N70 strange problem, it start, then backlight off then restart - GSM-Forum

DjDecibel · 02-19-2010, 02:52

hello all,
i have a strange problem with a nokia n70 (rm-84)

it turns on normally, after some seconds that powered on, the backlight disappear, but you can still use the phone (without lcd backlight) and after 5 or 6 seconds, it restarts..

i rehotted the whole mainboard 2 times.. but the problem remains

i also tryed another LCD.. same problem....

how can i solve it??

mehulkr76 · 02-19-2010, 03:11

I think it needs flashing

DjDecibel · 02-19-2010, 15:01

but the phone works correctly until it restarts...

waqarN70 · 02-19-2010, 16:49

Try flashing the phone if not succes then make smps bypas jumper

DjDecibel · 02-20-2010, 15:05

can you post the jumper?

DjDecibel · 03-04-2010, 00:21

i flashed with jaf... still same problem..

..::Gsmideazone::.. · 03-04-2010, 07:13

Quote:

Originally Posted by DjDecibel

i flashed with jaf... still same problem..

post flash log then we help u

Binoy.c · 03-04-2010, 08:27

1.remove inner panel and power switch put only display and power on it with a tweezer and check whether it restarts or not...this may help you

DjDecibel · 03-04-2010, 16:45

Quote:

Originally Posted by Binoy.c

1.remove inner panel and power switch put only display and power on it with a tweezer and check whether it restarts or not...this may help you

same problem.. the phone dowsnt power on normally but it lose the backlight

ps i noticed one thing, if the phone is connected to the usb cable to pc.. it never turns off...if i unplug the camble it will have the same problem..

ahmad yousif · 03-04-2010, 17:18

the light goes off after plug the charger or without ?
plz upload check bus in mxkey that will help

DjDecibel · 03-04-2010, 19:11

turn off without usb cable plugged in...

Binoy.c · 03-05-2010, 07:37

its my assuming as the back light and vcore volt controlled by the thavo ic please change it and check it...

02-19-2010, 02:52	#1 (permalink)
DjDecibel Freak Poster Join Date: Sep 2006 Location: Southern Italy Posts: 229 Member: 343635 Status: Offline Thanks Meter: 57	N70 strange problem, it start, then backlight off then restart hello all, i have a strange problem with a nokia n70 (rm-84) it turns on normally, after some seconds that powered on, the backlight disappear, but you can still use the phone (without lcd backlight) and after 5 or 6 seconds, it restarts.. i rehotted the whole mainboard 2 times.. but the problem remains i also tryed another LCD.. same problem.... how can i solve it??

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02-19-2010, 03:11	#2 (permalink)
mehulkr76 No Life Poster Join Date: Feb 2007 Location: GSM World Posts: 1,169 Member: 457470 Status: Offline Thanks Meter: 159	I think it needs flashing

02-19-2010, 15:01	#3 (permalink)
DjDecibel Freak Poster Join Date: Sep 2006 Location: Southern Italy Posts: 229 Member: 343635 Status: Offline Thanks Meter: 57	but the phone works correctly until it restarts...

02-19-2010, 16:49	#4 (permalink)
waqarN70 No Life Poster Join Date: Sep 2007 Location: MUMBAI Posts: 515 Member: 583454 Status: Offline Thanks Meter: 80	Try flashing the phone if not succes then make smps bypas jumper

02-20-2010, 15:05	#5 (permalink)
DjDecibel Freak Poster Join Date: Sep 2006 Location: Southern Italy Posts: 229 Member: 343635 Status: Offline Thanks Meter: 57	can you post the jumper?

03-04-2010, 00:21	#6 (permalink)
DjDecibel Freak Poster Join Date: Sep 2006 Location: Southern Italy Posts: 229 Member: 343635 Status: Offline Thanks Meter: 57	i flashed with jaf... still same problem..

03-04-2010, 08:27	#8 (permalink)
Binoy.c Freak Poster Join Date: Jun 2007 Location: banglore\kerala Posts: 498 Member: 523496 Status: Offline Sonork: ammachis Thanks Meter: 76	1.remove inner panel and power switch put only display and power on it with a tweezer and check whether it restarts or not...this may help you

03-04-2010, 17:18	#10 (permalink)
ahmad yousif No Life Poster Join Date: May 2008 Location: amman Posts: 935 Member: 764174 Status: Offline Thanks Meter: 259	the light goes off after plug the charger or without ? plz upload check bus in mxkey that will help

03-04-2010, 19:11	#11 (permalink)
DjDecibel Freak Poster Join Date: Sep 2006 Location: Southern Italy Posts: 229 Member: 343635 Status: Offline Thanks Meter: 57	turn off without usb cable plugged in...

03-05-2010, 07:37	#12 (permalink)
Binoy.c Freak Poster Join Date: Jun 2007 Location: banglore\kerala Posts: 498 Member: 523496 Status: Offline Sonork: ammachis Thanks Meter: 76	its my assuming as the back light and vcore volt controlled by the thavo ic please change it and check it...