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09-29-2006, 19:55 | #1 (permalink) |
No Life Poster Join Date: Feb 2002 Location: burning phones
Posts: 1,704
Member: 9700 Status: Offline Thanks Meter: 62 | 6230 persistent sim problem Nokia 6230 "insert sim", I have changed 3 times sim ic, repaired it but two days later phone comes again with same problem ok I change sim ic again and again but no solution then I repair it with the old good "bridging" solution instead of changing sim ic. I maked three wires correctly and phone repaired again two days later phone comes again with insert sim prob. then I have maked bridges a lot of times but I can't repair it anybody can give me any idea? wbr thecult |
09-29-2006, 20:21 | #2 (permalink) |
No Life Poster Join Date: Nov 2001 Location: England Age: 41
Posts: 2,821
Member: 7653 Status: Offline Thanks Meter: 823 | ur location is the right one, as u have well "burned" this phone the sim IC (esi filter) is intended to protect UEM from harmful current spikes caused by static discharge. i think in the beginning, there was some grounding problem in the phone. maybe the SIM reader grounding circuit was not right. so everytime u fit the new ESI filter, the ESI filter was geting ****n (think of it as a fuse). when u made the "gool old" bridge method, you put some nice wires that lead the harmful current spikes straight inside the UEM! without the fuse protection, UEM internal circuits have burned. so now phone is BER (Beyond Economical Repair) |
09-29-2006, 20:44 | #3 (permalink) | |
No Life Poster Join Date: Feb 2004 Location: @Work
Posts: 611
Member: 56215 Status: Offline Thanks Meter: 67 | Quote:
HEHE our Location says what you are doing with this 6230 HEHE Br | |
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