On Wed, 8 Aug 2007 10:37:35 +0100, tony sayer
wrote:

In my earliest work days I designed colour TVs. We had an X-Ray
detector permanently covering the bench, because if the line output
valve got a few too many volts, and a bit too much current, its anode
would start to glow red, and X-Rays would come flooding out.

Wasn't that the shunt stabiliser that did that?.

Hence the metal can in some sets?..

No, definitely the line output valve. After a few minutes the problem
was self-curing though - a slight popping noise, and there was a neat
melted hole at the top of the glass envelope.

d

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