Thanks to everyone who provided insight into the problem I'm having with my
HA-10.
However, the problem is still unresolved. I have checked everything in the
RF deck
that I can possibly think of to check and I can't find anything wrong.
No shorts, no opens, and all the caps check okay on my cap checker,
or at least they read the correct value.
I was able to swap out the DC blocking cap with a known good one.
The band switch checks out. Both the tune and load caps are okay.
Several suggestions that I received pointed to an unloaded output circuit,
(bad xmit / rcvr. relay or coax) but I have good continuity to my 50 ohm
dummy load. I removed the plate choke
and tested it with an O' scope and RF generator
to make sure it is okay.
Lastly I removed 3 of the tubes and
tried to tune up with just one tube at the time.
I rotated each of the 4 tubes in one at a time
and got the same problem......high
current......no output. I purchased this amp
"as is" so I guess it's possible I got
4 bad tubes? Anyone have any other ideas?
Thanks!
Eddie KJ4R
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