LED not working - GSM-Forum

Nataraj · 05-06-2003, 14:10

LEDs of my 3510i are not working. It was water damage, Cleaned phone, Flashed phone, not solved

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[GLOW=red]moved from Phone Unlocking Codes & Maps[/GLOW]

willy · 05-06-2003, 19:03

HI,,

that LED of 3510 at LCD side, control by UEMat Dlight (F3/F5), and you have to check from UEM to R306 and also R307 (VB+) and V320 and.......line cut

Willy

giannim · 03-22-2004, 13:20

Hi Willy,

I have the same problem, a 3510i with no working leds. I checked them and they are good but no light on display and keyboard.

Can you suggest me step by step how to proceed for detecting and repair this fault.

The phone was water fallen but I chaged the display and is working fine.

Thanks

Gianni

c0c0 · 03-23-2004, 16:13

go in links section and there is a post with repair pictures and you will find what you need

Own · 03-25-2004, 08:38

you just knowledge about LED have 2 circuit all use pararell led and anode from led want volt bias from +b from battery and kathode want volt control from N400[at leg 9-15] please find in schematic diagram
BR
Own

Own · 03-25-2004, 08:43

and volt control led come from CPU at leg 7-15[N400 to leg C12[CPU]if not have volt control from CPU it all cant work for LED
but normaly please check line circuit LED only
BR
Own

Own · 03-25-2004, 08:46

oh i hang again
i told about 3310or 3350
all sorry
BR
Own

i will try by schematic again

moobile mafia · 09-19-2004, 19:51

hi guys
i have changed r 306 307 but result is no lights what i do now tell plz explain with with diagram

gsm goa · 06-15-2007, 08:43

sir, i have got 3510i its come for no display light and not charging pl let me know on my id [email protected]

boyagot · 06-15-2007, 09:16

try this my friend

and keep up the good work

don't forget to say thanks!

05-06-2003, 14:10	#1 (permalink)
Nataraj Junior Member Join Date: Sep 2002 Location: AL Ahsa Age: 48 Posts: 6 Member: 15417 Status: Offline Thanks Meter: 1	LED not working LEDs of my 3510i are not working. It was water damage, Cleaned phone, Flashed phone, not solved ------------------------------------------------------ [GLOW=red]moved from Phone Unlocking Codes & Maps[/GLOW]

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05-06-2003, 19:03	#2 (permalink)
willy No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58 Posts: 1,677 Member: 1060 Status: Offline Thanks Meter: 10	HI,, that LED of 3510 at LCD side, control by UEMat Dlight (F3/F5), and you have to check from UEM to R306 and also R307 (VB+) and V320 and.......line cut Willy

03-22-2004, 13:20	#3 (permalink)
giannim Junior Member Join Date: Jan 2004 Location: ITALY Age: 71 Posts: 27 Member: 48408 Status: Offline Thanks Meter: 0	Hi Willy, I have the same problem, a 3510i with no working leds. I checked them and they are good but no light on display and keyboard. Can you suggest me step by step how to proceed for detecting and repair this fault. The phone was water fallen but I chaged the display and is working fine. Thanks Gianni

03-23-2004, 16:13	#4 (permalink)
c0c0 No Life Poster Join Date: Nov 2002 Location: Romania Age: 41 Posts: 753 Member: 17740 Status: Offline Thanks Meter: 1	go in links section and there is a post with repair pictures and you will find what you need

03-25-2004, 08:38	#5 (permalink)
Own No Life Poster Join Date: Aug 2001 Location: Minsk Russia Posts: 915 Member: 5569 Status: Offline Thanks Meter: 10	you just knowledge about LED have 2 circuit all use pararell led and anode from led want volt bias from +b from battery and kathode want volt control from N400[at leg 9-15] please find in schematic diagram BR Own

03-25-2004, 08:43	#6 (permalink)
Own No Life Poster Join Date: Aug 2001 Location: Minsk Russia Posts: 915 Member: 5569 Status: Offline Thanks Meter: 10	and volt control led come from CPU at leg 7-15[N400 to leg C12[CPU]if not have volt control from CPU it all cant work for LED but normaly please check line circuit LED only BR Own

03-25-2004, 08:46	#7 (permalink)
Own No Life Poster Join Date: Aug 2001 Location: Minsk Russia Posts: 915 Member: 5569 Status: Offline Thanks Meter: 10	oh i hang again i told about 3310or 3350 all sorry BR Own i will try by schematic again

09-19-2004, 19:51	#8 (permalink)
moobile mafia Insane Poster Join Date: Aug 2004 Age: 43 Posts: 60 Member: 79647 Status: Offline Thanks Meter: 1	hi guys i have changed r 306 307 but result is no lights what i do now tell plz explain with with diagram

06-15-2007, 08:43	#9 (permalink)
gsm goa Freak Poster Join Date: Aug 2005 Location: goa india calangute Age: 46 Posts: 161 Member: 169626 Status: Offline Sonork: 100.1590561 Thanks Meter: 104	sir, i have got 3510i its come for no display light and not charging pl let me know on my id [email protected]