On Tue, 13 Mar 2007 10:53:19 GMT, (Don Pearce)
wrote:

Many transformers don't have any means of tightening them - the core
laminations are clamped together by the bent metal cover. In that case
you may need to find yourself a small G-clamp to fit over the lams,
and just leave it there.

I have previously 'cured' buzzing transformers by dunking them in a
tin of varnish. Is this out of fashion these days?

Anyone trying this does so at their own risk!

--
Chris Isbell
Southampton, UK