No back lighting, screen still takes touch input - Motorola Photon Q 4G LTE

I'm not sure if anyone is still using this forum, so hopefully someone can help me.
I hit the power button when I was typing on the keyboard the other day. It shut off the screen as expected, there wasn't any rough handling or anything but the screen now won't turn on even at startup. It still registers touch input which seems weird to me.
Although it shouldn't apply, I am running some variation of CM.
I'll try whatever I can for diagnostics.

Well first and foremost I would try to use the two-button key sequence to force turn the device OFF (power + vol down IIRC) - hold those two for ~30 sec. Device should be OFF. Then hold only the power button (~5 sec) and it should turn back ON.
If you are still having issues, you may in fact have a hardware problem.

arrrghhh said:
Well first and foremost I would try to use the two-button key sequence to force turn the device OFF (power + vol down IIRC) - hold those two for ~30 sec. Device should be OFF. Then hold only the power button (~5 sec) and it should turn back ON.
If you are still having issues, you may in fact have a hardware problem.
Click to expand...
Click to collapse
Yeah, I have rebooted before. I gave it another go and still no luck. The first time around I let the battery drain completely, recharged, and started it back up with the issue persisting.
Given that this is likely a hardware problem I would need to buy a torx set to fix it and I'm not sure it's going to be worth it if I end up having to buy parts too.

It would be easier if you backup your device blind and buy another PQ where you restore your backup.
I think the display connector on the motherboard is damaged and not just the ribbon cable. Why I think that? Well, more a guess. I opened my PQ once and noticed that the connector was weird, kind of loose.
But the ribbon cable was a bit damaged (the bit between the display and the main-device). Some tape was enough but I don't think that this was going to be a problem.

...i mean it is backlight IC problem

Related

[Q] Telstra One XL wont turn on after screen replacement

Hi Everyone,
I'm have a problem with my One XL. It's an Australian Telstra item. I got soaked in the rain and the phone got wet. I put it in rice for a few days to soak up the moisture, then charged it up. After this the screen backlight would intermittently fail, and i noticed if I squeezed the LHS of the phone it would sometimes make the screen go on or off. The problem got worse over the space of about an hour and eventually the screen would not come on. I opened up the case, and noticed there was a split in the ribbon cable that is part of the screen at the point that it is folded over 90deg (I'm not sure why this was never a problem before the phone got wet?)
So I stupidly got straight stuck into taking it apart to replace the screen before backing up all my stuff. I ordered a new screen of ebay and replaced the old one. Now I am having the following behaviour:
1-Press and hold power button - Phone vibrates once, then does nothing. Screen doesn't come on.
2-Plug into PC - LED flashes red for a while then goes solid red. Screen doesn't come on. Nothing pops up in "My computer"
3-Press and hold (~10sec) power after 2 - Red light goes off. Phone vibrates once every ~30 seconds. Screen doesn't come on.
4-Press and hold power after 3 - Home/Back/Apps LEDs flash 20 times, no other change.
I also tried a number of combos of power + vol -/+ with no success.
Also, I was being lazy and doing this without putting the case back on, and my power button has fallen apart. It looks like that ribbon cable is only ~$5 on ebay, so no big deal, but means I cant really do anymore troubleshooting at the moment.
So I guess the big question is, can the phone still be salvaged? I'm thinking maybe it's stuck in a boot loop with the screen also not working?
Any help is greatly appreciated.
Cheers,
Chris
The first question I have would be did you make sure you got the right screen? There are three different types of screens that came on this phone and you need to make sure you match it correctly. You can identify the type of screen by the colour of the flex cable attached.
Secondly, you should never use the power + volume up button combination, I'm not sure where you saw that information but it puts the phone into Qualcomm download mode which you definitely don't want. The only button combination that should ever be used is power + volume down.
Sent from my Evita
Hi Timmaaa,
Both screens had the same orange/brown flex cables. I did read that there were different screens, but had thought there were only two and that the other had a green flex, so I definitely didn't get that one. Are the other 2 colours close?
I'm not sure where I read the power + volume up thing as I have read a heap of different threads. What would the expected behaviour be if I had put it into that mode?
Thanks for your help.
Cheers,
Chris
The three different screens have very different colour coding on the flex cable, so matching should be a piece of cake, which I believe you've done correctly. Putting the phone into Qualcomm download mode is kinda like a bricked state, if you're getting the red charging led and the cap button lights flashing I think you're ok.
Another thing to note is that you usually need to sync your new screen when you install it. From memory I believe you need to power the phone on, remove the old screen while the phone is on, and install the new screen while the phone is on. If you didn't follow this process that might be why your display isn't working. Other than that your phone might have just suffered some fatal hardware damage due to the liquid ingress, which isn't going to be fixable.
Sent from my Evita
Thanks again Timmaaa,
I had a closer look at my old screen and it does have the small green section on the flex cable which I didn't notice the first time around. Bugger.
So i disassembled it again and swapped back to the old screen. The display still doesn't turn on, but the phone itself now stays on and the computer recognises it! I'm transferring all my photos across to my computer now, then I'll try to sync it properly and see if that helps.
Cheers,
Chris
Ok so I swapped the screens back and forth with the power on, and now it's working! Thanks Timmaaa, I would never have guessed I needed to have the phone turned on in order to swap parts, seems pretty weird. Now just got to get a new power button.
Cheers,
Chris
Awesome. Glad to be able to help.
Sent from my Evita

Internal Power Button "Stuck"

Hello,
Yesterday my Nexus5 won't turn on when pushing the power button. After plugging it into the Charger it kept on bootlooping at the Google Logo.
When i got home i disconnected the battery and tried again - same issue.
Did some Research after that at and came to the conclusion that my internal power button got somehow "stuck". So i disassembled the phone and tried to pull out the white little power button on the motherboard but it didn't help - the button also doesn't seem to be stuck.
Any one of you with input regarding this Issue? It Phone now randomly boots up for 3-4 Seconds and turns itself off again after that.
Some people on reddit and xda recommened on "smashing" the phone a little bit on the table to unstuck the button but that didn't help either.
thank you
From what I've read the metal piece that the white power button is pushing in is getting stuck, not the actual button itself. I ran into this with my N5 a few weeks ago. People suggested a few fixes: flicking the power button with your finger and storing the phone next to a strong magnet. Not sure how good of an idea the magnet idea is, but the flicking temporarily helped for me, enough to break it from the loop at any rate. Sounds like that didn't really help for you though.
I ended up taking it to a repair shop (out of warranty) and they soldered on a new power switch for ~$60. They didn't seem overly confident it would work, but it's working just fine now.

Bootloop + Power Menu problem

So today i started having bootloops, it was showing the Powered by Android screen for 2 seconds then booting again over and over for few hours
Now after it somehow got fixed by itself, i managed to turn the phone ON and to clear Cache
So far there are not bootloops anymore
BUT
huge BUT
the phone is poping the Power Menu most of the time, and then every touch on the screen just "presses" on the Shut Down option
If i press on the Power button myself it shut him down automatically ...
EDIT:
Would like to add, that i never unlocked it, it's the regular OTA version.
I doubt a wipe wll help, but i really wont mind if thats the case
Its almost like something pressing the Power button sometimes, but even WITHOUT the back case it still pops that power menu. even if no one is touching it at all it still pops it once in a while, which cause shut downs once in a while ...
So i woke up
The phone is off, i cant turn it on
I charge it for few hours already and still nothing happens the power button doesnt do nothing, it doesnt vibrate
So i connect it to my PC, it shows it as a Marshal something in the device manager but it KEEPS disconnecting and reconnecting every 2 seconds
I have found a "fix ur bricked phone" threads but they all using a tool that needs the phone connected to the PC, well my phone cant stay connected more than 5 seconds for some reason [ different cables, different computers] it keeps on popping in and out
Did you drop your phone in the water or something? Wet or damp from the rain maybe?
And did you try connecting it while in fastboot or recovery mode?
Maybe wet from Humidity but thats all
i cant reach fastboot nor recovery
as now it all black, not turning on not even for a bootloop
This problem happen when the phone is getting wet ? its certainly didn't but maybe i should "fix" it as a wet phone should be fixed? should i open it and dry it out? maybe take the battery out? its not that easy to take it out tho
I had a phone which was wet from the rain, it made the power button faulty. It would randomly turn screen on off like in your case. I took it to the repair shop and they cleaned the insides and it was fine again. If you're sure it's not the rain or anything then maybe that's not the reason, just a guess.
How about plugging in the charger? Does it light up? If it lit up and you cant turn it on after maybe its the power button problem.
elemti said:
I had a phone which was wet from the rain, it made the power button faulty. It would randomly turn screen on off like in your case. I took it to the repair shop and they cleaned the insides and it was fine again. If you're sure it's not the rain or anything then maybe that's not the reason, just a guess.
How about plugging in the charger? Does it light up? If it lit up and you cant turn it on after maybe its the power button problem.
Click to expand...
Click to collapse
plugging the charger doesnt do nothing
Although i got a portable charger with a led , the led turns on when i plug the One, BUT, the led bar doesnt decrease even after few hours, so its like "trying" to charge but not charging anything
Try this from OnePlus Customer Support:
2. Power cycle the One by holding the Power button for 20 seconds 5 times.
3. Attempt to start the phone by holding down the Power button along with the Volume down button to start recovery mode and performing a factory reset.
Click to expand...
Click to collapse
or hold Power button with the Volumn up button to see if you can get into fastboot mode.
lol bro... seriously.. you really think i didnt try that stuff before opening a thread?
I already scanned the entire web and no one with the same issue have posted a fix thread
one plus doesnt even care about their customers
Is this the guide you said you saw? http://forum.xda-developers.com/oneplus-one/general/guide-unbrick-oneplus-one-t3013732
Why not give it a try? Follow the steps and see if you are able to unbrick your phone.
I mean there's not much you can do if you can't even turn on your device in the first place :/

32GB-Boot takes long press of power button (10 plus seconds). Is that normal?

Hello XDA,
I've done some searching but I can't find a post like mine. I'm not in need of troubleshooting, just a question:
I've had a Nexus 5 32gb for awhile. It runs just fine, but it's always had a "feature" which I didn't realize was unique to this phone until just the other day:
Turning the phone on sometimes takes a long press of the power button (10 plus seconds). Sometimes I have to do this a couple of times and then it will boot. Booting into recovery is the same way. When powering off the phone, it takes about 15 seconds to power down, almost like it's just down like a computer. It will not restart. While the phone is booted I can long press the power button to restart it, and the phone will turn off but not restart. Also, from the bootloader I can choose restart but the phone won't restart. It just powers down.
I never assumed this was abnormal as this was my first nexus device, but I recently acquired a 16gb Nexus 5 and it does not behave in this fashion. It boots almost instantly and restarts.
So the question is, is that normal for a 32gb device? The phone has a new power button and new battery so pretty sure that's not the cause or contributing. Phone has not been rooted or unlocked.
Any thoughts?
exhumis said:
Hello XDA,
I've done some searching but I can't find a post like mine. I'm not in need of troubleshooting, just a question:
I've had a Nexus 5 32gb for awhile. It runs just fine, but it's always had a "feature" which I didn't realize was unique to this phone until just the other day:
Turning the phone on sometimes takes a long press of the power button (10 plus seconds). Sometimes I have to do this a couple of times and then it will boot. Booting into recovery is the same way. When powering off the phone, it takes about 15 seconds to power down, almost like it's just down like a computer. It will not restart. While the phone is booted I can long press the power button to restart it, and the phone will turn off but not restart. Also, from the bootloader I can choose restart but the phone won't restart. It just powers down.
I never assumed this was abnormal as this was my first nexus device, but I recently acquired a 16gb Nexus 5 and it does not behave in this fashion. It boots almost instantly and restarts.
So the question is, is that normal for a 32gb device? The phone has a new power button and new battery so pretty sure that's not the cause or contributing. Phone has not been rooted or unlocked.
Any thoughts?
Click to expand...
Click to collapse
Hi, that's a good question. My first thought for this problem would be a sticking power button cuz I've had one of those issues before and the phone was stuck in a bootloop because the button was stuck on my 16Gb N5. I would think this may have been the issue but since you have a new power button I wouldn't think it would be.
I recently got another Nexus 5 and this one is 32Gb but when I go to power it up, it starts instantly. So I would imagine that this is either a hardware problem and not something to do with the software. You may have to get it checked out at a phone place if the community can't find anything on this. (That and I've not seen this issue around before)
This is just my thoughts on it, Good luck!
Well I fixed it. I didn't set out to, it just sort of happened.
I disassembled the phone to replace the camera lens and thought what the heck, let's look at the power button. In doing so I noticed that the ring in the trace next to the power button was exposed, and there was only a miniscule amount of solder connecting the trace to the button. I mean hair width amount. I thought that can't be right so I opened up my 16gb and low and behold there was definitely more solder bridging the trace and power button. I thought what the heck and added a tiny bit more solder to the 32gb, completely covering the ring and thickening the solder connection.
SOLVED! Starts right up now, no problem. It even restarts too. I can't explain is but my non engineering theory is that there wasn't enough capacitance for the connection to be completed so the boot and restart processes were retarded. Either way, fixed.
So if anyone else runs into this problem, take a look at the connection. Hope this helps someone.

Device will not power on, no led lights, cannot get into recovery, etc.

Hi All,
I am having a bit of trouble with my Galaxy S6 device. I am unsure if this was the cause of my issue, though yesterday I had dropped my phone from a short distance. When I had picked my phone back up it was powered off and would not turn back on. This is not the first time my device has powered down from a fall, and this is not the first time I had difficulty rebooting my device.
My phone does not appear to be responsive to any attempts, nor does it indicate by LED that it is charging. When I dropped the device, I was just then taking it off the charger as the battery was at full/near full.
I have tried holding the power button, holding the power button and volume buttons, holding the power button and each of the volume buttons on their own, as well as holding the power button, volume down button, and the home button. I have not had any luck with any of these solutions, nor was the device responsive to any of these solutions.
When I plug the phone into its charger, the power brick does appear to be warm, though this may just be wishful thinking on my part. I have tried the power brick that came with the device as well as a third party power brick.
At this point I am going to try to get into recovery via ABD, but I am not confident that my device will even be recognized by my computer.
Many of my online accounts have an authenticator from my phone tied to them, I am desperate to get access to this again. Is there anything else that I have failed to try?
Many Thanks.
EDIT: I would also like to make note that I have taken very good care of my device and that there is no outward physical damage to the device. With this being said, is it possible that the drop could have rendered an issue with the internal components? Perhaps my device was still on and the screen just went out on me? Though would this also render the LED indicator inoperable as well? Perhaps the battery was jostled loose? Though in such as tightly packed unit, would this even be possible?

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