Problem after a 120 VAC Domestic Power Failure,
Greetings, my name is Angel Trujillo and I would like to request assistance from you guys to solve a problem with my Samsung tablet. While charging my GT-N8000 tablet I had a domestic power failure at home, after that I realized that the tablet did not light or illuminate the screen and did not able to turn it on.
I was doing a lot of tests on it and I realized that the tablet turned on only if I disconnected the video flex that is on the far right part (Just beside the left speaker area). When connecting the power charger, the shielding housing near the flex connector starts heating and shuts off. What could be causing this? Problems on the screen or on the controller, regulator, located on the motherboard?
Can someone please help me with this issue?
Thank you in advance for the support you can give me.
Best Regards,
Ángel Trujillo
Requires service repair diagnostics .
JJEgan said:
Requires service repair diagnostics .
Click to expand...
Click to collapse
Any suggestions for Service Repair provider, I'm located at Venezuela.
Thanks you for your quick answer.
Best Regards
Ángel Trujillo
Sorry not a clue .
Related
Hi,
I recently had a problem with one of the IC's on my Mini and had it fixed.
It's working fine now but the red led on the top of the phone is constantly glowing which did not happen before I had it serviced.
They haven't changed any software on the phone.
Any idea what could be causing this and how to turn it off?
Thanks
adityakalro said:
Hi,
I recently had a problem with one of the IC's on my Mini and had it fixed.
It's working fine now but the red led on the top of the phone is constantly glowing which did not happen before I had it serviced.
They haven't changed any software on the phone.
Any idea what could be causing this and how to turn it off?
Thanks
Click to expand...
Click to collapse
Low Battery?
hitu said:
Low Battery?
Click to expand...
Click to collapse
Actually the red LED is only constantly on when the back battery cover is off (on some builds of the Magician reportedly - mine included). Good chance that whoever serviced your phone might have stuffed up the two metal switches or their contacts that detect whether the cover is off or not. These switches should be pretty obvious when the cover is off - silver, pointy and spring-loaded.
No. If there is any problem with cover switch (open constantly) - PDA will not turn on. There may be an issue with daughterboard (earphone speaker and all leds are on a small "daughterboard", connected to main board with small connector, that's often broken, if phone were dropped. Or there may be some circuit malfunction, however, only the qualified specialist can find it.
JDark said:
No. If there is any problem with cover switch (open constantly) - PDA will not turn on. There may be an issue with daughterboard (earphone speaker and all leds are on a small "daughterboard", connected to main board with small connector, that's often broken, if phone were dropped. Or there may be some circuit malfunction, however, only the qualified specialist can find it.
Click to expand...
Click to collapse
Hmmm, thats true, so its most likely a fried or loose component. Have you tried twisting the hands of your friendly Magician servicer ?
Hi all.
Lately I'm facing a strange problem with my device.
when I navigate with it in a sunny day,
or talking on the phone while charging,
the devices gets hot and the screen goes down.
I can hear that the device is working and the buttons is working, but the
touchscreen is 'dead'. its all black.
Even a softreset won't fix it, the device goes up without the screen.
To fix it I need to pull out the battery for like 2 minutes untill the device gets cold.
is it hardware problem? Anyone else experienced any of these problems?
Thanks!
...ehem...
try to charge it via USB and not a car charger. Is there any difference now?
IMHO you should replace the device
the same problem
Hi
I have the same problem than you
I can use my Polaris in my computer with MyMobiler application but the sceen it's always black.
Sometimes when I do a Hard reset and press button left side it's OK but after some days it's comming again.
I think is not a hardware probleme but software problem.
Do you have resolve your probleme ?
Moh
mmoh said:
Hi
I have the same problem than you
I can use my Polaris in my computer with MyMobiler application but the sceen it's always black.
Sometimes when I do a Hard reset and press button left side it's OK but after some days it's comming again.
I think is not a hardware probleme but software problem.
Do you have resolve your probleme ?
Moh
Click to expand...
Click to collapse
I haven't resolve the problem yet.
the screen getting black is due to the nature of how a display works. i dont know of it actually damages the device, but i strongly believe so.
the working conditions of the device are written down in the manual, if you exceed those they might not replace your unit. this of course sucks, but it *is* written down to not expose the unit to direct sunlight.
schaggo said:
the screen getting black is due to the nature of how a display works. i dont know of it actually damages the device, but i strongly believe so.
the working conditions of the device are written down in the manual, if you exceed those they might not replace your unit. this of course sucks, but it *is* written down to not expose the unit to direct sunlight.
Click to expand...
Click to collapse
I didn't know about the exposing to the sun ...
well, I hope it isn't got damaged badly.
thanks.
As I said, I'm not sure about the damage part, I could be completely wrong. I just think it *could* be...
If it doesnt change and the device gets unusuable all the time, I'd suggest you send it in for a replacement. Maybe you really got a bad unit, who knows.
Edit: I just thought of stuff which is usually written down in manuals and the glovebox problem popped in my mind: devices stored in the glovebox of your car are breaking down because of the sheer heat which builds up when the car is standing in the sun for a long time. All sorts of displays usually break or get completely black until the unit could cool down again... And in the glovebox they werent even exposed to direct sunlight, its just the heat...
hello. I have same problem. But i can't catch situation when it appears. I think, the sun is not an main culprit, because my phone goes down, when i
playing games in the room! may be it's overheating, but cooling doesn't help me.
To fix it, i do several soft resets (sometimes more then 300 ). Sometimes one reset helps, sometimes no. I think, it is hardware problem. Also i have problems with my camera (colormess). May be they are connected.
I will try to send it to service.
Hey, i put my device into refrigerator, and screen is working . I have tried to reanimate it since yesterday. Battery unplugging didn't help.
F*******K!!!
After ten minutes in the room with temperature near 20 C it's black again.
Can be problem with temperature sensor?
lamerbot said:
Hey, i put my device into refrigerator, and screen is working . I have tried to reanimate it since yesterday. Battery unplugging didn't help.
Click to expand...
Click to collapse
Don't put it in the refrigerator without putting it in a plastic bag or something. Moisture can kill it.
i put it into plastic pack.
But i think, that I'll kill it myself by throwing in the wall
Hm, question:
Where does temperature sensor dislocated? In battery or in PDA?
Well,
In the lab they told me my Board damaged up.
total-lost
What kind of damage?
this problem i faced it two times ,one of them when i put it inside my car and the AC was runing (cold) and my screen became black
and the other time it happened in a hot condition (also in my car)
realy this is very strange
and the solution for both to remove the battery for a while
Hi
Yesterday my phone just stopped displaying anything. Touch is working (i can switch off wakeup alarm), rest of it also (sounds, reminders etc)
i do not dropped it - just it was lying on table. i checked inside - everything is connected as it was, (these two keyboard screen cables also) so really hell no idea what happened
1. It is worth to repair ? or better buy a new One ?
2. Maybe somebody know someone in Poland, or close who can really repair it ?
Any info or tip will be Appreciated
Regards
W.
lightning3 said:
Hi
Yesterday my phone just stopped displaying anything. Touch is working (i can switch off wakeup alarm), rest of it also (sounds, reminders etc)
i do not dropped it - just it was lying on table. i checked inside - everything is connected as it was, (these two keyboard screen cables also) so really hell no idea what happened
1. It is worth to repair ? or better buy a new One ?
2. Maybe somebody know someone in Poland, or close who can really repair it ?
Any info or tip will be Appreciated
Regards
W.
Click to expand...
Click to collapse
Almost guarantee it is the ribbon cable
Sent from my PHOTON Q using XDA Free mobile app
So, how did you solve that issue after all? Did you order some parts, buy a new one or even move onto another device?
Check if is display really dead under lamp - maybe is broken backlight ic.
it is for
50% backlight ic problem
30% flex cable problem
20% both flex+ic problem
I have the same problem with two phones. Replaced the screen and everything except the motherboard, it didnt help.
CornholioGSM said:
Check if is display really dead under lamp - maybe is broken backlight ic.
it is for
50% backlight ic problem
30% flex cable problem
20% both flex+ic problem
Click to expand...
Click to collapse
Unfortunatly, NO
Bought second Photon with damaged camera and speaker
replaced screen - same symptom
@CornholioGSM - i will be in Prague from 7th to 11th of May - Would you mind to help me ? I will have both Photons.
lightning3 said:
Unfortunatly, NO
Bought second Photon with damaged camera and speaker
replaced screen - same symptom
@CornholioGSM - i will be in Prague from 7th to 11th of May - Would you mind to help me ? I will have both Photons.
Click to expand...
Click to collapse
...oooh tooo late
Hi all,
A follow up to my enquiry here about a badly damaged phone: forum.xda-developers.com/google-nexus-5/help/transplanting-main-board-data-recovery-t3253789.
I ordered a second Nexus 5 with the intention of transplanting the first mainboard into the second body, only to discover the first motherboard has a damaged daughterboard connector from the initial accident. The daughterboard connector/pins (?) aren't attached to the mainboard anymore. Photos here (that's the disconnected socket/connector next to the board):
cl.ly/142v473d2s17
cl.ly/33461J0K1Q2d
cl.ly/2S190F1v2M2c
In spite of the missing socket, I actually tried connecting it to the rest of the phone and powering it on anyway - no luck however. Didn't budge after holding down the power button. I can confirm that the rest of the second phone works when I plugged it all back together with it's mainboard.
Questions then - is it possible for a professional (presumably) to reconnect this and get the board back up and running? Or is my motherboard and data completely gone at this point?
I realise the solution probably won't be cheap at this stage, however I really want to recover some of the data off that phone and I'm just hoping that's in some way shape or form possible.
Thanks for any advice. Having a bad run of luck and really hoping for a bit of a holiday miracle with this now...
rflxion said:
Hi all,
A follow up to my enquiry here about a badly damaged phone: forum.xda-developers.com/google-nexus-5/help/transplanting-main-board-data-recovery-t3253789.
I ordered a second Nexus 5 with the intention of transplanting the first mainboard into the second body, only to discover the first motherboard has a damaged daughterboard connector from the initial accident. The daughterboard connector/pins (?) aren't attached to the mainboard anymore. Photos here (that's the disconnected socket/connector next to the board):
cl.ly/142v473d2s17
cl.ly/33461J0K1Q2d
cl.ly/2S190F1v2M2c
In spite of the missing socket, I actually tried connecting it to the rest of the phone and powering it on anyway - no luck however. Didn't budge after holding down the power button. I can confirm that the rest of the second phone works when I plugged it all back together with it's mainboard.
Questions then - is it possible for a professional (presumably) to reconnect this and get the board back up and running? Or is my motherboard and data completely gone at this point?
I realise the solution probably won't be cheap at this stage, however I really want to recover some of the data off that phone and I'm just hoping that's in some way shape or form possible.
Thanks for any advice. Having a bad run of luck and really hoping for a bit of a holiday miracle with this now...
Click to expand...
Click to collapse
Hi
Sorry for your problems. To help yourself understand how your Nexus 5 hardware is put together you should take a look at the youTube video posted by LE55ONS "Nexus 5 Teardown" -. Just do a search for LE55ONS in YouTube. He has posted many very well made videos on how to repair smartphones.
It will show you every aspect of the hardware.
I hope that helps you
Bigbossradio said:
Hi
Sorry for your problems. To help yourself understand how your Nexus 5 hardware is put together you should take a look at the youTube video posted by LE55ONS "Nexus 5 Teardown" -. Just do a search for LE55ONS in YouTube. He has posted many very well made videos on how to repair smartphones.
It will show you every aspect of the hardware.
I hope that helps you
Click to expand...
Click to collapse
Thanks but this doesn't really address what I've asked regarding the damaged connector.
I would say, in theory it should be possible to reattach that connector with the proper reflow equipment, but it rather depends on how much damage was done when it was pulled off the board. If it is just the solder that let go then not so bad, but if any of the copper pads/traces on the main board stayed attached to the connected when it got torn off then it becomes a much more difficult repair. The puzzling part is even with that connector removed you would think the main board would still be able to power up, with obviously the ports attached to the flex board not being available so that makes me wonder if perhaps other damage has been done to the main board? You could confirm this by seeing if can power up the other working Nexus with that same connector unplugged. If the other one powers up then that's a pretty strong indication you've got additional damage beyond just the torn off connector.
Hello XDA-Forum
I dont know where to post the thread, because it belongs to every smartphone brand. If you have an other opinion to that, feel free moving or deleting it.
But now..introducing myself,, a crazy dude and android noob², who tried to fix his bootloop issue since yesterday 3 p.m./15:00 Uhr and 10 minutes ago, before started writing that post, I found my solution.
Smartphone: Huawei P8, GRA09
What causes the bootloop? The fault display
What causes the defect? It felt from my hand on an oven door corner and ended on the ground.
What happened while and after its flight?
1st was turned off instantly,
couldn't turn on by pressing the power-button
after connecting to charging cable -> bootloop syndrome
if I disconnected the battery and re-connected it, sometimes an empty battery-icon had been shown on the display in loop
it seemed the p8 couldn't detect the battery, because without charging cable the Huawei didnt work
How do you know thats the display? I remembered storing an other vodafone-branded p8 with cracked functional display, in a box - and I replaced it at last.
Other defects on the display? Nope, the display is optical ok, no freezes, no graphic fails, no crack.
I was also able to enter the fastboot&rescue-mode,
adb didnt work.
fastboot commands also (command is not allowed , because p8 is locked)
Sincerely
ooh, k, thats weird.
i replaced the vodafone branded mainboard with the one from the p8, where I thought the display caused the bootloop of os and battery icon.
and it worked.
but now.... i have the issue also with the display of the other smartphone.
so it is not the display alone.
but what kind of hardware issue could caused by a fall damage, when the display doesnt have optical defects,
and the charging does not work now..
now, i have the same issues like yesterday. thats weird. :/
doey anyone have some advice?
could a flash fix the issue? or is it something with transistors on the mainboard?.. thats weird.. :/
ok, in the moment I lay it down on the ground the handy turns off instantly.
and now i have the same issues with the other one^^ wtf².
i hope it is the battery. but i dont know.... thats so unreal..^^
ok, it seems it was the battery.
and the fall damage relates the battery and the mainboard.
Because I purchased a new battery on Ebay and the vodafone-branded mainboard detects the new battery.
the main mainboard without not (but heres also a difference to the old behavior after connected to the charging-cable (the accu-sign still blinks after connecting it to the charging cable, but the boot won't work. I tried it the huawei sign will be displayed. and then it turns off and the accu sign will be displayed again)
anotherbootloop-solution said:
ok, it seems it was the battery - and the mainboard.
Click to expand...
Click to collapse
anotherbootloop-solution said:
and the fall caused the battery- and the mainboard damage.
Because I purchased a new battery on Ebay and the vodafone-branded mainboard detects the new battery, when I use the new battery, with the old mainboard and the display (which felt on the oven door)
Click to expand...
Click to collapse
anotherbootloop-solution said:
the main mainboard without detects it not (but here's also a difference to the old behavior after connecting to the charging-cable (the accu-sign still flashes after connecting it to the charging cable, but the boot won't work. I tried it. the huawei sign will be displayed. and then it turns off and the accu sign will be displayed again)
Click to expand...
Click to collapse
Am I a coder now? XD