siemens s25 dead - GSM-Forum

nnannos · 04-30-2012, 17:43

Hi i had a problem with siemens s25 lcd screen(lcd pcb includes keyboard), and the lcd was cut off the pcb, then tried to connect it using sticker with no sucess. Now i found a new lcd (new keyboard with pcb) and nothing... the phone is dead, only the leds on keyboard are on and the new lcd stays blank, probably something was short circuited from lcd, and caused a problem to the main board. Have you any ideas where to begin looking?What might be the problem? I have checked the charging fuse, is there any other fuse??

nnannos · 05-01-2012, 16:21

Can anyone tell me what is the 6-pin ic near charging fuse? I suspect that but i do not know what it is, it has 417K on it but cannot find datasheet

dagos · 05-01-2012, 17:10

Quote:

Originally Posted by nnannos

Can anyone tell me what is the 6-pin ic near charging fuse? I suspect that but i do not know what it is, it has 417K on it but cannot find datasheet

...only the Service Manual for this phone.
Siemens-1169.pdf - 4shared.com - document sharing - download
dagos

nnannos · 05-01-2012, 17:36

Quote:

Originally Posted by dagos

...only the Service Manual for this phone.
Siemens-1169.pdf - 4shared.com - document sharing - download
dagos

I already have this service manual, also i have lvl 2.5, but none of them has info on the schematics or parts...

nnannos · 05-07-2012, 11:02

Problem solved, it was the cable and lcd screen. The phone power on now

04-30-2012, 17:43	#1 (permalink)
nnannos Junior Member Join Date: Apr 2012 Posts: 6 Member: 1750611 Status: Offline Thanks Meter: 0	siemens s25 dead Hi i had a problem with siemens s25 lcd screen(lcd pcb includes keyboard), and the lcd was cut off the pcb, then tried to connect it using sticker with no sucess. Now i found a new lcd (new keyboard with pcb) and nothing... the phone is dead, only the leds on keyboard are on and the new lcd stays blank, probably something was short circuited from lcd, and caused a problem to the main board. Have you any ideas where to begin looking?What might be the problem? I have checked the charging fuse, is there any other fuse??

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05-01-2012, 16:21	#2 (permalink)
nnannos Junior Member Join Date: Apr 2012 Posts: 6 Member: 1750611 Status: Offline Thanks Meter: 0	Can anyone tell me what is the 6-pin ic near charging fuse? I suspect that but i do not know what it is, it has 417K on it but cannot find datasheet

05-07-2012, 11:02	#5 (permalink)
nnannos Junior Member Join Date: Apr 2012 Posts: 6 Member: 1750611 Status: Offline Thanks Meter: 0	Problem solved, it was the cable and lcd screen. The phone power on now