[AMPS] TS-940 and SB-200

[Barry Schieferstein]

Pete nailed it!  The rectifier diode was bad therefore there was no voltage
to the relay.
Thanks to all of you who gave me suggestions.
73,
Barry KW8W

> The relay circuit in these Heath amplifiers is simplicity itself.  A
> half-wave rectifier takes voltage from the filament/bias transformer,
> rectifies and filters it, and supplies it to the relay and also as cutoff
> bias to the tube.  The center of the RCA connector marked Ant Relay should
> be at -110VDC (or thereabouts) relative to the chassis ground.  If it
> isn't, the troubleshooting should be very simple., and I would suspect the
> rectifier diode first.

> 73, Pete N4ZR
> www.qsl.net/n4zr
>
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