k700 backlight - GSM-Forum

ozy · 06-20-2005, 15:23

got a water damaged k700i all working ok now except no backlight on lcd.
lcd works fine in another unit,so fault is on main pcb.any solution to this problem or schematics for this area would be appreciated.

malcomxyz · 06-25-2005, 15:54

try this........

mobilesmith · 06-29-2005, 13:32

Quote:

Originally Posted by malcomxyz

try this........

Great Job...................................! Mate

MBtech · 06-29-2005, 14:21

Good pic
Can any1 translate for us what they say here

genocite · 06-30-2005, 14:49

can anyone just tell me what language is that ?

mobilesmith · 07-01-2005, 13:27

Hi. all. i also don't understand what description is.. but from the pic shown that if u cant find that ic, u may remove two components from other m/board then place to k700 by modify the circuit..

ozy · 07-01-2005, 15:33

yep you need to mod main pcb as in diagram by adding the 2 transistors and remove led driver ic,and also mod the display led's and put them in parallel as normally they are in series and remove the diode from led board.

genocite · 07-01-2005, 19:19

anybody has tested this and got the same light with original led driver ic ?

mobilesmith · 07-05-2005, 06:38

Hi. all. anybody who has tested on this method, pls post ur result.... TQ

platy · 09-16-2005, 12:31

Hey man,
works perfect! Today i repaired 2pcs with this solution, both was water damaged.
It is little big difficult, but works!
But third K700 i have here doesnt accept this solution

MAybe there are more fu*ked spares then only those bga...

Platy

inat · 12-11-2005, 10:03

Quote:

Originally Posted by mobilesmith

Great Job...................................! Mate

look like ******, any english version???

D2NICE · 12-12-2005, 16:58

first try remove and replace the same driver ic...

otherwise replace..

selmanx · 12-12-2005, 17:58

good pic big thank !

sdr · 01-21-2006, 13:18

Works perfectly ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

opo · 02-09-2006, 15:16

Thanks for this nice modif ....
10+ for this nice discovery ...

06-20-2005, 15:23	#1 (permalink)
ozy Freak Poster Join Date: Sep 2002 Location: Aussie Age: 54 Posts: 370 Member: 15355 Status: Offline Thanks Meter: 4	k700 backlight got a water damaged k700i all working ok now except no backlight on lcd. lcd works fine in another unit,so fault is on main pcb.any solution to this problem or schematics for this area would be appreciated.

06-29-2005, 14:21	#4 (permalink)
MBtech Freak Poster Join Date: Apr 2005 Age: 43 Posts: 448 Member: 138234 Status: Offline Thanks Meter: 79	K700i backlight Good pic Can any1 translate for us what they say here

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06-25-2005, 15:54	#2 (permalink)
malcomxyz Freak Poster Join Date: Jun 2004 Posts: 140 Member: 68105 Status: Offline Thanks Meter: 7	try this........

06-30-2005, 14:49	#5 (permalink)
genocite No Life Poster Join Date: Jul 2001 Location: md Age: 25 Posts: 761 Member: 5379 Status: Offline Thanks Meter: 0	can anyone just tell me what language is that ?

07-01-2005, 13:27	#6 (permalink)
mobilesmith Freak Poster Join Date: Feb 2005 Location: mal Age: 46 Posts: 348 Member: 117968 Status: Offline Thanks Meter: 27	Hi. all. i also don't understand what description is.. but from the pic shown that if u cant find that ic, u may remove two components from other m/board then place to k700 by modify the circuit..

07-01-2005, 15:33	#7 (permalink)
ozy Freak Poster Join Date: Sep 2002 Location: Aussie Age: 54 Posts: 370 Member: 15355 Status: Offline Thanks Meter: 4	yep you need to mod main pcb as in diagram by adding the 2 transistors and remove led driver ic,and also mod the display led's and put them in parallel as normally they are in series and remove the diode from led board.

07-01-2005, 19:19	#8 (permalink)
genocite No Life Poster Join Date: Jul 2001 Location: md Age: 25 Posts: 761 Member: 5379 Status: Offline Thanks Meter: 0	anybody has tested this and got the same light with original led driver ic ?

07-05-2005, 06:38	#9 (permalink)
mobilesmith Freak Poster Join Date: Feb 2005 Location: mal Age: 46 Posts: 348 Member: 117968 Status: Offline Thanks Meter: 27	Hi. all. anybody who has tested on this method, pls post ur result.... TQ

09-16-2005, 12:31	#10 (permalink)
platy Freak Poster Join Date: Mar 2001 Location: Czech Republic Posts: 295 Member: 3714 Status: Offline Thanks Meter: 6	Hey man, works perfect! Today i repaired 2pcs with this solution, both was water damaged. It is little big difficult, but works! But third K700 i have here doesnt accept this solution MAybe there are more fu*ked spares then only those bga... Platy

12-12-2005, 16:58	#12 (permalink)
D2NICE Freak Poster Join Date: Mar 2004 Location: nEvErMind Age: 42 Posts: 108 Member: 56732 Status: Offline Thanks Meter: 9	first try remove and replace the same driver ic... otherwise replace..

12-12-2005, 17:58	#13 (permalink)
selmanx Junior Member Join Date: Dec 2005 Location: hot car Posts: 3 Member: 207842 Status: Offline Thanks Meter: 0	good pic big thank !

01-21-2006, 13:18	#14 (permalink)
sdr No Life Poster Join Date: Mar 2003 Location: Romania Brasov Age: 46 Posts: 659 Member: 25136 Status: Offline Sonork: 1591036 Thanks Meter: 54	Works perfectly ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

02-09-2006, 15:16	#15 (permalink)
opo No Life Poster Join Date: Oct 2002 Location: Shenzhen China Age: 68 Posts: 1,074 Member: 16350 Status: Offline Sonork: 110823 Thanks Meter: 42	Thanks for this nice modif .... 10+ for this nice discovery ...