URGENT c905 Yes & Upper Volume Button Not Working - GSM-Forum

deann · 12-18-2010, 16:45

Hi... Need Help With C905 Problem Yes & Upper Volume Key Not Working, Already Change Center Flex, UIb Flex & Check Volume & Camera Swicth But Same Result.
T.I.A...

pavithra_uk · 12-20-2010, 06:31

did you check the EMI filter IC ? (known as keypad ic)

deann · 12-20-2010, 10:47

Quote:

Originally Posted by pavithra_uk

did you check the EMI filter IC ? (known as keypad ic)

No Bro, Can You Post Pic Where Locate This EMI filter IC ? (known as keypad ic)

T.I.A

pavithra_uk · 12-20-2010, 12:53

sorry. there is no keypad ic for c905. there are ESD protection diodes for keys. wait until I can find and post photo. OR

Get C905 schematic or service manual.

and check these ESD Diodes : V2474, V2478 (check for short)

if shorted, remove these diodes and check.

deann · 12-20-2010, 15:54

Quote:

Originally Posted by pavithra_uk

sorry. there is no keypad ic for c905. there are ESD protection diodes for keys. wait until I can find and post photo. OR

Get C905 schematic or service manual.

and check these ESD Diodes : V2474, V2478 (check for short)

if shorted, remove these diodes and check.

Will Wait, Hope its Very soon... Thank

baraka42 · 12-20-2010, 18:58

Quote:

Originally Posted by deann

No Bro, Can You Post Pic Where Locate This EMI filter IC ? (known as keypad ic)

T.I.A

this may help you ?

wbr

pavithra_uk · 12-21-2010, 04:54

Quote:

Originally Posted by baraka42

this may help you ?

wbr

yeah thats it. check these two diodes and post your results.

deann · 12-21-2010, 11:44

Quote:

Originally Posted by pavithra_uk

yeah thats it. check these two diodes and post your results.

Ok bro, i will check it & post result....

deann · 12-30-2010, 09:16

Quote:

Originally Posted by baraka42

this may help you ?

wbr

Yes Working.... This Is 100% Solution...http://forum.gsmhosting.com/vbb/atta...0&d=1292867882

THANK MR BARAKA

12-18-2010, 16:45	#1 (permalink)
deann Freak Poster Join Date: May 2008 Location: The Time Has Come.... Posts: 493 Member: 765331 Status: Offline Thanks Meter: 78	URGENT c905 Yes & Upper Volume Button Not Working Hi... Need Help With C905 Problem Yes & Upper Volume Key Not Working, Already Change Center Flex, UIb Flex & Check Volume & Camera Swicth But Same Result. T.I.A...

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12-20-2010, 06:31	#2 (permalink)
pavithra_uk Freak Poster Join Date: Oct 2009 Location: Sri Lanka Age: 39 Posts: 153 Member: 1142667 Status: Offline Thanks Meter: 16	did you check the EMI filter IC ? (known as keypad ic)

12-20-2010, 12:53	#4 (permalink)
pavithra_uk Freak Poster Join Date: Oct 2009 Location: Sri Lanka Age: 39 Posts: 153 Member: 1142667 Status: Offline Thanks Meter: 16	sorry. there is no keypad ic for c905. there are ESD protection diodes for keys. wait until I can find and post photo. OR Get C905 schematic or service manual. and check these ESD Diodes : V2474, V2478 (check for short) if shorted, remove these diodes and check.