[TinCanAlley]

Originally Posted by DaveWM

you read the base voltage, look for the emitter voltage this would be normal mode no signal (raster).

Yes I noted the connection to the convergence board, and no I do not know if that is related.

1st things 1st get that emitter voltage my guess is changing from normal to setup alters those voltages as a means to bias the transistor to cut off more when in setup mode.

as far as scoping I would start by seeing if the sam wave form matches, if it does then thats a dead end, if not then you would just start working back towards the flyback. That horz pulse at the convergence board will will prob look a lot like the one you see in my video which is also a flyback pulse for convergence. PP may be different but I suspect the shape will be about the same.

Okay, the emitters could only be measured at a point on the other side of the 180ohm resistor (unless I flip her over and removed the stand and cover). Measuring though the 180ohm resistor gave me 14.3V normal and 15.5 setup. Is going through the resistor okay, or do I need to go directly to the emitter lead?

I feel really stupid, but I can't get the scope to do what I want. I connected it to the S test point though a 10x probe in 1x mode and couldn't figure out how to adjust the darn controls to give me a usable waveform. If you look at the pic I posted in the thread asking if the scope was okay, could you step me though setting the main controls for it? The manual it came with is basically useless, at least it is for me. I'm sure if I can be pointed in the right direction for setup, I'll be able to adjust from there for other points.

Thanks!