[Amps] Trouble with LK500-ZB

[R.Measures]

On May 19, 2004, at 7:11 PM, CGranski at aol.com wrote:

> Have an Amp Supply LK500-ZB that has developed a problem on 160=20
> meters. This amp uses a pair of 3-500's in grounded grid. Power output=20=

> on a Bird has dropped to ~400 watts max and it draws excessive plate=20=

> current with more than 50 watts of drive power. Performance on all=20
> other bands is normal and the problem is present with a dummy load or=20=

> antenna. The ceramic caps switched in on 160 have all just been=20
> replaced with no improvement. Input SWR is normal.
>
>
> Any ideas as to what may be wrong?

=F0  Toasted bandswitch C-padder contacts on the 160m position?
>
>
>
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Richard L. Measures, AG6K, 805.386.3734.  www.somis.org