[TinCanAlley]

Originally Posted by DaveWM

IF a transistor works in one board and not in the other in the same location, I would say the transistor is ok, I am a little confused on this, make sure you are testing correctly reverse the E to C leads, should read open both ways

BC open one way, low resistance when leads reversed.
BE open one way, low resistance when leads reversed.

you need to make sure you are doing this right. But I dont really understand why you are futzing around with the horz board. Check the diode in the blanking circuit.

The horizontal board gives me a known bad circuit that I can comfortable work with for practice.

The transistor from the NOS board is the exact same NPN as on the original board. I put the meter in diode mode and connected the positive to the base (the E, B and C are clearly marked on the metal tab). I connected the negative lead to the collector and got a reading. I then connected the negative to the Emitter and got a reading. I then connected the positive to the emitter and the negative to the collector and got nothing. I reversed the leads and got nothing.

I put that transistor back on the board, install the board and the TV won't fire up other than sound. If I take the transistor from the old board and put it in the new board, it works like a charm.

I guess I'll just let this one go. Since I seem to be doing it correctly, maybe there's something else wrong Maybe the sockets don't like the legs of this one (they are gold plated unlike the older, working one). Maybe it has a thing about flashy transistors.

Anyway, I'll just wait for the scope and my brother.