Subject: [AMPS] need help with old amp supply lk-500z amp
<snip>
> first thing I ran into was the manual for the amp did not have a
schematic
> for the power supply portion. if someone has one and could mail, scan
and
> email, or fax to me I would greatly appreciate it.
Denny didn't do a great job with the manuals, for sure. Many changes
and additions were made to my LK-800 that were never documented. ( If
anyone has the circuit for the ALO board, I would appreciate a copy.)
However, I believe that the schematic for the power supplies from amp to
amp were basically the same. If you can't find a schematic for the
LK-500, you might try downloading the one from the LK-800 manual that's
on BAMA. That, plus your parts list might give you some idea of what to
do. Then, again, given the quality of the documentation, it might not
> one problem that I see for sure is a blown wire wound resistor. label
says
> 5W1'ohm symbol'J so I assume that means it is a 5 watt 1 ohm wire
wound
> device.
>
> right now I am trying to figure out how to get at the board to
determine if
> the filter caps, diodes, and other parts are bad or good. looking
like
> major dissambly.
73 and good luck with the project.
Ken K4XL
k4xl@arrl.net
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