HTC One X LCD Backlight Problem - Page 5 - GSM-Forum

starXman · 06-19-2013, 12:22

Hi friends, i am having here one case, where the image flickers,
and backlight cant turn on, only when mechanical pressure is
applyed to phone, when i twist it or pressure it, image flickers
and light goes off, and sometimes its hard to make it work again.
You think i should just heat the coils and ic with paste flux?

Mobile Fix Simple · 06-21-2013, 07:29

Quote:

Originally Posted by starXman

Hi friends, i am having here one case, where the image flickers,
and backlight cant turn on, only when mechanical pressure is
applyed to phone, when i twist it or pressure it, image flickers
and light goes off, and sometimes its hard to make it work again.
You think i should just heat the coils and ic with paste flux?

Hi mate, you can use multimeter to check the coils and ic whether they are good. In your case, please also check the LCD flex cable. Last time, a customer sent me a water damaged One X, had a similar problem like you, press the phone and the light keeps flashing. I had resoldered the backlight circuit of the LCD and works fine then.

r473r · 06-24-2013, 16:49

What value does the coil has to have to be working ? Can i check it while still on the board or do i have to de-solder it ? And last, how do i check the IC with the multimeter ? Thanks.

Jack_OH · 07-02-2013, 17:03

Quote:

Originally Posted by Mobile Fix Simple

Please do one by one! Your problem will be solved.
P.S. the mother board of One X is different with One XL. This Solution is for HTC ONE X ONLY!

1= 0,8 ohm
on another coil:
80k ohm

In my LCD i can't show anything... (No only backlight)

online-nokia · 07-11-2013, 22:36

Thanks, 220 changing works as well. problem solved.

schwederino · 07-12-2013, 22:49

Quote:

Originally Posted by Mobile Fix Simple

Hi mate, you can use multimeter to check the coils and ic whether they are good. In your case, please also check the LCD flex cable. Last time, a customer sent me a water damaged One X, had a similar problem like you, press the phone and the light keeps flashing. I had resoldered the backlight circuit of the LCD and works fine then.

My HTC One X also had a water damage.
Now the screen flickers from time to time (screen is distorted somehow) and often the backlight wont turn on.
If i apply pressure on the back of the (on certain areas) phone it starts to work again. Sometimes pressing the power button very often makes the backlight work too.
Could you please advise me what to do in detail!

Thanks in advance!

potier · 07-18-2013, 21:51

Hello All,

I´m facinng the same problem at my HOX with 18 months working here in Brazil.
I´m not finding anyone to repair it here, so I ask for foreign support.
Could anyone repair it for me?
Please send me a MP.

Thank you in advance

Evandro.

claudiucmy · 07-20-2013, 11:32

Quote:

Originally Posted by online-nokia

Thanks, 220 changing works as well. problem solved.

same proble,solve with 220,thank!!!

413kal · 07-25-2013, 16:52

Quote:

Originally Posted by Jack_OH

1= 0,8 ohm
on another coil:
80k ohm

In my LCD i can't show anything... (No only backlight)

Will this also fix my problem. The screen is blank even when plugged in. You can feel it vibrate when you plug it in and see the red LED light flashing. But when not plugged in its a blank screen you can't get it to power on at all.

urshobhit · 07-26-2013, 10:52

guys, anybody is here from india who can fix this kind of problem of my htc one x i am unable to find a guy who can do this in india , please help me.

mikimogo · 07-27-2013, 21:19

Hi has anyone done a step by step procedure to remedy the backlight problem with advice on temperature to releease surface mount component's.

salwansk · 07-29-2013, 08:51

my problem solved here .... thanks

setix12 · 08-02-2013, 12:29

Quote:

Originally Posted by salwansk

my problem solved here .... thanks

did you just replace 220 coil?

scorcci · 08-08-2013, 17:15

Hi Dear friends,
I am considering send my logic board overseas to someone who can fix it, is there anyone who can fix it and how much for it?
Thanks for your time and attention,

eMMMET · 08-19-2013, 17:14

First of all, thanks to everyone posting their solutions.

I have the backlight problem and I opened up my phone to check for loose connectors, but without success. I guess I need to change the 220. I've located it in the phone, but I don't know how to remove it to replace it with another one - do I need to solder? I have a spare 220 to replace it with from another broken One X.

I haven't done anything more complicated than replacing a battery or a screen before, so bear with me...

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06-19-2013, 12:22	#61 (permalink)
starXman Freak Poster Join Date: Jan 2005 Location: Portugal Age: 41 Posts: 322 Member: 111292 Status: Offline Thanks Meter: 66	Hi friends, i am having here one case, where the image flickers, and backlight cant turn on, only when mechanical pressure is applyed to phone, when i twist it or pressure it, image flickers and light goes off, and sometimes its hard to make it work again. You think i should just heat the coils and ic with paste flux?

06-24-2013, 16:49	#63 (permalink)
r473r Junior Member Join Date: Mar 2011 Location: Romania Posts: 8 Member: 1539894 Status: Offline Thanks Meter: 2	What value does the coil has to have to be working ? Can i check it while still on the board or do i have to de-solder it ? And last, how do i check the IC with the multimeter ? Thanks.

07-11-2013, 22:36	#65 (permalink)
online-nokia Freak Poster Join Date: Jan 2010 Age: 14 Posts: 410 Member: 1214273 Status: Offline Thanks Meter: 136	Thanks, 220 changing works as well. problem solved.

07-18-2013, 21:51	#67 (permalink)
potier Junior Member Join Date: Jul 2013 Posts: 2 Member: 1981572 Status: Offline Thanks Meter: 0	Hello All, I´m facinng the same problem at my HOX with 18 months working here in Brazil. I´m not finding anyone to repair it here, so I ask for foreign support. Could anyone repair it for me? Please send me a MP. Thank you in advance Evandro.

07-26-2013, 10:52	#70 (permalink)
urshobhit Junior Member Join Date: Oct 2008 Location: India Posts: 17 Member: 877153 Status: Offline Thanks Meter: 2	guys, anybody is here from india who can fix this kind of problem of my htc one x i am unable to find a guy who can do this in india , please help me.

07-27-2013, 21:19	#71 (permalink)
mikimogo Junior Member Join Date: Jul 2013 Location: Stoke-on-Trent. UK Posts: 3 Member: 1976611 Status: Offline Thanks Meter: 0	Hi has anyone done a step by step procedure to remedy the backlight problem with advice on temperature to releease surface mount component's.

07-29-2013, 08:51	#72 (permalink)
salwansk Insane Poster Join Date: Jan 2008 Posts: 72 Member: 671067 Status: Offline Thanks Meter: 13	my problem solved here .... thanks

08-08-2013, 17:15	#74 (permalink)
scorcci Crazy Poster Join Date: Oct 2011 Posts: 56 Member: 1670612 Status: Offline Thanks Meter: 5	Hi Dear friends, I am considering send my logic board overseas to someone who can fix it, is there anyone who can fix it and how much for it? Thanks for your time and attention,

08-19-2013, 17:14	#75 (permalink)
eMMMET Junior Member Join Date: Aug 2013 Posts: 1 Member: 2005705 Status: Offline Thanks Meter: 0	First of all, thanks to everyone posting their solutions. I have the backlight problem and I opened up my phone to check for loose connectors, but without success. I guess I need to change the 220. I've located it in the phone, but I don't know how to remove it to replace it with another one - do I need to solder? I have a spare 220 to replace it with from another broken One X. I haven't done anything more complicated than replacing a battery or a screen before, so bear with me...