Are these things I should consider bad

[zeno]

Originally Posted by TinCanAlley

So the flat line I see is correct. About the only thing I can do is move the coupler to GND, move the trace line to the bottom of screen, set the voltage/div, move the coupler to DC and then measure voltage after the trace line moves up. That's okay with me.

If I see ringing on the base of a transistor, do I look at the collector to see if the ringing has been amplified? Also, I seem to recall someone suggesting I ground the base of the ABL transistor to see if the jail bars go away. The voltage on the base is under 1V, so is it okay to ground it? Doing so won't short anything out?

Ringing may or may not be amplified, depends on circuit.
Grounding the ABL base will kill the ABL. If the jailbars are getting
in there they will go away. You may or may not see other changes
without ABL.
B+ lines should be clean, sometimes there is a very small amount
of hash but nothing like 5% or 10% of voltage.
With this problem you have to take things in order.
1) be sure all B+ are clean & correct
2) scope starting with the detected video from IF strip pin 5
3) work your way to the right through video til the
waveform goes "bad" thats where it gets in.

73 Zeno