[Amps] AL-80B

[Jim Barber]

Aubrey,

This applies to the AL-80/SB1000, but may apply to the 80B as well.

If you pull the cover off, check to see if there's a power relay mounted 
on a piece of metal that's screwed onto
the rear cabinet wall. If so, make sure the screw is tight and the 
bracket is firmly attached to the cabinet
wall.

I put an SB-1000 on the shelf for years because I thought the 
transformer was delaminating; turned out it was a loose
screw. Go Figure.

73,
Jim N7CXI


On 9/30/2012 3:38 PM, Mansfield Aubrey wrote:
> My 5 week old AL-80B has developed a loud transformer hum when keyed. 
> It's very noticeable (and annoying), even with headphones on. Is this 
> normal? - Aubrey N3BM _______________________________________________ 
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