On Sat, 27 Jun 2009 06:51:02 +0000, Charles Harpole wrote:
>Thanks for your thoughtful reply.
>So far, I have 220VAC on the power supply
>input socket, and all three of the fuses are
>ok. The two on the rear are ok and the
>fuse originally located down in the middle
>of the p.s. is ok. I do not know that this
>unit has "circuit breakers." If so, where
>are they located? I have not opened
>the units yet. It is still dead, i.e., no
>response to the "on" switch. 73
>Charles Harpole k4vud@hotmail.com
,
There is a 90% schematic, with notes, on my website. It might give
you some troubleshooting ideas. The 10% that's left out is the RF
input and output circuitry and switching. The power supply stuff
is pretty complete. You might want to look for a problem with the
interlock circuitry, or with the wiring for the power switch, all
of which runs through the Molex connectors from the power supply
to the RF deck. Also look for burned circuit traces at the points
noted on the schematic.
http//audiosystemsgroup.com/publish
73,
Jim K9YC
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