1949 9PC41 projection set

[earlyfilm]

Originally Posted by Radiotronman

Yes I'm still working on it. Contrast and brightness controls have no effect and the horizontal is still touchy. I'm checking all resistors now in the video section.

Check your local/remote switch (the switch on the far right below the screen) for being in the wrong position and/or having dirty contacts and/or one of the leads not being plugged in.

Do any of the two pair of Contrast and Brightness controls do anything?

EDIT:
Get your contrast working before working on the horizontal sync. The contrast control shifts AGC voltage on the entire video IF strip, so that alone could be causing your sync issues.

If you have the remote switch unplugged, you must have a shorting plug in the empty main chassis connector. See the schematic for wiring the shorting plug.

Jas.