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Sony Ericsson Hardware Repair Post here your Hardware Repairing Hints or Problems with SonyEricsson and Sony Phones. |
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12-29-2005, 23:23 | #1 (permalink) |
Freak Poster Join Date: Oct 2005
Posts: 384
Member: 191662 Status: Offline Thanks Meter: 2 | K750i backlight/screen light does not light up Can use the phone but screen light does not light up!! Anyone got a solution to this problem???? THANX IN ADVANCE |
05-12-2006, 09:13 | #5 (permalink) |
Junior Member Join Date: May 2006
Posts: 7
Member: 275109 Status: Offline Thanks Meter: 0 | hello.. i just had the same thing happen with the backlight on my k750i today. bought the phone on ebay about 3 weeks ago. the thing was perfect.. not a scratch. after not using the phone in ANY adverse conditions, today, i picked up the phone and the backlight would not come on. i turned off the phone and turned it back on.. the light came on, but only until it went to sleep. then it would not come back. after that, even turning it off and back on again, the backlight would not come on. I've taken the phone apart and can not find anything fishy looking around the LCD connector.. nothing obvious anyways. any expert opinions?? |
05-14-2006, 01:05 | #7 (permalink) |
Freak Poster Join Date: Jun 2004
Posts: 140
Member: 68105 Status: Offline Thanks Meter: 7 | Why did you schemtics...change only LED driver ..........you can use a a 6230/K700 LED driver...works fine http://forum.gsmhosting.com/vbb/show...70&postcount=6 |
05-15-2006, 22:49 | #8 (permalink) |
Junior Member Join Date: May 2006
Posts: 7
Member: 275109 Status: Offline Thanks Meter: 0 | "display connector or dcdc converter" 1. what is a dcdc converter? 2. are you saying that these are the probable causes of the problem? 3. is it not possible that the LCD itself is broken? |
05-18-2006, 22:46 | #11 (permalink) | |
Freak Poster Join Date: Jun 2004
Posts: 140
Member: 68105 Status: Offline Thanks Meter: 7 | Quote:
No........................ | |
05-27-2006, 20:49 | #12 (permalink) |
Junior Member Join Date: May 2006
Posts: 7
Member: 275109 Status: Offline Thanks Meter: 0 | you were right, changing the lcd didn't work. so which option would you reccomend i try first, changing the LED driver, or soldering a new connection by the LCD connector? (i assume that picture above is of the LCD connector) |
06-23-2006, 18:17 | #13 (permalink) | |
No Life Poster Join Date: Oct 2002 Location: Shenzhen China Age: 68
Posts: 1,074
Member: 16350 Status: Offline Sonork: 110823 Thanks Meter: 42 | Quote:
*** bless you're post sir as i just tested on water damage phone and i can say that on this first ocasion the solution is 100% ... Thanks and pls do me another favor and tell me how that u manage to comprehend this problem?? br | |
06-24-2006, 17:28 | #14 (permalink) |
Junior Member Join Date: May 2006
Posts: 7
Member: 275109 Status: Offline Thanks Meter: 0 | opo, good to hear someone has done this with success! if you would, could you please say: 1. how you obtained a replacement LED driver? 2. how did you install it? I would VERY much appreciate knowing this. thanks. |
07-01-2006, 12:44 | #15 (permalink) |
Junior Member Join Date: Jun 2006
Posts: 1
Member: 298984 Status: Offline Thanks Meter: 0 | I have the same issue my backlight for LCD is no longer working after replacing my camera and putting back together. copper clips are both in place. I did manage to get it lighting up at one point but even when it was it was super bright and you could not adujst the brightness in the menu. Now I can no longer get the backlight on at all. Not sure if I am having the same LED driver issue or not. If so the soldering looks a little to fiddly for me. Any other ideas? |
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