v3688 network problem - GSM-Forum

Destructor · 01-22-2004, 21:17

when I turn it on network signal is present and after 20 sec or when i try to make a call it's gone,and then comes back,and then again lost signal,what is problem here,tell your solutions

Bert · 01-26-2004, 04:34

Pls measure the battery side 's 26 MHZ crystal clock, and check the Magic I.C if it's working good you have to move the metal cover.

Destructor · 01-28-2004, 11:18

anybody else have some solutions

Destructor · 01-31-2004, 15:56

bert can you explain where are these two things that you are talking about above,and I have one question,on the battery side on the top of PCB are 3 transistors,I wan't to know somethinh about that in the midlle,what is it used for....THANKS

01-22-2004, 21:17	#1 (permalink)
Destructor No Life Poster Join Date: Apr 2003 Location: Crazy House Age: 41 Posts: 683 Member: 27606 Status: Offline Thanks Meter: 15	v3688 network problem when I turn it on network signal is present and after 20 sec or when i try to make a call it's gone,and then comes back,and then again lost signal,what is problem here,tell your solutions

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01-26-2004, 04:34	#2 (permalink)
Bert No Life Poster Join Date: Oct 1999 Location: Hong Kong Posts: 1,509 Member: 596 Status: Offline Sonork: 100.33096 Thanks Meter: 514	Pls measure the battery side 's 26 MHZ crystal clock, and check the Magic I.C if it's working good you have to move the metal cover.

01-28-2004, 11:18	#3 (permalink)
Destructor No Life Poster Join Date: Apr 2003 Location: Crazy House Age: 41 Posts: 683 Member: 27606 Status: Offline Thanks Meter: 15	anybody else have some solutions

01-31-2004, 15:56	#4 (permalink)
Destructor No Life Poster Join Date: Apr 2003 Location: Crazy House Age: 41 Posts: 683 Member: 27606 Status: Offline Thanks Meter: 15	bert can you explain where are these two things that you are talking about above,and I have one question,on the battery side on the top of PCB are 3 transistors,I wan't to know somethinh about that in the midlle,what is it used for....THANKS