Ok. Let’s try this again…RCA 9TC240 Alignment

[Penthode]

And can you reduce the sweep speed slightly on the generator (little knob on the lower right from panel) so that the photos show a bright clear display for us?

And I should add that on late 40's RCA TVs, almost all have the 5.1 ohm series filament resistor to the 6AL5 discriminator. I have restored about a half dozen of these sets and four of the resistors were bad or became bad shortly after coming back to life. So be prepared if you loose sound to first look to see if the 5.1 ohm is bad.

[Chris K]

Originally Posted by Penthode

And can you reduce the sweep speed slightly on the generator (little knob on the lower right from panel) so that the photos show a bright clear display for us?

And I should add that on late 40's RCA TVs, almost all have the 5.1 ohm series filament resistor to the 6AL5 discriminator. I have restored about a half dozen of these sets and four of the resistors were bad or became bad shortly after coming back to life. So be prepared if you loose sound to first look to see if the 5.1 ohm is bad.

I will check the resistor. I tried changing the sweep rate on the 8601 and took a series of photos...they were worse

[Chris K]

About as good as I can get

[Chris K]

Manipulated the photo a bit

[Penthode]

Try increasing now the x gain to fill more horizontally the screen.

Congratulations. That looks much better now.

[Penthode]

To invert the x channel so the sweep is correct from left to right, select the Vertical menu and select INV.