How to troubleshoot IF strip

[miniman82]

Originally Posted by Steve McVoy

A very simple test to tell where you may have a problem is to check the voltages on each IF tube. In particular, look at the cathode voltage. If it is right, it is a good indication that the circuit is working.

I haven't checked in a while, but when this first popped up I remember they were all pretty well in line with what Sams called out. Gonna recheck though, just to be sure.

You have subbed all the IF tubes and the mixer/osc tube, right?

Yep, that was the first thing I tried. It's like something decided to short all of the sudden, it wasn't one of those things where it got slowly worse. Just one day while I was watching it, the screen gets all garbage and nothing seems to make a difference. I just need to figure out a way to pin down the problem to one stage or another.