6120 led..need urgent help - GSM-Forum

lahoot · 11-07-2007, 14:07

i hv nokia 6120 it has no led i also try to change lcd but in vein.no water damage no drope damage.any one help me through picture diagram
thnx in adv

lahoot · 11-15-2007, 08:43

i think no one knows about this problem..

djtommy · 11-23-2007, 16:12

i also got this problem, i have found that the diod beside betty ic cant supply current to the backlight enable transistor, then i change the diod then found the mother board is shorting about 0.20amp, i change the betty ic but still same result, anyone know what is going on?

djtommy · 11-24-2007, 07:01

1. change V2400 & V2401 ( PEMT1 )

2. change V2402 ( keylight enable transistor )

3. change N2300 ( BETTY IC )

change either one of the part your backlight will be come back...
if still not work then we have to ask for the one who design this product

cyahus2k · 01-08-2008, 18:04

just consult your schematics and it will be fine if you know how to measure voltages
that trigerring the LEds you will not go far in finding the deffective parts or broken lines..

Br,

Sandeep_$tomar · 01-08-2008, 19:08

change light ic and check coil

eiji 1198 · 08-11-2008, 10:29

Quote:

Originally Posted by Sandeep_$tomar

change light ic and check coil

can you show the pic where is the led ic?????????thank

twin army · 02-06-2009, 01:08

Hi. all nokia schematics below....

http://forum.gsmhosting.com/vbb/showthread.php?t=343644

jang_waheeda · 02-06-2009, 05:28

led ic is present under display connecter with coil and also check the coil and ic in the grill right side of them

11-07-2007, 14:07	#1 (permalink)
lahoot No Life Poster Join Date: Feb 2006 Location: In Heavan Posts: 1,056 Member: 229987 Status: Offline Sonork: 100.1602834 Thanks Meter: 193	6120 led..need urgent help i hv nokia 6120 it has no led i also try to change lcd but in vein.no water damage no drope damage.any one help me through picture diagram thnx in adv

11-24-2007, 07:01	#4 (permalink)
djtommy Insane Poster Join Date: May 2007 Location: K.Kinabalu, sabah Posts: 95 Member: 511560 Status: Offline Thanks Meter: 66	6120 no backlight solution 1. change V2400 & V2401 ( PEMT1 ) 2. change V2402 ( keylight enable transistor ) 3. change N2300 ( BETTY IC ) change either one of the part your backlight will be come back... if still not work then we have to ask for the one who design this product

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11-15-2007, 08:43	#2 (permalink)
lahoot No Life Poster Join Date: Feb 2006 Location: In Heavan Posts: 1,056 Member: 229987 Status: Offline Sonork: 100.1602834 Thanks Meter: 193	i think no one knows about this problem..

11-23-2007, 16:12	#3 (permalink)
djtommy Insane Poster Join Date: May 2007 Location: K.Kinabalu, sabah Posts: 95 Member: 511560 Status: Offline Thanks Meter: 66	i also got this problem, i have found that the diod beside betty ic cant supply current to the backlight enable transistor, then i change the diod then found the mother board is shorting about 0.20amp, i change the betty ic but still same result, anyone know what is going on?

01-08-2008, 18:04	#5 (permalink)
cyahus2k Freak Poster Join Date: Dec 2003 Location: Singapore Age: 47 Posts: 110 Member: 45377 Status: Offline Thanks Meter: 1	just consult your schematics and it will be fine if you know how to measure voltages that trigerring the LEds you will not go far in finding the deffective parts or broken lines.. Br,

01-08-2008, 19:08	#6 (permalink)
Sandeep_$tomar Freak Poster Join Date: Apr 2007 Location: Gwalior (MP) India Age: 36 Posts: 120 Member: 480959 Status: Offline Thanks Meter: 49	change light ic and check coil

02-06-2009, 01:08	#8 (permalink)
twin army No Life Poster Join Date: Aug 2006 Posts: 861 Member: 331337 Status: Offline Thanks Meter: 72	Hi. all nokia schematics below.... http://forum.gsmhosting.com/vbb/showthread.php?t=343644

02-06-2009, 05:28	#9 (permalink)
jang_waheeda Junior Member Join Date: Feb 2009 Posts: 7 Member: 964451 Status: Offline Thanks Meter: 0	led ic is present under display connecter with coil and also check the coil and ic in the grill right side of them