i86time
Well-known member
The easiest thing to do is remove them (just do one at a time if you'd like) from the frame or unplug the connectors to the deflection board. Take the black lead of the DMM, place it on the case (collector), then take the red lead and place it on one leg (emitter or base), then place the red on the other leg. Then do the same with the leads reversed. Then place the red on one leg and the black on the other and then do the same but with the leads reversed.
I'm horrible at remembering what the diode readings should be from C to B to E, but these tests should either be open (OL or infinite) or between 0.4 to 0.7. If you have a known working transistor you can compare it to that. But if you see anything below that (usually 0v) or OL/infinite where it should not be, you have a bad transistor.
I'm horrible at remembering what the diode readings should be from C to B to E, but these tests should either be open (OL or infinite) or between 0.4 to 0.7. If you have a known working transistor you can compare it to that. But if you see anything below that (usually 0v) or OL/infinite where it should not be, you have a bad transistor.

