"Thomas G. Marshall"
. com said:

Thomas G. Marshall coughed up:
My receiver once in a while will buzz loudly or humm softly. This
happens maybe once every 30 days or so, and I use the thing every
day. It *might* be increasing, but I'm not sure.

Furthermore, I can get it to go away by turning the receiver off then on
again.


...[rip]...

How are you with a soldering iron?
You could try to resolder the PCB.
If that fails, there are probably some electrolytics on the way out.
If you know what to do and where to get them, it's an easy and
cost-effective repair.
If not, toss it.

--
Sander de Waal
" SOA of a KT88? Sufficient. "