Also check the other relay in the audio section (not just the antenna relay)
Make sure pins 1&2 on the accessory jack are shorted.That allows heater current to flow.
Mike
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-------- Original message --------
From: panzermkv@...
Date: 7/31/23 6:55 PM (GMT-07:00)
Subject: [Yaesu-FT-101] FT-101B Will not go into transmit with the mic or MOX switch
Hello all, I recently wanted to try my hand in getting an old rig. I bought an FT-101B on ebay, untested of course.? It does receive pretty good on the bands but it will not transmit.? The mic I have was tested on another Ft-101 and it works.? I've taken it apart, pulled out all the boards, cleaned it as much as possible. I didn't see any burnt components.? I took the relay out of the high voltage box where the tubes are and cleaned the contacts.? I touched it with 12v and it engages.? I checked the light bulb in the back and it reads good on an ohmmeter. The tubes look good.? I cleaned the MOX adjust knob.? My question is which board or part should I look at first.? I'm kind of at a loss where to start.? Thanks in advance all.?
