Thread: RCA 721TS Help
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  #16  
Old 11-12-2015, 03:36 PM
old_coot88 old_coot88 is offline
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Join Date: Sep 2009
Posts: 2,645
Often you can hear a faint buzz coming from the V.out transformer and/or yoke windings. If you can hear it, try turning the V.hold control stop-to-stop, and you'll hear the buzz change in pitch. The pitch change will usually tell you whether the osc. is running too fast or too slow.
This in turn can be a troubleshooting guide.
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