On Wed, 27 Dec 2006 08:14:42 -0700, (Ken G.) wrote:

This set now works just fine but after around an hour the HOT tiny heat
sink gets to hot to keep a finger on .

I had some similar problems with other TV brands.
Regularly the HOT was not driven properly.
In one case the electrolytic capacitor to the base had lost capacity,
in an other case a solenoid parallel to a resistor to the base was
not soldered correctly on one end.
The HOT can survive only if it really works as a switch, ie, strong
input signal and short pulse rise times.
Good luck,
H.