First i must say hello to all recently i have bought 2 phones one for me and another to my girlfriend the phones are a moto g cdma from verizon mine is working ok but the other stopped working after a fall
My girlfriend had the phone but then fall to the floor
The phone shut down, also the lcd was completely broken, but the digitizer was intact. so i know that the digitizer is fused with the lcd, so if i need to replace it i just need to buy a new lcd+digitizer. alright let's tall about the logic board and battery
i oppened the phone and test the battery it says 3.7 V with a friend multimeter and i have removed it.
when i diassembly the logic board from the screen also took off the front camera, the flex also broken, but since the screen will not work anymore this will not be a problem i think.
well i just got the logic board, and wanted to connect to my pc to recover the photos but when i did it the pc didn't recognized it but when i connect it to my pc or a wall charger, a white light (notification led) turns on and doesn't turn of only if i disconnectthe usb cable.
i thought that i need the battery connected to turn it on. i just connected the battery flex , and connected it again. this time the led won't turn on instantly. just like a minute and then the notification led turns on, i don't know if that means that the logic board is broken too.
i just need to know if i need to connect the screen also to turn it on? because i don't want to purchase a replacement and see that the logic board is not working too.
if you have some thoughts to share with me just write here, please i hope you can help me
thanks in advance, henser.
Related
Hey,
I accidently dropped my phone in water a couple of days ago. The backlight doesnt work. Under a really bright light i can see the lock screen and it still functions. Is it possible to replace just the backlight? or what should i do? I dont believe this would be covered from motorola and I live in canada got the phone shipped from the states.
Any advice would be appreciated.
Thanks,
James
I'm guessing you might need a new screen/display. Perhaps do a search and find a repair place you can ship it and get an estimate? I know HTC offers such repairs dirctly (ship the phone, they call you with an estimate). I'd bet Moto does as well if you're not comfortable with 3rd party repair.
aznproto said:
Hey,
I accidently dropped my phone in water a couple of days ago. The backlight doesnt work. Under a really bright light i can see the lock screen and it still functions. Is it possible to replace just the backlight? or what should i do? I dont believe this would be covered from motorola and I live in canada got the phone shipped from the states.
Any advice would be appreciated.
Thanks,
James
Click to expand...
Click to collapse
I have the same problem right now except mine was not dropped in water. In a bright light I can see the lockscreen and also could see the emergency dialer tonight but the keyboard was not reacting on certain buttons either. One screen said to unlock enter your gmail account info,I tried to enter my name and the period symbol(.) was not working for me. I'm thinking maybe the LCD screen needs replaced or the ribbon cable,IDK. Any help is GREATLY appreciated.
Edit: Essentially I finally got logged into the phone and the keys were working fine,the screen was still dim so I turned the brightness all the way up and turned off automatic backlight. I replaced the LCD screen and digitizer and now the phone is not starting for me. I'm about to replace the Flex Ribbon Cable inside the phone and see if this corrects the problem. Right now i cant get the phone to start up so I'm thinking the ribbon cable is disconnected somewhere because it hooks to the motherboard and the LCD or the motherboard is fried. IDK,I'll let everybody know what happens with this project.
lcd not working
PS3AndroidHacker said:
I have the same problem right now except mine was not dropped in water. In a bright light I can see the lockscreen and also could see the emergency dialer tonight but the keyboard was not reacting on certain buttons either. One screen said to unlock enter your gmail account info,I tried to enter my name and the period symbol(.) was not working for me. I'm thinking maybe the LCD screen needs replaced or the ribbon cable,IDK. Any help is GREATLY appreciated.
Edit: Essentially I finally got logged into the phone and the keys were working fine,the screen was still dim so I turned the brightness all the way up and turned off automatic backlight. I replaced the LCD screen and digitizer and now the phone is not starting for me. I'm about to replace the Flex Ribbon Cable inside the phone and see if this corrects the problem. Right now i cant get the phone to start up so I'm thinking the ribbon cable is disconnected somewhere because it hooks to the motherboard and the LCD or the motherboard is fried. IDK,I'll let everybody know what happens with this project.
Click to expand...
Click to collapse
What happen to letting everyone know? Were you ever able to get it going? Was it the flex cable? How did you get the LCD working.
Replaced the flex ribbon cable and it still didnt help anything. Guess its just the phone. I trashed the phone a while ago anyways and am currently running a rooted Droid 4
Sent from my DROID4 using xda premium
Hello Fellow Forum Users and Gurus
I need some serious advice in regards with my Xperia Play R800i. I have had this phone for over two years now and have taken it in for servicing before (just for cracked digitizer, feel like I paid way more than I should have since digitizer costs a fraction of what I paid and is quite easy to install) and now I have an even bigger problem:
> My Xperia Play's flex cable wore out and my touchscreen was no longer responsive; in addition to this, my face buttons (home, search, menu, back).
> I purchased a new flex cable and had it installed - the face buttons work, but the screen does not display anything - my phone would flash a purple light and vibrate. Icing on the cake is that once I turn on my phone, the phone and battery start getting real hot within minutes.
Also, whenever it doesn't power on the LED flashes red (insufficient power going to phone? Hardware failure?)
> I decided to have a serviceman assess my phone, see if the cable was set in properly - he came back to me and said that there may be possible liquid damage that could have occurred before and only now presenting itself since I changed the flex cablethough this seems highly unlikely:laugh:.
> Tried to boot into fastboot and flashmode and instead of flashtool picking up my phone name, it picks the serial number and wont flash anything to it.
> I headed over to another serviceman who then mentioned that there may be some mis-communication (I think its what he said, accent threw me off) - I assumed he meant the flex cable could be defective? Or maybe my IC board has kicked the bucket?
Thinking of switching back my old flex cable but wanna hear from you guys what think it could be.
P.S. I have seen similar threads asking about flashing LEDs and flex cable issues, one thread in particular referred the poster to an application called SEtool but, for one, I cant use it since my phone (1) burns up fast and (2) wont boot up most of the time (drains/"kills" the battery whenever it heats up).
Hi all
I have had my nexus 5 for a while now and just as i was flying overseas some strange things happened.
First the vibration stopped working which i knew was a loose connection on the back of the phone. Holding that area down would get it working again. Then the touch display stopped working. The LCD worked but could not touch anything to unlock the phone. I disassembled the phone and assembled it again and strangely it worked again although i didnt see anything obvious. Then is happened again...
I disassembled the phone and played around with it for a while and noticed if pressed down on the connection where the flex cable connects to the motherboard it would work again. but when i would release the pressure it would be funny again. I did this a number of times until eventually the whole LCD/blacklight should shut off. Now i can rarely get it to display anything. The phone is working because the LED light would flash and i can hear the messaged coming through. I just cannot see anything.
I replaced the flex cable with a new one and still the same issue. I replaced the LCD + digitizer + frame and still the same issue. I guess its the motherboard. Can i fix this ??
Now for some more issues:
I bought a broken Nexus 5 while overseas and i swapped the motherboard out and everything works! So it as definitely the motherboard. However, the second motherboard is having issued the the battery. I have every indication the battery is charging. However the battery percentages is stuck on 40%. It would flicker around 39% 40% instantly and when looking at the battery graph on the phone it is noisy, it is not a constant line. The percentage is not a true indication of the battery charge. I cannot get the phone to turn on just by the battery itself no matter how long i charge it for. I have swapped batteries out and i still get the same issue. I have swapped flex cables and still the same issue. Could it be that the second motherboard is also damaged??
I used the amphere app for a while while i had some power and it shows 100mA while charging but a voltage of 0V! When I unplug the cable it will shutoff. Sometimes i cannot even boot it up while charging.
Amphere showing 1%
h**ps://drive.google.com/open?id=0B9KF5ld-Rlu_VWY2eHA5VXE4R3M
What is wrong with these two motherboards?! I do not see anything obvious on the board itself.
I now see the new Nexus 5X is out but i am hesitant in buying it...This is the first phone i have had major issues with.
PS, i gave the latest updated
Thanks for your help guys. I will provide whatever information i can.
It sounds like your 1st phone is having the same problem I have with mine, which is described here: http://forum.xda-developers.com/google-nexus-5/help/main-board-socket-flex-cable-super-t3217281
Use a magnifying glass to see if any pins on the socket are broken. I still don't know if it's fixable.
ourandroid said:
It sounds like your 1st phone is having the same problem I have with mine, which is described here: http://forum.xda-developers.com/google-nexus-5/help/main-board-socket-flex-cable-super-t3217281
Use a magnifying glass to see if any pins on the socket are broken. I still don't know if it's fixable.
Click to expand...
Click to collapse
thanks for that. I believe this is the same problem also.
Although i cannot find any abnormal pins...
Macro shots of suspect connection:
https://drive.google.com/folderview?id=0B9KF5ld-Rlu_S2hwUDhlQUJlN2c&usp=sharing
Hello there, i got a phone (N5 16GB black) like 2 months ago, which according to the info i get "went suddenly black and now refuse to turn on the screen" .
The phone itself is working, when connected to PC i can see him as removable storage, but cant access it.
When its charging LED not showing anything.
These 2 months im googling, trying figure out what it could be, i found nothing I completly cleaned all pins with isopropyl alcohol, replaced battery ,replaced FLEX cable and a week ago i bought new LCD + Digitizer front frame ..... nothing works.
Now im out of ideas and internet also. Can someone help me ?
Hi
3 months ago my charging port stopped working and then I cut the screen's flex cable by mistake... Anyway i changed both and it worked but today, the battery was getting very hot (i saw smoke coming from it when i opened the phone) so i disconnected the battery
Now when i try to turn the mi4 on i have black screen (but it turns on) Why??? Try to disconnect and reconnect every flex cable...
Also, the battery is still very hot since 3 hours
Thanks for helping me.
Hello my friend,
I have a similar problem as yours. In my case the LCD connector on the mainboard had 2 missing (extremely small) pins. I had it replaced but now the screen is black. Everything else works! (touch, vibration etc.).
I have heard that you can use the MI PC Suite to emulate the screen on a PC. Try it.
Can anyone help?