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Bringing this back to life. The thread, not the TV.
So, I have a bit of snow on the screen. It doesn't look like regular snow, but still, it's more than a white raster I had before now that I changed the diode.
I've been all through the IF stages without seeing anything amiss, and I'd like to try injecting a signal at the various stages and see if I can pinpoint where the failure is.
When I connect the RF output of my Philips generator to pretty much anywhere in the IF strip, the screen goes black. I suspect it's either impedance or capacitance adding to the circuit that's causing this to happen.
So, are there any best practices for coupling this thing to say the grids of the IF tubes?
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