Early 1949 Projection on CL What kind is it?

[Eric H]

I have one of these, not sure if it's the same model but it's the same chassis, think mine's a 48 model.

It wasn't any more difficult to get the chassis running than any other old set, the only difference really is the HV tripler circuitry and that's not complicated. Most of the chassis is common RCA parts, not sure about the Fly or Yoke but they look ordinary.
The other thing is it has three different chassis plus the CRT barrel which makes it awkward to work on.

The screen is a Fresnel Lens, plastic with concentric rings to distribute the light, as long as it's not broken or badly discolored it should be fine. (this one has some stains but I bet it would clean off).

5TP4's are obtainable, they can be tested with any regular CRT tester, the screen does turn brown with use so the darker it is the more it's probably been used, dark phosphor will still make a perfectly acceptable picture though if the emissions are good.
I got lucky and my set has a nearly new CRT with no discoloration.

The only other thing that could get expensive is if the parabolic mirror needs resilvered. Despite the rest of my set being a water & rodent damaged mess the mirror was in good shape.

They are huge and heavy.