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The buzz control does have some effect. It varies the volume and only in a small range is the audio loud enough to hear and it does eem to affect some buzz. It does use a 3BN6 for audio demod. But the problematic hum sounds like 60/120Hz hum, like it had bad electrolytics on the power side or something. Although I do have to slightly off-tune the fine tuning to get sound, so maybe if it was all aligned correctly the hum would disappear. Any other causes of hum to look for?
Think there is any chance of gluing the core of the broken slug in the audio to a diddle stick? I only need to adjust it one more time. Although the slug is probably stuck, which in turn is why it got broken. Sigh. Anybody got a replacement transformer?
Jonathan
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