[BC] Harris SX-1A NRSC woes...

[WBRadiolists at aol.com]

In a message dated 09/03/2008 3:28:50 PM Eastern Daylight Time, 
tosenkowsky at prodigy.net writes:

> The caps in question are the large blue canister
>  ones behind the PDM amps. Remove them, shake
>  and listen for a sloshing sound. Replace all of
>  them if you hear any slosh. Proper drive from
>  the Osc card and IPA are also important. Be
>  absoutely certain the mechanical connections to
>  these caps and the ground are tight and clean.

This is exactly what I found in the Gates 5 box at WFIF a number of years 
ago. The 60Khz PDM signal was leaking out and mixing with the carrier, creating 
spurs 60Khz above and below carrier. My guess is, those caps were never 
designed to handle ripple at 60Khz, so it "cooked" them internally!

Of course, when I contacted Harris' tech Support and told them what I found, 
the reply: "We've never heard of such a thing before! Can you send the caps to 
us for testing?"

Which I did... and NEVER got a reply. Not even to a follow-up e-mail.

Willie...