Flash-LED not working anymore - Desire HD Q&A, Help & Troubleshooting

Hi,
the LED flash of my DHD isn't working any more. Whenever it should appear (flashlight app, camera app) it just keeps off. The error suddenly - I was using the app one day and the next one it chose to stay dark.
Unfortunately there is no warranty left on the device.
Do you have any idea what the problem might be? I installed a new LCD screen some time ago. Maybe it's a loose cable or connector that is causing this issue?
Thanks in advance!

Related

Dead Camera, but LED blinks randomly

Hi there,
Now I don't really know where to start...
I had to RMA my desire a while back and they replaced the mainboard and the "upper" board (because of random reboots as well as a dead camera).
About two weeks after I got my phone back, the camera (respectively, I guess, it's the upper board) stopped working again.
Things which stopped working: Cam+LED, front LEDs, internal phone speaker (not the one to listen to music), audio-jack. Those things are all in the "upper" part of the phone, that's why I think the board died.
This is the same for stock/custom ROM, RUU does not restore the function to any of these.
I did not want to send it to repair again straightaway because the things I do mostly (internet, mail, messaging) still work and because it took >6 weeks to repair.
Now the strange thing is, as the title already states, my LED blinks up randomly (for about 1/2 to 1 second). It sometimes blinks when doing a titanium backup, sometimes when (un-)installing an app and sometimes when I start apps.
I think it mostly happens when using apps that request SU access, but not exclusively those apps.
Has anybody gotten a similar problem or any idea, insight?
I'm not really looking for a solution besides sending it to the repaircenter again, but I can't stop wondering why this happens...

Screen turns on/off randomly

Hi, I'm new to this forum.
Some days ago my DZ started to turn on the screen randomly when it was locked. The phone is rooted, so i tried to wipe all data and install an updated version of my rom (virtuous), but it did not help. And now the screen also turns on/off (flashes for a couple of seconds) when I use it.
Does anyone has had this kind of trouble before? I hope it's not some hardware that are broken :/
Thanks for helping!
How's your phone now? My G2 was doing what sounds like yours was doing too, and then just died completely (the screen that is everything else works).
I bought a new LCD replacement hoping it would fix the issue. Followed a Youtube bit on replacing it, and successfully reconnected everything, but its not working. I'm going to be taking it apart again tomorrow to see if I possibly missed a connection but I don't think the screen replacement is going to work.
Could be a software issue perhaps. What are your thoughts?

[Q] Phone stuck in screensaver mode

Hi!
I brought my Xperia Play phone USED two years ago and I've never had any problems with it.
However, recently, the phone has started to freeze itself in "screensaver" mode (Where the screen goes black after 15 seconds and locks the phone), but the screen won't light up no matter which button I press. I've had to restart the phone every time this happens.
It's been behaving strange at start up as well, as it sometimes take 20 minutes just for it to turn on, while on other occasions, it won't turn on at all!
Is this problem caused by the battery, or is it the hardware?
Is it with stock firmware?
Vortelf said:
Is it with stock firmware?
Click to expand...
Click to collapse
Yes.
I've never modded it or installed custom firmware/apps.
Have you tried factory resetting it?
Vortelf said:
Have you tried factory resetting it?
Click to expand...
Click to collapse
Yes, but it didn't fix it. The problem still occurs.
tldr: Black screen, no display, everything works "under" (I can answer the phone etc). Not a flex cable problem because occurs randomly, regardless of the slider being open or closed. The problem also occurs during boot up, so rather not a software problem.
I think I have something similiar. Everything was fine until a few days ago the screen didn't want to unlock..or at least I thought it was that.
Basically the phone sometimes works OK but sometimes if I turn off (lock) the screen, it won't go back. To be precise, the phone works and if someone calls me I can pick it up moving the finger where the slider should be, it's just the display doesn't turn on. Same goes for booting, bootloader logo etc, so IMO it's not a software problem.
Strange thing is that it just randomly pops back, sometimes when I move the gamepad slider, sometimes when I put in a jack cable or if I hard reset the phone (remove battery). I've had problems with the flex cable in the past and this time I know that it's not it (no difference if I open/close the slider).
My guess would be some power supply or LCD driver IC issues, because the screen stops working almost everytime if I put the phone into the dock. Moreover, if the screen doesn't work, the orange charging LED is not working (green and blue are OK). The moment the screen starts working, the orange charging LED starts working too.
it's very strange but I'm used to electronics doing strange stuff. Just wondering if I should give a try disassembling the phone and trying to fix it or just buy a new one or something?
I might add that I have bought a new battery ~3 months ago, but it's been working fine to this point. I have tried if the same problem occurs with the old/original battery and it's the same.
well, any ideas?
edit: This video shows something very similiar (except the backlight): https://www.youtube.com/watch?v=m4p0-kv1cxA
Same problem. And I guess this guy has it too.
http://forum.xda-developers.com/xperia-play/help/problem-flex-cable-brightness-t2803991
Any help?

[Q] Sometimes my touchscreen stops working

I have had my Moto 360 for just over a week. For the second time the touchscreen stopped functioning. First time I resolved by turning it off (very long press hardware button) then left overnight and it was fine in the morning. Turning it off and back on again didn't help. Couldn't factory reset because no touchscreen.
Second time is now.
Does anyone else have this problem? Any clues how to resolve?
Thanks.
Edit: After left off for a while (instant off and on doesn't work) it is fine now. Anyone have any clues or better suggestions how to fix?
spanielhead said:
I have had my Moto 360 for just over a week. For the second time the touchscreen stopped functioning. First time I resolved by turning it off (very long press hardware button) then left overnight and it was fine in the morning. Turning it off and back on again didn't help. Couldn't factory reset because no touchscreen.
Second time is now.
Does anyone else have this problem? Any clues how to resolve?
Thanks.
Edit: After left off for a while (instant off and on doesn't work) it is fine now. Anyone have any clues or better suggestions how to fix?
Click to expand...
Click to collapse
Yes mine has done it two or three times since the last OTA update, nothing I did to the screen had an effect, had to reboot the watch to recover.
teslabe said:
Yes mine has done it two or three times since the last OTA update, nothing I did to the screen had an effect, had to reboot the watch to recover.
Click to expand...
Click to collapse
Mine doesn't recover immediately on a reboot but it is nice to know I'm not alone in the problem. It's better to know that you've only had this problem since the OTA. That means it can be fixed in software. Thanks.
Same here
Lost "touch" today on mine. Had the 360 for about 4 weeks and not seen the problem until now. Wasn't even sure how to turn it off until I saw "very long press" - thanks!
Turning mine back on straight away was fine so it was just a turn it off and back on thing. Frustrating, but I'm glad it's a software bug rather a touch screen fault, that would be a real pain. Hopefully, if it's a bug it will be fixed.
i think.....
I think this happens when the moto 360 is not set on your wrist
Ddoes anyone solve this issue ? My new moto 360 touch screen doesnt work at all. So i can choose any language in initial setup
This problem Occurs when no static energy is given to the case of the moto360. As soo'n as You touch The Iron ring The touch Will work. Release it and it Will stop working. Ik think The touch screen works rather like a conductive layer between the back of the watch and the screen it self in which the skin gives the energy needed to control the screen. When the back of the watch isn't connected to skin the touchscreen completely stops working.
In video you see what happens
https://youtu.be/KpQ-dqWYO6s
Mine did this too, however I broke my screen ordered a replacement and haven't had the issue since. When mine quite working if I triple pressed the power button it lock the screen then pressing the power button it would turn on and work though. Sometimes it wouldn't come right back on like it froze or something.
Sent from my Nexus 6 using Tapatalk
I've been having this problem too, it's more like my weekend watch but last week i noticed that it wasn't responding and i thought it could be a RAM issue. I've done multiple reboots and it doesn't work.
There was only an occasion where i left it overnight till it almost drained completely and it worked again, and then it started freezing again.

Phone working but screen black

Hello everyone,
I have since the first time an LG G3 (D855) that I root and that works very well.
Recently I bought a new one from a friend for my girlfriend.
He never root it, he reset it and sent it to me by mail.
At the reception, I turn on the phone and there, I have the LED lights, sound start but nothing on the screen.
It reacts when I put the finger on the screen so the touch sensor works.
I try a restart and battery removal but nothing better.
The screen has no shock but I told myself that perhaps during the trip he took a bad cut.
I hope it's just a miswired table, so I dismounted to check, but still nothing.
ThenI try something, I disconnect my phone too and I swapped motherboards.
And then the screen with my card in it work.
While my screen with the motherboards of the phone I just bought stay blank.
So the screen is not broken, perhaps it was a install problem.
So I use LG Flash Tool to reinstall the original rom (following a tutorial )
Everything goes well and ends without worries.
But that didnt change anything, the screen is still black.
Do you have an idea ?
Thank you in advance for your assistance and sorry for my bad english
I just realized that if I strongly illuminates the screen I can see that it works.
It' like brightness was at zero.
It's not a screen problem because when I plug it to the other motherboard brightness is ok.
Someone had this issue?
Same problem here
So I'm having the same problem at the moment, but this is the 2nd time that this has happened to me. Last time. I fixed it by changing charger. It worked for like 2-3 month and then I switched again and the problem came back. I suggest you try a few charges. It took around a week before it got fixed.
Hope it'll work for you.
BTW it was a Nokia charger
Black screen G2 after some seconds even during boot...
EtreRe said:
I just realized that if I strongly illuminates the screen I can see that it works.
It' like brightness was at zero.
It's not a screen problem because when I plug it to the other motherboard brightness is ok.
Someone had this issue?
Click to expand...
Click to collapse
Exactly the same problem on my LG G2.
It often go to black screen, but it's not totally OFF. Touch work, and the screen the same, i noticed using a torch that the brightness when to something like zero, but if i increase the level, it stay dark. Only press power button sometimes come back, but few second later... Dark screen again.
It happens everywhere during boot, in home, in lockscreen, in TWRP.
I tried:
- Change rom
- Flash stock firmware...
- Totally switched off for 2 months
- Detach and reattach the screen
- Test proximity sensor in hidden menu
Nothing worked.
If anyone has an idea...

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