77 sylvania

[Reece]

Those sweep transistors give trouble from heat, I've used more heat sink grease between them and their sink and added more homemade aluminum fins with good results. Also crimped their leads a little like bobby pins to get more grip inside the sockets.

[DaveWM]

I have a spare board that donated the transistor from, there was also one on that board that was not orig, it was a different color body and had been bolted to the sink, rather than rely on the spring clip that held it on.