t28 signal problem - GSM-Forum

03-19-2002, 15:23

T28 has signal problem, when try to make a call signal drops,
I also have samsung A300 dead, any ideas ?

Chuk · 03-19-2002, 16:32

For T28:

Replace RM 009.

Gizmotronics · 03-21-2002, 05:55

1./T28 There is Inductor under the PA. Check it.
If it's gone replace first PA after that it.
If that inductor is OK just rehot PA.

2./A300 it can be from power supply circuit or from eprom.
Try to rehot eprom.Try to read eprom and see what you read.

03-21-2002, 06:28

Thanks for help.

T28 problem has been resolved by resoldering RM009/PA chip.

A300 problem is still here, i have checked eprom which is ok.

03-19-2002, 15:23	#1 (permalink)
Daz Guest Posts: n/a Member:	t28 signal problem T28 has signal problem, when try to make a call signal drops, I also have samsung A300 dead, any ideas ?

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03-19-2002, 16:32	#2 (permalink)
Chuk No Life Poster Join Date: Dec 2001 Location: Ukraine Age: 46 Posts: 1,146 Member: 7767 Status: Offline Thanks Meter: 3	For T28: Replace RM 009.

03-21-2002, 05:55	#3 (permalink)
Gizmotronics Freak Poster Join Date: Feb 2002 Location: www.gsm-support.co.uk Age: 53 Posts: 189 Member: 9302 Status: Offline Thanks Meter: 1	1./T28 There is Inductor under the PA. Check it. If it's gone replace first PA after that it. If that inductor is OK just rehot PA. 2./A300 it can be from power supply circuit or from eprom. Try to rehot eprom.Try to read eprom and see what you read.

03-21-2002, 06:28	#4 (permalink)
Daz Guest Posts: n/a Member:	Thanks for help. T28 problem has been resolved by resoldering RM009/PA chip. A300 problem is still here, i have checked eprom which is ok.