Hi Gary,
Just BE CAREFUL, jumping in and out of the RF Deck, Discharging B+, etc, while
hot, or not hot, checking for heat and such on the plate caps....In fact, would
not be a bad idea to have a fellow ham looking over your shoulder while
planning and executing EACH successive hands-on step of the investigation of
the RF Deck...
We want lots of future contributions from you to AMPS!
Best Regards,
73, de Pat Barthelow AA6EG
> From: wa6fgi@sbcglobal.net
> To: amps@contesting.com
> Date: Wed, 9 Jun 2010 16:35:07 -0700
> Subject: [Amps] Centurion plate current issue
>
> Hi to the group:
>
> Finally got around to taking off the cover (excess of twenty screws) removed
> both tubes from sockets and switched the amp on. No plate current draw. Good.
> Was suggested by TenTec to insert tubes one at a time and check plate current.
>
> Did that, plate current draw with either tube in place is 175 ma or so.
>
> Is there any way to check (with ohmmeter) for internal shorts? Which pin to
> what particular pin?
>
> I `spose anything is possible but both tubes going bad at same time?
>
> When checking the tubes, had the HV on for maybe no more than 30 seconds or
> so, aluminum heat dissipaters on the tube(s) was extremely hot to the touch.
>
> Fwiw, tubes are RF products house brand. If I need new ones, any difference
> form RF house and Taylor's?
>
> looking of some ideas on this one (some more),
>
> 73, Gary...wa6fgi
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