3310 Keypad working madly - GSM-Forum

.:::Dr. Cell:::. · 06-29-2004, 16:38

Hi i have a 3310 on which when i press menu button it presses * and when press 1 it presses 2 and same fault with all the buttons.i ve changed its keypad ic but still same fault. i also rehoted its flash but not working. plz tell me the solution

DeltaGSM · 06-29-2004, 16:47

that's CPU problem,
try reflow first, if still change CPU.

regards

GSM Coolhawk · 07-05-2004, 01:23

@Minhas

I presume that you have changed LEDS on this phone ! Am I right ?

This fault when one key is pressed, and another shows up in the display is that when you changed the LEDS, you have shorted out some resistors which is in the keypad interface.

Check very carefully according to service manual the following resistors : R414 and R415, also check V415. One of those is properly shorted with some solder, or maybe it's damaged/cracked missing. Check under miccroscope if you can.

Regards

thecult · 07-06-2004, 14:46

80% cpu problem

but I remember one time, it was soft problems, and flashing was solved, I don't know why, but you don't lose nothing if you try

regards

Unggul · 07-10-2004, 19:15

I agree that CPU problem, not UI Ic's, not Flash Ic's

06-29-2004, 16:38	#1 (permalink)
.:::Dr. Cell:::. Freak Poster Join Date: Jan 2004 Location: Islamabad, Pakistan Age: 42 Posts: 295 Member: 48857 Status: Offline Thanks Meter: 31	3310 Keypad working madly Hi i have a 3310 on which when i press menu button it presses * and when press 1 it presses 2 and same fault with all the buttons.i ve changed its keypad ic but still same fault. i also rehoted its flash but not working. plz tell me the solution

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06-29-2004, 16:47	#2 (permalink)
DeltaGSM No Life Poster Join Date: May 2004 Location: Bandung-Flasher.com Posts: 1,118 Member: 65947 Status: Offline Thanks Meter: 135	that's CPU problem, try reflow first, if still change CPU. regards

07-05-2004, 01:23	#3 (permalink)
GSM Coolhawk No Life Poster Join Date: Dec 2001 Location: United Arab Emirates, Dubai Age: 52 Posts: 1,269 Member: 7751 Status: Offline Thanks Meter: 74	@Minhas I presume that you have changed LEDS on this phone ! Am I right ? This fault when one key is pressed, and another shows up in the display is that when you changed the LEDS, you have shorted out some resistors which is in the keypad interface. Check very carefully according to service manual the following resistors : R414 and R415, also check V415. One of those is properly shorted with some solder, or maybe it's damaged/cracked missing. Check under miccroscope if you can. Regards

07-06-2004, 14:46	#4 (permalink)
thecult No Life Poster Join Date: Feb 2002 Location: burning phones Posts: 1,704 Member: 9700 Status: Offline Thanks Meter: 62	80% cpu problem but I remember one time, it was soft problems, and flashing was solved, I don't know why, but you don't lose nothing if you try regards

07-10-2004, 19:15	#5 (permalink)
Unggul No Life Poster Join Date: Jul 2004 Location: Bandung - West Java, Indonesia Age: 43 Posts: 501 Member: 71273 Status: Offline Thanks Meter: 14	I agree that CPU problem, not UI Ic's, not Flash Ic's