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Old 9th February 2005, 11:52 PM   #1
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Join Date: Jan 2005
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Default Threshold 400A HELP !!

Can anyone tell me the factory reccomended fuse size on the power board for this amp ?

I know this is a loaded (and somewhat unfair question), but what generally would cause the power board fuse to blow in one channel at about 50 watts continuous power on these amps ? Is there any smoking gun or "have you looked at this first" type of thing ? Thanks!
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Old 10th February 2005, 08:30 PM   #2
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Join Date: Mar 2001
My schematic does not show a power board fuse - it shows
an output fuse and a AC line fuse. If there is a fuse in line
with the DC supply, it would be on the negative rail, and I
would start with a 3 amp fast blow to see if it pops on turn-on,
which would indicate a failure.
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Old 16th February 2005, 10:56 PM   #3
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Join Date: Aug 2004
Location: florida
Default 400A

I can tell you all about that amp.
You have a bown output transistor
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