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1965 zenith COLOR!

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#29

10-15-2012, 12:00 AM

Penthode

VideoKarma Member

Join Date: Jun 2009

Location: Kitchener/Waterloo Ontario Canada

Posts: 1,463

The rattle could come from the power transformer if there is a short on the B+ or if there is a shorted rectifier.

Then again I have seen bad HO tubes which have a short oftem accompanied by flashing. A bad tube could perhaps put a heavy load on the B+ which causes the rattle.

What is the source of the tube? Was it tested to be good?

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