[R-390] AGC Problem

[Jon L. Turner]

Hello Gang,

I have a R-390A by EAC. It is my favorite receiver of
all the receivers that I own. A few Saturday mornings
ago when I turned it on the signals were distorted and
did a little check. I found that I had no AGC. I put
another IF Deck in to see if I could isolate the
problem and the receiver worked fine.

What I have found is that the 180 volts that is to be
on pin 5 of V508 is not there. The resistance of 65k
is not there also. I am seeing the 65k the other side
of Z503 transformer but not on the pin 5 of V508. Pin
5 of V508 is connected to one side of the transformer.
It is looking like Z503 has opened. The voltage and
resistance readings are out of the Y2K Manual.

Any thoughts would be appreciated.

Thank you in advance!

Jon

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com