[Hallicrafters] SX-73 / R-274 Starting Resto

[Richard Knoppow]

   I started writing a long piece about the SP-600 caps none of which 
may be applicable to the Hallicrafters SX-73/R-274, which may have 
different caps than the SP-600. Its possible it has oil filled bathtub 
paper caps, which  the SP-600 does not have.  I agree with the previous 
poster that its a waste of time and effort to try to restuff them. 
Mounting on terminal strips works fine.
     I had to replace a bunch of oil-filled bathtub paper caps in an RCA 
AR-88. All had leaked oil from the terminals. This receiver had  bottom 
cover (rack mount type) so the oil was mostly collected there. I washed 
it out carefully. I mounted new plastic caps on terminal strips and 
disposed of the old ones.
     I think all the bathtub caps in the SP-600 are electrolytic types. 
The ones I opened up were potted in resin, no oil. Again, not worth the 
bother to try restuffing. I am more interested in performance than 
authentic underchassis appearance.
     I don't have direct experience with the SX-73 but they are reputed 
to have excellent performance when working right so should be worth the 
effort of restoring properly.

-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL