3310 LED Problem - GSM-Forum

fonetech · 01-30-2003, 22:13

I have a 3310 and the 4 led's directly under the screen stay on constantly as soon as you insert a battery, obviously this drains the battery

which chip needs to be changed to solve this ?????

or what is the solution, its already been through the water damage ultrasonic bath and that hasn't solved it

b0ba · 01-30-2003, 22:43

First check pin15 of the N400, should be 0V (if not then CPU or N400 or board is the problem).
Second measure the resistance of the R403. Should be 10k.
Third desolder pin13 of the N400. If lights still on then probably R407 is faulty.
Remove R407. If lights still on (with pin13 desoldered and R407 removed) then board is faulty. If lights went off then N400 or R407 is faulty. Remove R407 and solder back pin13 of the N400. If all ok leave it. If not chnage N400.

Regards

giannim · 04-09-2004, 12:50

Hi, I have a similar problem with a 3510i coming from a water fall.

I cleaned the phoe that works perfectly, only the 4 LEDs does not switch on.
I checked them and they are OK.

What can you suggest me?

Thanks a lot for your answer

Gianni

gosev · 04-09-2004, 13:41

See this http://www.decoder.wz.cz/

Gosev

mobile_care · 04-09-2004, 14:18

very nice wrok
thanx

01-30-2003, 22:13	#1 (permalink)
fonetech No Life Poster Join Date: Sep 2002 Posts: 898 Member: 15837 Status: Offline Thanks Meter: 2	3310 LED Problem I have a 3310 and the 4 led's directly under the screen stay on constantly as soon as you insert a battery, obviously this drains the battery which chip needs to be changed to solve this ????? or what is the solution, its already been through the water damage ultrasonic bath and that hasn't solved it

04-09-2004, 12:50	#3 (permalink)
giannim Junior Member Join Date: Jan 2004 Location: ITALY Age: 71 Posts: 27 Member: 48408 Status: Offline Thanks Meter: 0	3510i with LED problem Hi, I have a similar problem with a 3510i coming from a water fall. I cleaned the phoe that works perfectly, only the 4 LEDs does not switch on. I checked them and they are OK. What can you suggest me? Thanks a lot for your answer Gianni

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01-30-2003, 22:43	#2 (permalink)
b0ba No Life Poster Join Date: Oct 2001 Location: No route to host. Age: 44 Posts: 895 Member: 6772 Status: Offline Thanks Meter: 17	First check pin15 of the N400, should be 0V (if not then CPU or N400 or board is the problem). Second measure the resistance of the R403. Should be 10k. Third desolder pin13 of the N400. If lights still on then probably R407 is faulty. Remove R407. If lights still on (with pin13 desoldered and R407 removed) then board is faulty. If lights went off then N400 or R407 is faulty. Remove R407 and solder back pin13 of the N400. If all ok leave it. If not chnage N400. Regards

04-09-2004, 13:41	#4 (permalink)
gosev Freak Poster Join Date: Mar 2001 Posts: 326 Member: 3691 Status: Offline Thanks Meter: 6	See this http://www.decoder.wz.cz/ Gosev

04-09-2004, 14:18	#5 (permalink)
mobile_care Junior Member Join Date: Feb 2004 Age: 39 Posts: 31 Member: 53761 Status: Offline Thanks Meter: 0	very nice wrok thanx