George -
Does it have a couple of RCA jacks, vertical, next to the power
connector that are unlabeled? If so it may have been modified for use
with the TC-2/6 or other transverter.
If so, these jacks are used to interrupt the PA Screen voltage, and will
need a jumper cable between them. Al
hi George,
I'd check the B+ dropping resistor that goes to the plate of the driver
tube. Don't have the skem handy, but I think it's close to the
"bulkhead" between the driver and the finals. It's a half watter, and
just on the margin, they get warm and drift high in value, could even be
op
I am troubleshooting a T4XB I picked up at a local hamfest. Symptom is no
output, power supply works on another tx, finals draw bias current and respond
to bias pot, all tubes test good, can hear the
spot signal on the receiver. I have no drive or output. Resistance checks are
all nominal exc
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