HTC One X black screen - GSM-Forum

kostelectronics · 03-03-2013, 12:46

Hi all,

I have 1 HTC One-X here with complete black screen. The customer changed the LCD because it was broken. (only the glass).

The strange thing is, the screen worked suddenly after i pressed many times the power-button, but only 1 time. Now is the screen completely black and i can't see anything (also not with good light from outside). I don't think that the backlight is the problem.

I changed already the 2R2 coil and checked the complete Backlight-Driver circuit before.

I can hear the sounds and the phone seems to work and the pc detect it normally.

What can this be? reball the nVidia CPU?

BR Matthias

Benhure · 03-06-2013, 15:49

have you solved the problem?

kostelectronics · 03-08-2013, 18:43

no! I asked the customer to bring me the old broken screen and i tryed with this -->no display! I changed the 2R2 Coil another time, all not help.

Any ideas? Does anybody have a schematic?

BR from Switzerland!

venia1962 · 03-08-2013, 19:55

Also the same problem. Chain checked everything. Replaced the throttle from CE K770. All the same, nothing has changed. With the inclusion of heated strongly nVidia CPU. I think it goes down.Who turned out? Can someone tell me what to do.Thank you.

klcheng · 04-09-2013, 19:26

]me too after change lcd lcd blank now....any solution ???/

mobilefury89 · 04-25-2013, 17:18

maybe the flex isnt pushed in all the way. watch this video HTC One X Touch Screen Glass Digitizer & LCD Display Repair Replacement Guide - YouTube

watch 5:35 and up

gaz3009 · 06-14-2013, 13:10

Hi, did anyone find a solution to this problem? I am in a similar situation replacing the lcd. As i put in the new lcd i tested it and it worked a couple of times but once id almost fully reassembled the phone i tested it again and now all i get is a black screen (but lights and vibration are working). I already tried disconnecting and reconnecting the cables. Any info or advice for things to try on this would be great thanks!!

Mobile Fix Simple · 06-24-2013, 08:10

Quote:

Originally Posted by kostelectronics

Hi all,

I have 1 HTC One-X here with complete black screen. The customer changed the LCD because it was broken. (only the glass).

The strange thing is, the screen worked suddenly after i pressed many times the power-button, but only 1 time. Now is the screen completely black and i can't see anything (also not with good light from outside). I don't think that the backlight is the problem.

I changed already the 2R2 coil and checked the complete Backlight-Driver circuit before.

I can hear the sounds and the phone seems to work and the pc detect it normally.

What can this be? reball the nVidia CPU?

BR Matthias

Please do not reball the nVidia IC unless you want to destroy your phone. Please check the back light ways and the value of both ends of the coil. If you find any difficulties, please send PM to me. Cheers.

abelrossi · 10-27-2013, 23:37

Has anybody been able to fix this ?

reserve · 10-28-2013, 00:22

Check display conetor

Wbr

mmrozibul · 10-28-2013, 04:01

connector problem maybe

DEFFC0N · 10-30-2013, 20:14

Hi

I have this same problem change my HTC ONE X + 728 model lcd and digitizer and now i have black screen and when push power only flashed reds down lights and listen music and booting phone.
Who solved problem black sreen ?

br

AndreyPkr · 10-31-2013, 21:02

Quote:

Originally Posted by kostelectronics

Hi all,

I have 1 HTC One-X here with complete black screen. The customer changed the LCD because it was broken. (only the glass).

The strange thing is, the screen worked suddenly after i pressed many times the power-button, but only 1 time. Now is the screen completely black and i can't see anything (also not with good light from outside). I don't think that the backlight is the problem.

I changed already the 2R2 coil and checked the complete Backlight-Driver circuit before.

I can hear the sounds and the phone seems to work and the pc detect it normally.

What can this be? reball the nVidia CPU?

BR Matthias

I had this problem with the same device and I managed to solve it by reheating the nVidia CPU.

BUT for rookies: DO NOT REHEAT the nVidia CPU before:
1. make sure that the LCD is functional (try with 2 diffent LCDs)
2. make sure that the LCD connnector is in good condition
3. reflash the phone
4. replace the 2R2 coil on MB
5. if 1,2,3&4 wasn't working then reheat/rebll nVidia CPU

abelrossi · 11-03-2013, 23:28

Hi.

I did a test today that worked.
I have this issue and i tried everything.

If i boot my phone keeping the GPU pressed down hard the LCD works.
Do not use your hands, i used the rear part of a screw driver. Pay attention to not destroy rear camera. I put it on a box. Cover GPU with the something to not ruin it.

Now, does anybody have a suggestion ?
I need to rehaer or reball but i don't have these type of skills.

Of course it can't be used this way. I acutally hurt my hands pushing over and over on CPU.

03-03-2013, 12:46	#1 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	HTC One X black screen Hi all, I have 1 HTC One-X here with complete black screen. The customer changed the LCD because it was broken. (only the glass). The strange thing is, the screen worked suddenly after i pressed many times the power-button, but only 1 time. Now is the screen completely black and i can't see anything (also not with good light from outside). I don't think that the backlight is the problem. I changed already the 2R2 coil and checked the complete Backlight-Driver circuit before. I can hear the sounds and the phone seems to work and the pc detect it normally. What can this be? reball the nVidia CPU? BR Matthias

04-09-2013, 19:26	#5 (permalink)
klcheng Freak Poster Join Date: Sep 2005 Location: EMMC JTAG Age: 44 Posts: 169 Member: 180874 Status: Offline Thanks Meter: 20	]me too after change lcd lcd blank now....any solution ???/ Last edited by klcheng; 04-09-2013 at 19:32.

10-28-2013, 00:22	#10 (permalink)
reserve No Life Poster Join Date: Sep 1999 Age: 54 Posts: 1,199 Member: 521 Status: Offline Thanks Meter: 76	Check display conetor Wbr Last edited by reserve; 10-28-2013 at 00:28.

03-06-2013, 15:49	#2 (permalink)
Benhure Freak Poster Join Date: Oct 2001 Location: Earth Posts: 248 Member: 6884 Status: Offline Sonork: 100.1621477 Thanks Meter: 105	have you solved the problem?

03-08-2013, 18:43	#3 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	no! I asked the customer to bring me the old broken screen and i tryed with this -->no display! I changed the 2R2 Coil another time, all not help. Any ideas? Does anybody have a schematic? BR from Switzerland!

03-08-2013, 19:55	#4 (permalink)
venia1962 Freak Poster Join Date: Mar 2009 Location: RUSSIA Posts: 117 Member: 997760 Status: Offline Sonork: 100.1589512 Thanks Meter: 70	Also the same problem. Chain checked everything. Replaced the throttle from CE K770. All the same, nothing has changed. With the inclusion of heated strongly nVidia CPU. I think it goes down.Who turned out? Can someone tell me what to do.Thank you.

04-25-2013, 17:18	#6 (permalink)
mobilefury89 Junior Member Join Date: Jan 2013 Posts: 7 Member: 1865960 Status: Offline Thanks Meter: 0	maybe the flex isnt pushed in all the way. watch this video HTC One X Touch Screen Glass Digitizer & LCD Display Repair Replacement Guide - YouTube watch 5:35 and up

06-14-2013, 13:10	#7 (permalink)
gaz3009 Junior Member Join Date: Jun 2013 Posts: 1 Member: 1959645 Status: Offline Thanks Meter: 0	Hi, did anyone find a solution to this problem? I am in a similar situation replacing the lcd. As i put in the new lcd i tested it and it worked a couple of times but once id almost fully reassembled the phone i tested it again and now all i get is a black screen (but lights and vibration are working). I already tried disconnecting and reconnecting the cables. Any info or advice for things to try on this would be great thanks!!

10-27-2013, 23:37	#9 (permalink)
abelrossi Junior Member Join Date: Jul 2013 Posts: 8 Member: 1978377 Status: Offline Thanks Meter: 1	Has anybody been able to fix this ?

10-28-2013, 04:01	#11 (permalink)
mmrozibul No Life Poster Join Date: Mar 2008 Location: Inside Technology Posts: 1,008 Member: 725443 Status: Offline Sonork: 100.1601305 Thanks Meter: 330	connector problem maybe

10-30-2013, 20:14	#12 (permalink)
DEFFC0N Freak Poster Join Date: Jan 2006 Location: -==P0LAND==- Wiocha city Posts: 65 Member: 227181 Status: Offline Thanks Meter: 34	Hi I have this same problem change my HTC ONE X + 728 model lcd and digitizer and now i have black screen and when push power only flashed reds down lights and listen music and booting phone. Who solved problem black sreen ? br

11-03-2013, 23:28	#14 (permalink)
abelrossi Junior Member Join Date: Jul 2013 Posts: 8 Member: 1978377 Status: Offline Thanks Meter: 1	Hi. I did a test today that worked. I have this issue and i tried everything. If i boot my phone keeping the GPU pressed down hard the LCD works. Do not use your hands, i used the rear part of a screw driver. Pay attention to not destroy rear camera. I put it on a box. Cover GPU with the something to not ruin it. Now, does anybody have a suggestion ? I need to rehaer or reball but i don't have these type of skills. Of course it can't be used this way. I acutally hurt my hands pushing over and over on CPU.