Threshold 400A HELP !!

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Airedale

Member
Joined 2005
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!
 
Nelson Pass

Nelson Pass

The one and only
Joined 2001
Paid Member
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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