William Sommerwerck wrote:
My memory (which might very well be wrong) was that one of the principal
sources of X-rays was the HV rectifier. GE got into trouble over excessive
X-radiation from their HV rectifier -- though the tube was situated such
that the kids would have had to stick their feet under the set (!!!) to
receive any significant dosage.

Specifically, it was a GE-made 6BK4 that caused the problem, so it ended up
in all brands of sets via repair.

I vaguely remember that it was all alpha radiation, but don't take my word
as gospel.

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http://apnews.myway.com/article/20080331/D8VOMVT02.html
Chelsea Clinton Criticizes Bush in N.C.

Talk about "dog bites man"...