please help N70(display and keypad no light) - GSM-Forum

farfour · 07-13-2008, 11:39

i have a problem with my N70(display and keypad no light)
i already changed the coil,led driver,tahvo ic,retu ic,but the problem not solved......please any one can help me 2 solved this roblem

farfour · 07-13-2008, 17:43

no one can help me with this or what

eiji 1198 · 07-13-2008, 18:18

you have test too charge the light sensor or no(at the diplay connector beside) !because some time is the sensor problem! i also have one time like your problem too i all charge all part but also not light! after i charge the sensor is ok

farfour · 07-13-2008, 18:53

i just try it but still no light

farfour · 07-13-2008, 21:10

still waiting for solution

mazmaz1 · 07-13-2008, 21:40

Hello
please check this schematic and measur resistor in FB pin to a value near the 33 ohms.
and 1.2v to 3.9v in A2 pin for enabling light(under light fade time).

farfour · 07-13-2008, 22:20

Quote:

Originally Posted by mazmaz1

Hello
please check this schematic and measur resistor in FB pin to a value near the 33 ohms.
and 1.2v to 3.9v in A2 pin for enabling light(under light fade time).

i do all u say and all measur in led driver are same in ur shema

farfour · 07-14-2008, 11:06

is there any other solution

mazmaz1 · 07-14-2008, 13:19

man what you say ?
if your measuring values are same as top schematic and you have 14v in output of this unit you must do jumpers to connect voltages to led lines.

psilva · 07-14-2008, 13:32

hi

Try this solution it's my original solution

Crazytel

farfour · 07-14-2008, 13:40

Quote:

Originally Posted by mazmaz1

man what you say ?
if your measuring values are same as top schematic and you have 14v in output of this unit you must do jumpers to connect voltages to led lines.

i mean all other measure in ur shema are good and led driner work in other phone good but with this phone dont have 14v in output thats why i cant do jumpers

farfour · 07-14-2008, 17:13

Quote:

Originally Posted by psilva

hi

Try this solution it's my original solution

Crazytel

i already do that but witout succes

if there is any other solution please share it with me

farfour · 07-14-2008, 20:55

there is no solution as i see

i have to buy an other phone for *******r

farfour · 07-18-2008, 11:51

i still waiting if any one can help me

07-13-2008, 11:39	#1 (permalink)
farfour No Life Poster Join Date: Jan 2005 Age: 42 Posts: 620 Member: 111730 Status: Offline Thanks Meter: 118	please help N70(display and keypad no light) i have a problem with my N70(display and keypad no light) i already changed the coil,led driver,tahvo ic,retu ic,but the problem not solved......please any one can help me 2 solved this roblem

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07-13-2008, 17:43	#2 (permalink)
farfour No Life Poster Join Date: Jan 2005 Age: 42 Posts: 620 Member: 111730 Status: Offline Thanks Meter: 118	no one can help me with this or what

07-13-2008, 18:18	#3 (permalink)
eiji 1198 Insane Poster Join Date: Nov 2007 Location: malaysia Posts: 95 Member: 638003 Status: Offline Thanks Meter: 18	you have test too charge the light sensor or no(at the diplay connector beside) !because some time is the sensor problem! i also have one time like your problem too i all charge all part but also not light! after i charge the sensor is ok

07-13-2008, 18:53	#4 (permalink)
farfour No Life Poster Join Date: Jan 2005 Age: 42 Posts: 620 Member: 111730 Status: Offline Thanks Meter: 118	i just try it but still no light

07-13-2008, 21:10	#5 (permalink)
farfour No Life Poster Join Date: Jan 2005 Age: 42 Posts: 620 Member: 111730 Status: Offline Thanks Meter: 118	still waiting for solution

07-14-2008, 11:06	#8 (permalink)
farfour No Life Poster Join Date: Jan 2005 Age: 42 Posts: 620 Member: 111730 Status: Offline Thanks Meter: 118	is there any other solution

07-14-2008, 13:19	#9 (permalink)
mazmaz1 Freak Poster Join Date: Aug 2006 Posts: 477 Member: 339455 Status: Offline Sonork: 100.1589401 Thanks Meter: 86	man what you say ? if your measuring values are same as top schematic and you have 14v in output of this unit you must do jumpers to connect voltages to led lines.

07-14-2008, 20:55	#13 (permalink)
farfour No Life Poster Join Date: Jan 2005 Age: 42 Posts: 620 Member: 111730 Status: Offline Thanks Meter: 118	there is no solution as i see i have to buy an other phone for *******r

07-18-2008, 11:51	#14 (permalink)
farfour No Life Poster Join Date: Jan 2005 Age: 42 Posts: 620 Member: 111730 Status: Offline Thanks Meter: 118	i still waiting if any one can help me