Games, the
Gottlieb, 1984Repairing a Gottlieb system 80a power supply, and in reinstalling the Q3 transistor using new compound shows it's shorting to ground when it should not. Curious since this didn't have any other non-conducting film or anything when I took it apart. (reference photo - my test failed)
744px-Transistor-to-ColdPlateContinuityTest (resized).jpgWhen I replace them, i've had a thin rubber like membrane that goes between. let me see if I can find it. Doesn't the outer case go to the plate and the legs do the others? base emitter collector.
EDIT:
these. not sure if this is the right size but.
Standard Die-Cut Thermal Transistor Insulators
Package size: TO3
Number of lead holes: 2
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