William,
thanks for the complement.
I am a firm believer in fix'in it myself. A classic tinker, but with a
doctors creed "first do no harm". I don't work on other folks stuff much,
just my own. I think I inherited native troubleshooting ability from my
maternal Grandfather. He was a real genius at fixing things... and the
things he fixed,,, stayed fixed. He passed away 15 years ago and I still
miss him. As opposed to my brother in law who is a classic non-handy man.
Wouldn't know the sharp end of a screwdriver. If its broke, pitch it in the
trash...... buy a new one... drives me nuts.

So back to the issue. Since this radio has a three gang AM tuner "front end"
board, I should be able to prove or disprove your/my new theory, by
injecting an rf signal somewhere between the Front end and the AM/FM board.
There is an interconnect schematic here

http://www.hifi-museum.com/lib/misc/...-sx-727_sm.pdf

on page 15. Where would you suggest I try and inject signal?????

thanks in advance

bob in phx
"William Sommerwerck" wrote in message
...
If I put a finger on r57, I get an am station playing from the
speaker. The station is 550 and turning the dial does not
change the station. I have no idea why this is so....

550 is probably a strong local station and you're getting rectification at
that point. The fact that changing the tuning doesn't change the station
pretty much proves it. It means that there's no signal from the tuner
itself
at this point.

It's nice to see someone making a systemic effort to fix the thing before
asking for help.