K750 LCD Backlight - GSM-Forum

sia_26 · 01-08-2008, 16:33

Hi.
I got a problem with a K750. My lcd backlight doesn't work. I've seen that many people have had the same problem. I do know that the LCD is working, because I tested it on a W800 too, and I have tested the K750 with an another display also. I have flashed it too, and put new LCD drivers, but nothing seems to work.

If you have had the same problem, and came to a solution, PLEASE post it here, so I can get it work.

BTW, I'm not so good at schematics, but if it is a must, please post it, and if you can, describe the process.

Thanks in advance,
Sia.

sia_26 · 01-14-2008, 16:53

Does anybody know the solution!!!

Speed_Demon · 01-19-2008, 11:40

use the search function

Papa Sol · 01-19-2008, 12:36

Here is k750 Light solution.

Hope may help you.

ALWAYS!

debeliamark · 01-20-2008, 12:02

Quote:

Originally Posted by sia_26

Does anybody know the solution!!!

You must measure output voltage from L2530 / placed under cover of BT area - SIM side / and check it to C2578 / wired to pin 19 from LCD conector - other PCB side / - this is a LCD backlight line...

vinkle · 01-21-2008, 06:35

try this bro...and post result

jigc · 03-15-2008, 12:13

guys,

i removed the casing and pcb to repair the joystick.
but after i assembled them back, the backlight didn't lit any more.
i tried to dismantled and assembled for a few time, but it still didt work.
could anyone advice me on this?

regards

Speed_Demon · 03-16-2008, 11:11

Quote:

Originally Posted by jigc

guys,

i removed the casing and pcb to repair the joystick.
but after i assembled them back, the backlight didn't lit any more.
i tried to dismantled and assembled for a few time, but it still didt work.
could anyone advice me on this?

regards

Try other LCD, maybe u tore the lcd flex

01-08-2008, 16:33	#1 (permalink)
sia_26 Freak Poster Join Date: May 2007 Location: Sweden Age: 32 Posts: 133 Member: 502117 Status: Offline Thanks Meter: 6	K750 LCD Backlight Hi. I got a problem with a K750. My lcd backlight doesn't work. I've seen that many people have had the same problem. I do know that the LCD is working, because I tested it on a W800 too, and I have tested the K750 with an another display also. I have flashed it too, and put new LCD drivers, but nothing seems to work. If you have had the same problem, and came to a solution, PLEASE post it here, so I can get it work. BTW, I'm not so good at schematics, but if it is a must, please post it, and if you can, describe the process. Thanks in advance, Sia.

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01-14-2008, 16:53	#2 (permalink)
sia_26 Freak Poster Join Date: May 2007 Location: Sweden Age: 32 Posts: 133 Member: 502117 Status: Offline Thanks Meter: 6	Does anybody know the solution!!!

01-19-2008, 11:40	#3 (permalink)
Speed_Demon Freak Poster Join Date: Mar 2006 Location: In a house Age: 46 Posts: 466 Member: 249757 Status: Offline Sonork: 100.1601084 Thanks Meter: 117	use the search function

01-19-2008, 12:36	#4 (permalink)
Papa Sol Freak Poster Join Date: Nov 2006 Posts: 166 Member: 396638 Status: Offline Thanks Meter: 6	Here is k750 Light solution. Hope may help you. ALWAYS!

03-15-2008, 12:13	#7 (permalink)
jigc Junior Member Join Date: Apr 2007 Posts: 1 Member: 483513 Status: Offline Thanks Meter: 0	guys, i removed the casing and pcb to repair the joystick. but after i assembled them back, the backlight didn't lit any more. i tried to dismantled and assembled for a few time, but it still didt work. could anyone advice me on this? regards