John -
Check the BIAS supply in the AC-3. Probably just bad filter cap(s).
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
John Gartman wrote:
I have a tr-3 that I was warming up and the mike locked on. When I came back to a burning smell I
shut it down. I found that the transmit/receive relay had melted part of the white plastic
shield. I removed the cover cleaned the contacts and when it starts to get warm it closes the
relay and will not receive. If I key the mic it locks into transmit mode, I do not think it
transmits either. It looks to be over my head in repairing by myself, so I am looking for advice
should I keep trying or find some one to repair it?
I really like this radio
John Gartman
AG6GL
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