[R-390] R-390A Restoration Progress (or lack of)

[rbethman]

Dick,

I know of NO line filters being "available".  C103 is either right next 
to the line filter OR is the line filter.

You either HAVE to bypass it OR re-build it.

Unfortunately this IS a reality of life.  The OTHER possible issue is 
that 1) the power micro-switch is STUCK closed.  2) IF 1 is true - then 
the two CAP cans on the Audio Deck could ALSO be bad.

Check the circuit board under the Audio Module.  Sometimes an audio tube 
goes bad AND takes out one of the larger carbon composition resistors.

My "best" guesses.

Bob - N0DGN

Richard W. Solomon wrote:
> I got to the point of putting AC to it. That's after replacing
> the "IF Killer" cap and the "Audio Leaking" cap. Tested all the
> tubes in a TV-7, replaced 3 of them. Cleaned off the 1" of crud
> from 10 years storage in the barn.
>
> So, now lets apply power or not !! As soon as I plug it in the
> breaker on the strip pops. (yes, the radio is in the off position
> when I do this). I assume it must be the Line Filter so tomorrow
> I shall bypass it and see what happens.
>
> There is also C103. Not sure where in the circuit it lies.
>
> Are replacement Line Filters available ? And no, I am not in the
> mood to rebuild it !!
>
> 73, Dick, W1KSZ
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>   

-- 
Bob - NØDGN