I thought I would share a fix to my KPA-500 with the group in case someone
else might have the same problem.
I have an old amp (two-digit serial number), and it has performed flawlessly
until yesterday. Suddenly the Operate-Standby button stopped working, and
then I noticed that other buttons worked, but did strange things. The cure
was simply to take off the front panel and reseat the two ribbon connectors.
Actually I could only reseat the large connector at the panel end, and the
small one at the board it plugs into in the main body. The other end of the
large connector is at the back of the amp and not accessible without
considerable disassembly. And the panel end of the small connector was
stuck on so tight that I was afraid I would break something in removal. But
reseating 2 of the 4 possible connectors did the trick. Now it seems to be
back to normal.
73, andy ae6y
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