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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Sony Ericsson > Sony Ericsson Hardware Repair

Sony Ericsson Hardware Repair Post here your Hardware Repairing Hints or Problems with SonyEricsson and Sony Phones.

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Old 06-18-2009, 23:02   #1 (permalink)
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c905 BACK LIGHT PROBLEM


Hi
i have got a c905 with no back light,
it came in with top right key problem, i changed the flex,
with the new flex,soon as i put the battety in, top keypad light came on, so dissambled it again and tried the original flex in it but now i have got no back light,
i've tried this flex, top keybordm and lcd on another pcb. They work fine,
any sugesstions please
thanks
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Old 06-19-2009, 20:56   #2 (permalink)
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Hmmmmm............
Looks like no one has got this solution
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Old 06-26-2009, 19:49   #3 (permalink)
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now i have got another one with no lcd light
i have checked connectors, grips are closed properly
everything works but no lcd light.
please any expert has solution for it
thanks
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Old 08-27-2009, 15:02   #4 (permalink)
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Quote:
Originally Posted by chowdary View Post
now i have got another one with no lcd light
i have checked connectors, grips are closed properly
everything works but no lcd light.
please any expert has solution for it
thanks
i have same problem anyone have any ideea???
br
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Old 09-03-2009, 01:08   #5 (permalink)
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i have same problem too
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Old 09-03-2009, 01:22   #6 (permalink)
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also encountered this problem i replace ribbon twice still no back light at LCD

anyone has a solution please

TIA
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Old 09-03-2009, 13:15   #7 (permalink)
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this problem due to LCD light control IC.
when the phone a while u can feel the CPU hot.
but how to fix i got no idea.
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Old 09-03-2009, 19:14   #8 (permalink)
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100% solve u r problem
i put 2k2 coil from n73 bord 100000% work change also diode from p910 bord
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Old 01-28-2010, 18:31   #9 (permalink)
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Quote:
Originally Posted by indiatel View Post
100% solve u r problem
i put 2k2 coil from n73 bord 100000% work change also diode from p910 bord

listen boss,which board is in your picture,cant get it n73 or c905 ,i put it all the way cant undrstand,can u tell me thnks in advance
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Old 02-03-2010, 10:07   #10 (permalink)
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Quote:
Originally Posted by indiatel View Post
100% solve u r problem
i put 2k2 coil from n73 bord 100000% work change also diode from p910 bord
Yes! Goog solution, mann! It's working. I use the coil near from the big camera connector from N73 board. B.R.!
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Old 02-04-2010, 13:31   #11 (permalink)
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please help no lcd light in c 905
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Old 02-04-2010, 13:34   #12 (permalink)
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i solved this by getting light coil... diode... caps.... from k850 board

try i tested with 3 sets..
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Old 05-14-2011, 10:57   #13 (permalink)
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i have one c905 no display back light ..........
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