"Ken Weitzel" wrote in message
news:7pQpi.6353$rX4.2367@pd7urf2no...
Golf wrote:
A friend has this in a cabinet with phono player. The chassis # is
RK-117. The amp/power supply seems to be missing. He said he found a
number for the amp - CS-123 (or 125). The radio has AM, short wave,
and FM. He wanted to try to get this going, so I told him I would ask
this group for info on the power supply/amp parts availability and any
other general knowledge about this particular radio. I would think we
could install a modern PS and amp if we knew the requirements. Of
course he also told me the radio has tubes in it, which I have no clue
if replacements could be found in this old thing? If anyone here has
some info, please feel free. I told my buddy I guarantee someone in
this group will know something about this. Thanks as always.


Hi...

With all due respect, it would seem a shame to not restore it as
close as possible to original...

If nothing else comes up, he can buy the info here...

http://www.olditemsale.com/rca/rca.htm

Take care.

Ken


Tubes are still widely available for these oldies, but some are a bit expensive.
If the unit hasn't suffered terribly in damp storage, it might still be
restorable.
By all means, the first thing that should be done is to replace *ALL*
electrolytic capacitors in the unit. Then, replace all the paper and paper-oil
capacitors. The resistors can be checked with a good meter and left in place if
not too far out of tolerance (usually 10%, but in some cases 20%).
If you can't find a power supply chassis for this unit, you might have to build
one. The schematic looks quite complete, and should contain sufficient detail
for a construction project.

Then, apply power and listen for radio noises. Keep in mind that they won't
sound like the broadcasts of 1947, but should put out pretty good sound.
If there's trouble, then I suggest that you post your questions and requests for
guidance to the rec.antiques.radio+phono group... Terribly nice bunch of guys
there (well, most of them are) and all are quite willing to help and give
advice.
--
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
address)

"In theory, there isn't any difference between theory and practice. In
practice, there is." - Yogi Berra