Quoted from steve8091:When I say that I 'tested' the transistors, I just checked for continuity between the tabs and the ground braid, and they all have it.
So when it comes to PNP transistors like the 8 TIP36a transistors on the aux power supply, they are not wired the same as a NPN transistor because they work in reverse. You checked from the metal tab (collector) to ground and had continuity, this is correct as you can see in my pics below that the collector and the metal tab are connected internally in the TIP36a and the diagram of the sling shot circuits Q-6 and Q-8 on the aux power supply have the collector tied to ground (downward point arrow).
The last pic is a TIP122 on the CPU board. This is a NPN transistor. In this circuit the emitter is tied to ground instead of the collector. So when checking the ohms on this transistor metal tab (collector) to ground you will get .600 meg ohms or larger.
I hope this makes sense, I'm not the best teacher.
tip36a (resized).PNGtip36 (resized).PNGTip 36b (resized).PNGTip36c (resized).PNG