In Reply to: Vintage Plugs posted by mark.korda@myfairpoint.net on May 17, 2016 at 09:02:22:
you can tighten the 4 bolts on each corner of the trannies to tighten the lam stack, I would also see if any of the lams have the glue letting go and allowing them to vibrate, that would usually be the upper or lower ones. You may also find that using Q-dope, a high voltage insulating coating, will help the lams to keep from vibrating, only if they are flapping loose. I had a pair of power trannies on my Eico HF-30s that were mechanically pretty loud, I did all of this but it was the core buzzing, by using a pair of wedges on either side of the core as well as the above fixes I eliminated virtually all the hum, no buzz at all now (and the correct term is transformer "buzz" or buzzing when it is mechanical...)
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Follow Ups
- if it is mechanical... - gkargreen 09:43:28 05/18/16 (0)