3310 switching 4 lights only - GSM-Forum

tawanda · 01-14-2005, 20:01

pliz i have 3310 that only swicthes 4 bottom lights only and does not switch on tried to clean and rehot the pcb and also flashing but could not help pliz can you give me the solution

tawanda

tanucu04 · 01-14-2005, 20:53

You must change led's driver.

magixian · 01-14-2005, 22:01

Quote:

Originally Posted by tawanda

pliz i have 3310 that only swicthes 4 bottom lights only and does not switch on tried to clean and rehot the pcb and also flashing but could not help pliz can you give me the solution

tawanda

DEAR, all you have to do is bridge the led to N400 depending on which is not comming on.

i suggest you get 3310 Repair Guide 2004 by our brother Ben Ahmed (yassinov)

the led is a minor work so use pcd diagram!

baraka42 · 01-15-2005, 06:47

@ twanda,

remove R407. [upper side ui ic n400] if all ok reples it from scrape .

w.b.r.

vrepair · 01-15-2005, 07:07

hi

lights in 3310 problem is a trck open open prob.check the continuity between the glowing and non glowing lights...and still if that doesnot work then its a prob of keypad interface IC which is located near the buzzer connection.

mohammed · 01-15-2005, 09:42

hi
tawanda "IF" i understand u corectly

ur BOTTOM 4 leds turn ON only, and other 4 top dont

"IF"

this case then simply bridge wire from bottom working leds + n ground

keep well

Azampk · 01-17-2005, 01:08

DO WIRE FORM WORKING LIGHTS TO NOT WORKING LIGHTS IT'S WORK FINE

+2+ -2- IT WILL BE OK

**********************Azam**********************

ics_igrec_zet · 01-17-2005, 02:40

As @magixian sed before all u need is schematic (check atachement). There are 2 possibilities:
1. led driver dead
2. intrerupted tracks
How u resolve this is simple use a ohmmeter and see if u have continuity. leds have following configuration:
one pin connected to +batt (positive connector of battery) and other to led driver (4370433). Now pay attention: All leds have one pin connected to +batt, but display leds are connected to pin 9 and keyboard to pin 13.
If after this check u don`t find intrerupted tracks means u have dead driver and needs to be changed.
good luck and BR, xyz

ulymar · 01-19-2005, 19:22

try to chech the line for its continuity using schematic diagram.
if line is all ok and the resistance and still the 4 bulb not lighting then
you need to reheat/reflow the CCONT, usually it happens when water damaged. try this, this is just an experience. ok

01-14-2005, 20:01	#1 (permalink)
tawanda Freak Poster Join Date: Jun 2004 Age: 44 Posts: 281 Member: 68534 Status: Offline Thanks Meter: 18	3310 switching 4 lights only pliz i have 3310 that only swicthes 4 bottom lights only and does not switch on tried to clean and rehot the pcb and also flashing but could not help pliz can you give me the solution tawanda

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01-14-2005, 20:53	#2 (permalink)
tanucu04 Freak Poster Join Date: Jul 2004 Location: Cluj-Romania Age: 44 Posts: 169 Member: 71633 Status: Offline Thanks Meter: 2	You must change led's driver.

01-15-2005, 06:47	#4 (permalink)
baraka42 No Life Poster Join Date: Aug 2002 Location: india Age: 63 Posts: 1,476 Member: 14578 Status: Offline Thanks Meter: 831	@ twanda, remove R407. [upper side ui ic n400] if all ok reples it from scrape . w.b.r.

01-15-2005, 07:07	#5 (permalink)
vrepair No Life Poster Join Date: Dec 2003 Location: in the center of the heart Posts: 963 Member: 46125 Status: Offline Thanks Meter: 59	hi lights in 3310 problem is a trck open open prob.check the continuity between the glowing and non glowing lights...and still if that doesnot work then its a prob of keypad interface IC which is located near the buzzer connection.

01-15-2005, 09:42	#6 (permalink)
mohammed No Life Poster Join Date: Sep 2002 Location: max232 chip Posts: 690 Member: 16036 Status: Offline Thanks Meter: 5	hi tawanda "IF" i understand u corectly ur BOTTOM 4 leds turn ON only, and other 4 top dont "IF" this case then simply bridge wire from bottom working leds + n ground keep well

01-17-2005, 01:08	#7 (permalink)
Azampk No Life Poster Join Date: Jun 2003 Age: 37 Posts: 865 Member: 30303 Status: Offline Sonork: 1001579198 Thanks Meter: 17	DO WIRE FORM WORKING LIGHTS TO NOT WORKING LIGHTS IT'S WORK FINE +2+ -2- IT WILL BE OK ********************Azam********************

01-19-2005, 19:22	#9 (permalink)
ulymar Product Supporter Join Date: Sep 2004 Location: PHILIPPINES Age: 46 Posts: 686 Member: 81952 Status: Offline Sonork: 1597268 Thanks Meter: 2,364	try to chech the line for its continuity using schematic diagram. if line is all ok and the resistance and still the 4 bulb not lighting then you need to reheat/reflow the CCONT, usually it happens when water damaged. try this, this is just an experience. ok