"Frank Dresser" wrote in message
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Frank:

I believe the reason that the main filter capacitor survives so long
in the SX-62 and SX-42 is its location. It is near the back of the
chassis behind the tuning capacitor, well away from any tubes or other
heat producers. Most sets put the filter can near the power
transformer, rectifier and audio output tubes where it gets roasted.

Best Regards,

Ed