C902 keypad trouble, key 2,5,C - GSM-Forum

colmania · 04-15-2009, 18:02

I have changed keypad but still when pressing 2 or 5 they both types at the same time.. also C erases two steps every step.
It worked under a shorter time when taking out motherboard and holding everything outside the phone but just a couple of times.

tornado2008 · 04-15-2009, 19:05

http://forum.gsmhosting.com/vbb/show...02#post4186382

colmania · 04-15-2009, 19:11

Ok! The schematics could work, but can anybody point me in the right direction where to start looking?

colmania · 04-15-2009, 19:48

Quote:

Originally Posted by tornado2008

http://forum.gsmhosting.com/vbb/show...02#post4186382

Btw, the link is misnamed, C902 schematic is C700 when downloading. So I did not get any help from that.

colmania · 06-03-2009, 22:58

I still have no solution for this.. keys C, 2 and 5 double presses everytime. Could this be flash ic trouble?

Anyone know where keypad ic is located so I can change it?

tanbogia · 07-17-2009, 04:57

take out sim cable,it will working normally!

eric.looi · 10-26-2009, 05:01

u have c902 schematic?? i show u that problem

colmania · 10-30-2009, 18:34

Quote:

Originally Posted by tanbogia

take out sim cable,it will working normally!

Yes that works! But how do we fix this problem? Is it CPU misbehaving?

floky · 12-29-2009, 17:38

Solution ! 100%

Check camera key .... dissasembel key and clean it up ... and it will work !

BR

mob-inter · 08-01-2010, 22:57

change the sim gate unit ,it will be ok.

aftabmiraj15 · 05-19-2011, 20:35

try to unplug the the flate of the simcard reader and try without it if it works or not.

sriharigold · 05-20-2011, 19:00

hi dear's,
Sony Ericsson s312 mic not work.
pls post jumper ways (pitcher)

thank s for everything

polini · 05-22-2011, 17:14

Solution ! 100%

Check camera key .... dissasembel key and clean it up ... and it will work !
lik floky br

04-15-2009, 18:02	#1 (permalink)
colmania Major Poster Join Date: Sep 2006 Location: Sweden, Östersund Posts: 41 Member: 351934 Status: Offline Thanks Meter: 2	C902 keypad trouble, key 2,5,C I have changed keypad but still when pressing 2 or 5 they both types at the same time.. also C erases two steps every step. It worked under a shorter time when taking out motherboard and holding everything outside the phone but just a couple of times.

05-20-2011, 19:00	#12 (permalink)
sriharigold Major Poster Join Date: Jul 2009 Location: coimbatore Posts: 47 Member: 1081243 Status: Offline Thanks Meter: 4	s312 mic not working hi dear's, Sony Ericsson s312 mic not work. pls post jumper ways (pitcher) thank s for everything

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04-15-2009, 19:05	#2 (permalink)
tornado2008 No Life Poster Join Date: Dec 2007 Location: egypt Posts: 873 Member: 648590 Status: Online Thanks Meter: 267	http://forum.gsmhosting.com/vbb/show...02#post4186382

04-15-2009, 19:11	#3 (permalink)
colmania Major Poster Join Date: Sep 2006 Location: Sweden, Östersund Posts: 41 Member: 351934 Status: Offline Thanks Meter: 2	Ok! The schematics could work, but can anybody point me in the right direction where to start looking?

06-03-2009, 22:58	#5 (permalink)
colmania Major Poster Join Date: Sep 2006 Location: Sweden, Östersund Posts: 41 Member: 351934 Status: Offline Thanks Meter: 2	I still have no solution for this.. keys C, 2 and 5 double presses everytime. Could this be flash ic trouble? Anyone know where keypad ic is located so I can change it?

07-17-2009, 04:57	#6 (permalink)
tanbogia Junior Member Join Date: Jan 2009 Posts: 4 Member: 945427 Status: Offline Sonork: 1234 Thanks Meter: 3	take out sim cable,it will working normally!

10-26-2009, 05:01	#7 (permalink)
eric.looi Junior Member Join Date: Jun 2009 Posts: 6 Member: 1049705 Status: Offline Thanks Meter: 1	u have c902 schematic?? i show u that problem

12-29-2009, 17:38	#9 (permalink)
floky Freak Poster Join Date: Dec 2004 Age: 54 Posts: 126 Member: 101911 Status: Offline Thanks Meter: 11	Solution ! 100% Check camera key .... dissasembel key and clean it up ... and it will work ! BR

08-01-2010, 22:57	#10 (permalink)
mob-inter Freak Poster Join Date: May 2005 Location: sheffield, uk Age: 49 Posts: 168 Member: 145732 Status: Offline Thanks Meter: 23	change the sim gate unit ,it will be ok.

05-19-2011, 20:35	#11 (permalink)
aftabmiraj15 Freak Poster Join Date: Apr 2011 Location: Spain Barcelona Posts: 109 Member: 1558861 Status: Offline Sonork: aftabmiraj15 Thanks Meter: 4	try to unplug the the flate of the simcard reader and try without it if it works or not.

05-22-2011, 17:14	#13 (permalink)
polini Junior Member Join Date: Apr 2007 Posts: 35 Member: 480547 Status: Offline Thanks Meter: 3	Solution ! 100% Check camera key .... dissasembel key and clean it up ... and it will work ! lik floky br