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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 04-15-2009, 18:02   #1 (permalink)
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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.
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Old 04-15-2009, 19:05   #2 (permalink)
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http://forum.gsmhosting.com/vbb/show...02#post4186382
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Old 04-15-2009, 19:11   #3 (permalink)
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Ok! The schematics could work, but can anybody point me in the right direction where to start looking?
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Old 04-15-2009, 19:48   #4 (permalink)
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Quote:
Originally Posted by tornado2008 View Post

Btw, the link is misnamed, C902 schematic is C700 when downloading. So I did not get any help from that.
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Old 06-03-2009, 22:58   #5 (permalink)
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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?
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Old 07-17-2009, 04:57   #6 (permalink)
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take out sim cable,it will working normally!
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Old 10-26-2009, 05:01   #7 (permalink)
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u have c902 schematic?? i show u that problem
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Old 10-30-2009, 18:34   #8 (permalink)
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Originally Posted by tanbogia View Post
take out sim cable,it will working normally!
Yes that works! But how do we fix this problem? Is it CPU misbehaving?
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Old 12-29-2009, 16:38   #9 (permalink)
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Solution ! 100%

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

BR
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Old 08-01-2010, 22:57   #10 (permalink)
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change the sim gate unit ,it will be ok.
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Old 05-19-2011, 20:35   #11 (permalink)
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try to unplug the the flate of the simcard reader and try without it if it works or not.
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Old 05-20-2011, 19:00   #12 (permalink)
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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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Old 05-22-2011, 17:14   #13 (permalink)
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Solution ! 100%

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