Jimbo 165, Sounds like a thermally intermittent component. Probably a transistor or IC, I
would get a can of 'freeze spray', open up the radio, so I could see the circuit board
(from the top) and begin around the driver/final area and spray one component at a time,
quickly and see if that one sprayed component makes it start transmitting again, if it
does wait until it quits again and spray it again, to verify it bad, replace it and enjoy your
radio again. I had one of those units many years ago and enjoyed operating it alot. Good
luck locating the bad component. I forgot, make a shield from a small piece of paper to
avoid overspraying on several components at once, in other words try to isolate your
spraying to one component at a time. Let us know how you do.