The amp is now working.
I opened it up and found a couple of connectors that were a bit loose and
reseated them. I also found something a bit more serious. One of the hot 220V
leads from the fuse was pinched under the transformer frame between the frame
and the base of the cabinet. It actually broke the insulation and there was
bare copper showing. I loosened the bolts under the cabinet for the
transformer and lifted it enough to get the wire free to suspend it in free
space. I'll have to do some disassembly to get in to the wire and insulate it
properly. This amp was made in April 2010.
I wanted to post this follow up so that no one wastes time on replying. I'm
not sure what it was, but it's fixed now.
73,
Jim AE1CW
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Mar 12, 2023, 10:25 by tentec@contesting.com:
> I mistakenly transmitted from my Kenwood TS-590S into my new (used) Ten-Tec
> Centurion amp without the control relay turned on in the radio. The amp saw
> up to 20 watts in with the amp switch in operate with no transmit relay
> signal from the radio. Now the amp has no output.
>
> Notes:
>
> Amp turns on, standby, operate and transmit lights works. There is plate
> voltage. The tubes light. There is plate current and grid current when I
> transmit from the radio with the radio's amp control relay now turned on, but
> no output from amp. I only tried transmitting with low power from the radio,
> up to 25W.
>
> Could I have blown a component on a board transmitting into the amp when the
> amp switch was set to operate with no control signal coming from the radio?
> If so, where should I look in the amp?
>
> Thank you for any suggestions.
>
>
>
>
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> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
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