N191 Power Dead(only Blinking Light............. - GSM-Forum

TURNING POINT · 09-09-2005, 20:42

What The Perfect Solution Of N191 Dead,when Pressing Power On Botton Only Green Like Blinking.........
After Rehot On Pcb Some Set Alive........but After Few Days Again Same 10% Sucsess After Changing Charging Connector,rehot Etc. Etc..........
Any Body Have The Solutin.plz.........plz

TURNING POINT · 09-23-2005, 08:21

dear mod...members...cdma experts....... plz any solution????????????????????????

~:Sujyot GSM Zone:~ · 09-23-2005, 10:58

Jusy change the clock crystel of 3310 with the one under CPU of 191

webshawk · 09-29-2005, 06:40

I have 100% succuss Solution... Just give Heat around the CPU by SMD ( Hot Gun )...I repair many pic by this solution...

sudeeshveekey · 09-30-2005, 07:41

thease all not perfect solution for this fault........
is there any other idea or any one knows about this fault please post in this forum.
and i know its a common fault in this model

akhileshbaghel · 09-30-2005, 09:13

Quote:

Originally Posted by turning point

What The Perfect Solution Of N191 Dead,when Pressing Power On Botton Only Green Like Blinking.........
After Rehot On Pcb Some Set Alive........but After Few Days Again Same 10% Sucsess After Changing Charging Connector,rehot Etc. Etc..........
Any Body Have The Solutin.plz.........plz

parchase ok (old)n191 set remove eeprom ic and use your set's eeprom ur phone will be ok

sudeeshveekey · 10-04-2005, 13:31

i dont think its an error with eeprom

intersoft · 10-04-2005, 14:48

make some heat left side of cpu it will solve the problem

TURNING POINT · 10-04-2005, 20:34

everything done but i think heat method is work in all above cashes and for few days ,but hit why..........??????????????? any body tell me which parts perticularly needs heat
thanks

sunil9200 · 10-07-2005, 04:56

just remove the the keypad sticker .. and rehot the pcb just below cpu.. there is no fault with eeprom or crystal .. 100% works .. try it out and then confirm... i must hav repaired more than 40 sets like that .and it does not give problem .. keep the pcb connected to charger.. if it gives display and does not restart for more than one hour.. it works...

kssinfo · 10-12-2005, 11:23

that no permanent solution for this model . any concrete solution is appreciated

sunil kumar · 10-12-2005, 17:28

basically some cracks under flash ic so no permanatly solution of this pro.

sunil9200 · 10-13-2005, 20:47

sunil , there is no problem or crack under the ic.. since cpu and other main chips( bga) are glued to the pcb.. reballing is not possible.. so only option is to rehot cpu and pcb below cpu .. thatz the only way i cud repair most of the n191 boards.. there is no other problem but the contacts of the cpu chip.
thanx
Sunil

gsmsikar · 03-04-2006, 20:36

but why heating is the only option with all of us ,

as the problem occurs while charging , so how can it be any cracks under FLASH IC or the CPU ?
when any set is taken to the service center they tell it is the CPU problem and cannot be repaired , so PCB needs to be changed.., and that is not an affordable solution ...//

so is there any perfect solution of this problem ?

TURNING POINT · 03-04-2006, 21:38

Quote:

Originally Posted by gsmsikar

but why heating is the only option with all of us ,

as the problem occurs while charging , so how can it be any cracks under FLASH IC or the CPU ?
when any set is taken to the service center they tell it is the CPU problem and cannot be repaired , so PCB needs to be changed.., and that is not an affordable solution ...//

so is there any perfect solution of this problem ?

good question
i am saying u a practical thing
i repaired 30 sets in a month
which i follow as per opinion given by other members
which 5 of them i repaired with reballing cpu
i get 25 set complane but this 5 set till now running(scence 3 month)no complane
so i think that there is a crack under cpu or may the solder paste use for that ic is poor quality
that is my opinion only

09-09-2005, 20:42	#1 (permalink)
TURNING POINT No Life Poster Join Date: Jul 2004 Location: Cuttack,India Age: 54 Posts: 946 Member: 71721 Status: Offline Sonork: 100.106320 Thanks Meter: 139	N191 Power Dead(only Blinking Light............. What The Perfect Solution Of N191 Dead,when Pressing Power On Botton Only Green Like Blinking......... After Rehot On Pcb Some Set Alive........but After Few Days Again Same 10% Sucsess After Changing Charging Connector,rehot Etc. Etc.......... Any Body Have The Solutin.plz.........plz

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09-23-2005, 08:21	#2 (permalink)
TURNING POINT No Life Poster Join Date: Jul 2004 Location: Cuttack,India Age: 54 Posts: 946 Member: 71721 Status: Offline Sonork: 100.106320 Thanks Meter: 139	dear mod...members...cdma experts....... plz any solution????????????????????????

09-23-2005, 10:58	#3 (permalink)
~:Sujyot GSM Zone:~ No Life Poster Join Date: Jan 2004 Location: Jodhpur India Posts: 1,797 Member: 48238 Status: Offline Sonork: 100.54361 Thanks Meter: 397	Jusy change the clock crystel of 3310 with the one under CPU of 191

09-29-2005, 06:40	#4 (permalink)
webshawk Freak Poster Join Date: Jan 2005 Location: MOBILE WORLD Posts: 300 Member: 107267 Status: Offline Thanks Meter: 62	I have 100% succuss Solution... Just give Heat around the CPU by SMD ( Hot Gun )...I repair many pic by this solution...

09-30-2005, 07:41	#5 (permalink)
sudeeshveekey No Life Poster Join Date: Dec 2002 Location: cell-spare cochin penta kerala Posts: 585 Member: 18837 Status: Offline Sonork: 100.1601544 Thanks Meter: 71	thease all not perfect solution for this fault........ is there any other idea or any one knows about this fault please post in this forum. and i know its a common fault in this model

10-04-2005, 13:31	#7 (permalink)
sudeeshveekey No Life Poster Join Date: Dec 2002 Location: cell-spare cochin penta kerala Posts: 585 Member: 18837 Status: Offline Sonork: 100.1601544 Thanks Meter: 71	i dont think its an error with eeprom

10-04-2005, 14:48	#8 (permalink)
intersoft Freak Poster Join Date: Dec 2003 Location: india Age: 51 Posts: 101 Member: 46212 Status: Offline Thanks Meter: 0	make some heat left side of cpu it will solve the problem

10-04-2005, 20:34	#9 (permalink)
TURNING POINT No Life Poster Join Date: Jul 2004 Location: Cuttack,India Age: 54 Posts: 946 Member: 71721 Status: Offline Sonork: 100.106320 Thanks Meter: 139	everything done but i think heat method is work in all above cashes and for few days ,but hit why..........??????????????? any body tell me which parts perticularly needs heat thanks

10-07-2005, 04:56	#10 (permalink)
sunil9200 Freak Poster Join Date: Apr 2003 Location: MUMBAI,INDIA Age: 63 Posts: 190 Member: 27707 Status: Offline Thanks Meter: 6	just remove the the keypad sticker .. and rehot the pcb just below cpu.. there is no fault with eeprom or crystal .. 100% works .. try it out and then confirm... i must hav repaired more than 40 sets like that .and it does not give problem .. keep the pcb connected to charger.. if it gives display and does not restart for more than one hour.. it works...

10-12-2005, 11:23	#11 (permalink)
kssinfo Insane Poster Join Date: Aug 2005 Location: bangalore -india Age: 45 Posts: 57 Member: 167560 Status: Offline Thanks Meter: 1	that no permanent solution for this model . any concrete solution is appreciated

10-12-2005, 17:28	#12 (permalink)
sunil kumar No Life Poster Join Date: Jul 2004 Location: .:INDIAN:. Posts: 790 Member: 75838 Status: Offline Thanks Meter: 67	basically some cracks under flash ic so no permanatly solution of this pro.

10-13-2005, 20:47	#13 (permalink)
sunil9200 Freak Poster Join Date: Apr 2003 Location: MUMBAI,INDIA Age: 63 Posts: 190 Member: 27707 Status: Offline Thanks Meter: 6	sunil , there is no problem or crack under the ic.. since cpu and other main chips( bga) are glued to the pcb.. reballing is not possible.. so only option is to rehot cpu and pcb below cpu .. thatz the only way i cud repair most of the n191 boards.. there is no other problem but the contacts of the cpu chip. thanx Sunil

03-04-2006, 20:36	#14 (permalink)
gsmsikar No Life Poster Join Date: May 2003 Posts: 5,667 Member: 28004 Status: Offline Sonork: 100.1601142 Thanks Meter: 770	but why heating is the only option with all of us , as the problem occurs while charging , so how can it be any cracks under FLASH IC or the CPU ? when any set is taken to the service center they tell it is the CPU problem and cannot be repaired , so PCB needs to be changed.., and that is not an affordable solution ...// so is there any perfect solution of this problem ?