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Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section. |
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10-29-2002, 21:06 | #1 (permalink) |
Insane Poster Join Date: Mar 2002
Posts: 99
Member: 10015 Status: Offline Thanks Meter: 0 | 3210 low signal please need help with 3210. low or no signal, when I log on network and make call, I hear interrupted and distorted voice. So I realized to change 71MHz saw filter - nothing changed. so I changed RX gsm and RX pcn filters - nothing changed. please can U give me some tips? thank U very much |
11-01-2002, 21:32 | #4 (permalink) |
Freak Poster Join Date: Dec 2001 Location: Ukraine Age: 49
Posts: 227
Member: 8000 Status: Offline Thanks Meter: 2 | the first step! For the first just try to reheat the CCONT!!!!!! May be there is just a dried solder, but not the dead ic!!!! Try this man! I think your phone will be ok! Good luck! Corban |
11-01-2002, 21:43 | #5 (permalink) |
Freak Poster Join Date: Dec 2001 Location: Ukraine Age: 49
Posts: 227
Member: 8000 Status: Offline Thanks Meter: 2 | to jero I can't understand why man has to reball cobba (audio ic) when he has the network problem????? And the sound problem here - is the reason of the low network. Corban |
11-07-2002, 00:23 | #6 (permalink) |
Insane Poster Join Date: Mar 2002
Posts: 99
Member: 10015 Status: Offline Thanks Meter: 0 | It is still same Now I have new one to repair. Signal ok, but when I make a call, signal going down, after few second is full signal, but after next few sec. going down again. Sometimes call is break down. I changed saw filter, reflow cobba, but nothing changed any idea? thank U guys for previous replyes best regards |
11-10-2002, 15:55 | #8 (permalink) |
Freak Poster Join Date: Aug 2002 Location: __inside__ Age: 41
Posts: 102
Member: 14792 Status: Offline Thanks Meter: 1 | @Corban.. sorry for the late answer cos i was in vacation..."low or no signal, when I log on network and make call, I hear interrupted and distorted voice"let's tell the summery of what Cobba is:it is an audio contoller and processor which contains the audio and rf codecs.it has 3 audio signal outputs of which dual ended ear lines are used for internal earpiece and hf line for accessory audio output.the third one is auxout is used only for bias supply to the headset microphone...he said "So I realized to change 71MHz saw filter - nothing changed. so I changed RX gsm and RX pcn filters - nothing changed"..Cobba have usually unsoldered or dusted pad under itself(between pcb and cobba)..if u dont clean them and make there new solder with solder machine you will get low signal,full signal then nothing,distorted voice on the reception.....you cant solve distorted voice in earphone by rehotting CCONT....i repaired many nokia by reballing and heating components around cobba that had the same problem.(dont rehot just reball)...i hope you understand....note:i may go holiday again for three days.good luck mates...__jero__ |
11-10-2002, 16:45 | #9 (permalink) |
No Life Poster Join Date: May 2001 Location: INSIDE MOTOROLA WORLD Age: 54
Posts: 1,053
Member: 4588 Status: Offline Thanks Meter: 45 | to flashman are you can change to epcos 232 saw fılter .ıf you cant change ıt sometımes ı can change to epcos telephone ok not :not black equpment metal epcos good work kenwood good work |
11-10-2002, 19:41 | #10 (permalink) | |
No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58
Posts: 1,677
Member: 1060 Status: Offline Thanks Meter: 10 | Re: to jero @Corban, CCONT is supply for VRX, VTX , and V......... ! COBBA is job on A/D , D/A convert for MAD , and also control AFC and AGC ! now you know how important of COBBA work ? @kenwood ,,,,,,,,,,,,,,,what happen your message typing ? your "i" always become to "ı" ! @ jero good job, and have nice holiday Willy Quote:
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