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Old 1st September 2013, 07:32 PM   #1
ian33 is offline ian33
diyAudio Member
Join Date: Jun 2010
Default soundstream clone boards

Hi all
This amp(A3000DB) came in with bad PS FETs and outputs.some track on the board has been mess with .I want to no if this is ok (see pic) also there is a blue wire going to the output terminal should it be there.

Not sure about the modle but i have seen this board in a fifferent amp.
Attached Images
File Type: jpg ss1.jpg (482.4 KB, 123 views)
File Type: jpg ss2.jpg (588.6 KB, 119 views)
File Type: jpg ss3.jpg (593.4 KB, 113 views)
File Type: jpg ss4.jpg (558.1 KB, 113 views)
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Old 1st September 2013, 08:56 PM   #2
Perry Babin is offline Perry Babin  United States
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
The blue wire appears to be connecting the secondary ground to the negative speaker terminal. the connection is right but it may cause problems (some amps are sensitive to the routing of grounds). Try to find the break in the original foil and repair the break.

THIS is a photo of an intact board.
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Old 4th September 2013, 05:20 AM   #3
ian33 is offline ian33
diyAudio Member
Join Date: Jun 2010
Base on the dvd all wave forms on the driver board seem to be ok expect for (-in)
The trace remain straight and gets a little thicker.Did i miss something ?
The wave forms on the first leg on the low and high side FETs are different is that normal?

Amp plays good audio.
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