3310 "4,7,*" keys not working! - GSM-Forum

MC Harami · 11-16-2004, 02:03

my keys on my 3310 are not working 4,7 and * all dont work and i have try changing the keypad but still no luck?

taihv · 11-16-2004, 03:31

Check the line beetween keys 1,4,7,*, maybe it shortcuted, if not, check ur CPU pls, maybe it unsoldered or damaged!
Regard

junc · 11-16-2004, 09:14

Place a jump wire to connect the outer circles of numbers 1 & 4.

I hope it would help you solve your problem!!!

MC Harami · 11-16-2004, 11:42

how do i check if the line is broken because looking at the keys i cant see no lines? Also is good to re-flow the CPU instead of changing it?

shawgsm · 11-16-2004, 14:27

below the keypad light there are two transistor which have five pins, on the upper part replace that one,maybe this could solve your problem

junc · 11-17-2004, 03:35

Quote:

Originally Posted by MC Harami

how do i check if the line is broken because looking at the keys i cant see no lines? Also is good to re-flow the CPU instead of changing it?

No, You might just damage the unit especially if it's sealed, don't touch/re-flow the CPU, there's no need coz you only got a broken line. Just place a thin wire from the outer circles of numbers 1 & 4. As you have said, only 4,7 & * keys are not working, and since the outer circles of 1, 4, 7, * & clear keys must all be connected, the working number 1 being the closest must be bridged to the non working number 4 (outer circles).

I'm sure this would help!!!
Junc

11-16-2004, 02:03	#1 (permalink)
MC Harami No Life Poster Join Date: Jan 2004 Location: Peh Bhooti, Pakistan Age: 41 Posts: 673 Member: 49896 Status: Offline Thanks Meter: 14	*3310 "4,7," keys not working!** my keys on my 3310 are not working 4,7 and * all dont work and i have try changing the keypad but still no luck?

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11-16-2004, 03:31	#2 (permalink)
taihv Registered User Join Date: Oct 2003 Location: Vietnam Age: 47 Posts: 963 Member: 40808 Status: Offline Thanks Meter: 10	Check the line beetween keys 1,4,7,*, maybe it shortcuted, if not, check ur CPU pls, maybe it unsoldered or damaged! Regard

11-16-2004, 09:14	#3 (permalink)
junc Junior Member Join Date: Jul 2003 Posts: 16 Member: 35245 Status: Offline Thanks Meter: 3	Place a jump wire to connect the outer circles of numbers 1 & 4. I hope it would help you solve your problem!!!

11-16-2004, 11:42	#4 (permalink)
MC Harami No Life Poster Join Date: Jan 2004 Location: Peh Bhooti, Pakistan Age: 41 Posts: 673 Member: 49896 Status: Offline Thanks Meter: 14	how do i check if the line is broken because looking at the keys i cant see no lines? Also is good to re-flow the CPU instead of changing it?

11-16-2004, 14:27	#5 (permalink)
shawgsm No Life Poster Join Date: Jan 2004 Location: United States Posts: 1,988 Member: 51453 Status: Offline Thanks Meter: 729	below the keypad light there are two transistor which have five pins, on the upper part replace that one,maybe this could solve your problem