nokia 3310 permanent led LCD ?PLEASE - GSM-Forum

eng.hamdow · 06-14-2005, 08:59

Please
" Permanent Led Lcd " In Nokia 3310
Any Idea ,please

HP-King · 06-14-2005, 14:31

can u tell me for detail plz. i can understand what do u mean

eng.hamdow · 06-14-2005, 22:07

Quote:

Originally Posted by HP-King

can u tell me for detail plz. i can understand what do u mean

............................
hello
all leds of phone always turn on & display always turn on

Steamroller · 06-14-2005, 22:44

check near UI (user interface integrated circuit) for liquid damage!
there are one resistor for lcd leds and one R for keypad leds ,the resistor is there to set brightness of leds (leds are commanded by UI through negative line,leds are always connected to +).By liquid damage the resistor or under it is a short circuit to ground so leds are always connected to ground (and + by default) and always ON!
Just remove resistor and clean PCB (R407 for keypad and R406 for lcd) and leds will work as NEW !
BR

Steamroller · 06-14-2005, 23:20

maybe this will help too

ANoNYMoUS_1 · 06-14-2005, 23:27

it may be water damage, remove R407

06-14-2005, 08:59	#1 (permalink)
eng.hamdow Freak Poster Join Date: Oct 2004 Age: 54 Posts: 165 Member: 84648 Status: Offline Thanks Meter: 3	nokia 3310 permanent led LCD ?PLEASE Please " Permanent Led Lcd " In Nokia 3310 Any Idea ,please

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06-14-2005, 14:31	#2 (permalink)
HP-King Insane Poster Join Date: Apr 2005 Location: Medan-Indonesia Age: 46 Posts: 81 Member: 137686 Status: Offline Thanks Meter: 3	can u tell me for detail plz. i can understand what do u mean

06-14-2005, 22:44	#4 (permalink)
Steamroller Freak Poster Join Date: Mar 2005 Location: Ro Age: 43 Posts: 260 Member: 126197 Status: Offline Thanks Meter: 26	check near UI (user interface integrated circuit) for liquid damage! there are one resistor for lcd leds and one R for keypad leds ,the resistor is there to set brightness of leds (leds are commanded by UI through negative line,leds are always connected to +).By liquid damage the resistor or under it is a short circuit to ground so leds are always connected to ground (and + by default) and always ON! Just remove resistor and clean PCB (R407 for keypad and R406 for lcd) and leds will work as NEW ! BR

06-14-2005, 23:27	#6 (permalink)
ANoNYMoUS_1 Freak Poster Join Date: Jun 2005 Age: 41 Posts: 282 Member: 153299 Status: Offline Thanks Meter: 59	it may be water damage, remove R407