot itself and sometimes be in a constant vibration cycle like it's trying to power on. Sometimes it just freezes on the Samsung logo and will not continue past that. Sometimes if I'm lucky, it will boot up like normal but once it gets to the T-Mobile splash screen, the screen will distort and then reboot itself where it will just go through either of the symptoms already mentioned. Weird thing is, I am still able to boot into recovery (takes a couple tries though) and download mode fine without any reboots or anything. I have tried flashing numerous stock firmwares/ROMs via download mode/recovery in hope maybe that'll correct something, but to no avail.
The problem happened shortly after I accidentally dropped my phone getting out of the car. The phone worked fine for a day and then one day while driving, the phone did something crazy and froze up, displayed the power menu, and then shut off by itself. Then after that is when all the problems happened. I took the phone apart and cleaned the power button. Rubbed the contacts with rubbing alcohol and even tried to get inside the power button with some. Took a can of air and sprayed the button until it was dry. I think that was my mistake because I think some alcohol got onto, or into the power IC located near the power button and fried something.
Looking for possible answers as to what could have caused this. The phone will not charge normally unless I boot into recovery/download mode. Plugging the phone in while powered off displays the charging icon with the grey battery and a circle in the middle but doesn't continue past that and reboots itself after a while. Tried a different battery as well and it's all the same symptoms which is why it's something internally.
On a side note, if anybody has experience with replacing the Power IC and would like to offer their service to me, we can arrange a price and continue from there. Please be a reputable member though. Thanks for reading. Hope to resolve this annoying issue.
If you are able to go into recovery mode, have you maybe considered flashing a new ROM?
Do you have some sort of custom recovery? If yes, maybe you could first back up all your stuff to an SD card (in case nothing helps bring the phone back to life).
Since your boot up logo shows up, but the ROM doesn't seem to start, to me it looks like your onboard flash memory might be the problem, not the power IC. The S4 is actually an awesome phone from a repairability standpoint.
Best of Luck! :good:
I will be starting to do power IC replacements in these phone in a couple weeks actually! I have a little cell repair business that i started a few months ago, but I have never done this specific repair. It isn't difficult, and as soon as I have a few successful attempts under my belt I will update you! Although, usually the phone won't boot at all if it has a bad power IC. I would do more research and see what can cause your specific problem. Feel free to message me or just reply on here with questions
deke997 said:
I will be starting to do power IC replacements in these phone in a couple weeks actually! I have a little cell repair business that i started a few months ago, but I have never done this specific repair. It isn't difficult, and as soon as I have a few successful attempts under my belt I will update you! Although, usually the phone won't boot at all if it has a bad power IC. I would do more research and see what can cause your specific problem. Feel free to message me or just reply on here with questions
Click to expand...
Click to collapse
Hi Deke. Sorry for not replying sooner. Kind of forgot about this thread after giving up on trying to fix it. But if you are willing to repair it in the future please let me know! I'll give you some business for your repair shop. Congrats on starting one too .
As for the phone not powering on at all if the problem was the power IC, that's what I thought at first too. But after getting a new power button installed and the problem still persisted, the power IC was the next option.
Sent from my 6045I using XDA Premium 4 mobile app

Damaged mainboard?

Hi,
a couple of days ago my ASUS ZenFone 2 (Z00AD, ZE551ML, 4 GB RAM, 8 GB ROM, 1.8 GHz) started behaving very erratically on its own. It's not been rooted nor has been the bootloader/recovery modified.
OS version was the latest: WW-4.21.40.352.
Before it all happened, I cracked my screen and replaced it.
The phone worked perfecty (aside from the screen not being original (occasional flicker)) for a week, after which I started to lose signal in the SIM1 slot. It took me 6 weeks to realize, it might've been the antenna cable. I disassembled the phone again and inserted the cable again. It then worked perfectly for a couple of days.
Then it looked like it was damaged by water, which of course was not the case.
It started with continuous vibration and black screen, and only a forced shutdown (by holding the power button for a couple of seconds) helped. Then, it started to restart on its own and lose signal. Then the speaker stopped working, until poking its area. And at last, the phone thouht I have View Flip Cover on and all I could do was to force shutdown.
Then the phone didn't wan't to turn on at all. It didn't even charge and was not being detected by the computer.
I then read, one has to pull the battery cable twice and it did help.
The phone worked fine for a day, until it started going into black screen/constant vibration state, in which only a forced shutdown helped.
I followed a guide to redo hard brick and it's helped for a while, but now the phone constantly goes into black screen/constant vibration state at random, the same hapenning sometimes when charging while turned off or when choosing any option in the stock bootloader. It also doesn't boot completely (the ASUS logo shows up much later) and the WLAN doesn't work.
I followed the unbrick guide correctly. I read up, the mainboard might be corrupt.
What do you suggest? I of course, lost my guarantee the moment I cracked my screen.
Many thanks in advance.
Check the connection of the flex cable on the daughter board. Pretty sure there is loose connection.
itsakjt said:
Check the connection of the flex cable on the daughter board. Pretty sure there is loose connection.
Click to expand...
Click to collapse
Had to shelf my phone for a year because of this. Gotta clean the connector and press the cable in there good.

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