[Hallicrafters] SX-62A Alignment

[K1LKY]

-----Original Message-----
>From: TC Dailey <daileyservices at qwest.net>
>Sent: Aug 27, 2009 5:05 PM
>To: hallicrafters at mailman.qth.net
>Subject: [Hallicrafters] SX-62A Alignment
>
>I've run into the same symptoms on the 3 SX-62's and 62A's I've done.

I hereby nominate TC Daily for Sainthood.

The SX-62 and -42 are among the most challenging radios to get really right.  The front ends of them are packed in there so as to make replacement of bypass caps a real challenge.  And often a small coupling cap has shorted and taken out a resistor or two.

One of the most experienced and determinted radio restorers I know finally gave up on one SX-42 because one of the high frequency bands was rather deaf.  There seemed to be no cure for it.  (May have been a shorted rf coil, who knows!)
 
>Another thing that seemed to help was to "wash out" the trimmers with 99.8% 
>isopropyl alcohol - 

Thanks for that tip.  The trimmers have gotten a lot of talk on the R-390 list because they stick and then break when you try to adjust them.

Roy