Wonderful! Many thanks. Invaluable advice, much appreciated.

Alan
"Don Pearce" wrote in message
...
On Tue, 13 Mar 2007 10:45:29 -0000, "AP"
wrote:

Thanks Phil - I'll take the lid off tonite and look for bolts.

Before you start tightening bolts, leave it on with the cover removed
until it is buzzing, then start gently pressing on bits (not delicate
bits of course) until you actually find what stops the buzzing when
you lean on it. Use a piece of wood or plastic so you don't get either
burnt or electrocuted, of course.

In all probability the buzz is associated with the transformer,
although it may not be the transformer itself that is buzzing, but
maybe something steel nearby that has come loose.

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.

d

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Pearce Consulting
http://www.pearce.uk.com