On Thu, 8 Jul 2010 13:18:54 -0500, Brian Koontz wrote:

>I'm thinking the next approach would be to try and isolate which board
>might be grounding the signal...

Congrats on the progress. First, I would suggest reading the theory of
operation section in the manual and familiarize yourself on how the rado is
supposed to work. Then check to see if all of your oscillators are running
where they are supposed to. There are test points on traces on the bottom of
the parent board, refer to the alignment section of the service manual. Once
you are sure the oscillators are where they should be, you can start pumping in
test signals from a generator at various points.

73

-Jim


--
Ham Radio NU0C
Lincoln, Nebraska, U.S.S.A.
TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, 
HyGain 3750, IBM PS/2 - all vintage, all the time!

"Give a man a URL, and he will learn for an hour; teach him to Google, and he 
will learn for a lifetime."

HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/
http://radiojim.exofire.net
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