Are these things I should consider bad

[TinCanAlley]

I do have a question, though. On the schematics for the H. Sweep it says that point is T5 and is 63.7V. However, the waveform shown for that point says it's 120VPP. How is that? How can you get a 120V PP with a driving voltage of 63.7V?

This is the point I had a 160V PP. That will be my first recheck tomorrow morning. Today is a complete mess and no time for the poor set.

[N2IXK]

Originally Posted by TinCanAlley

I do have a question, though. On the schematics for the H. Sweep it says that point is T5 and is 63.7V. However, the waveform shown for that point says it's 120VPP. How is that? How can you get a 120V PP with a driving voltage of 63.7V?.

The 63.7V is the DC voltage you should read if you measure that point with a DMM. The 120 Vpp is the amplitude of the AC waveform present.

The waveform looks to be roughly 50% duty cycle (pretty close to a square wave), and if it oscillates from 0 to 120V peak, the average voltage would be around 50% of 120V, or somewhere around 60V. 63.7 sounds like a perfectly reasonable reading to expect on a DC voltmeter.

Did you ever sit through that scope training course? Real basic stuff like this really needs to be understood before you can really hope to be able to repair a TV except by sheer luck...

[TinCanAlley]

Originally Posted by N2IXK

The 63.7V is the DC voltage you should read if you measure that point with a DMM. The 120 Vpp is the amplitude of the AC waveform present.

The waveform looks to be roughly 50% duty cycle (pretty close to a square wave), and if it oscillates from 0 to 120V peak, the average voltage would be around 50% of 120V, or somewhere around 60V. 63.7 sounds like a perfectly reasonable reading to expect on a DC voltmeter.

Did you ever sit through that scope training course? Real basic stuff like this really needs to be understood before you can really hope to be able to repair a TV except by sheer luck...

Yep, I watched it. I was pretty much on the right track and just needed a few visual instructions to understand the rest. I can now do all the basics and am learning more each day.