Bob; I took out the power transistor with the 3 leads soldered and
can't find one now. Rat Shack does not have them and still looking on
net. It was real hot if that was proble, Allaround it seemed
blackened from heat but not blown. Hope that is what it is. Not even
sure of name. Would sit under the soldered side under the power
transformer and from the underside near the largest can capacitor and
has a tri axial lead near the squelch wire solder point. It has a
hole on top but no heat sink of any kind to disapapte that kind of
heat. Says from what is readable Texas Instruments and some number
but no rating etc. Any more help here. nick