Magnavox CT-234-B chassis TV set. I think...

[nasadowsk]

Ok, I picked up that REAL early Maggie the other day. Out in the middle of NOWHERE, Pa....

It's heavy table set - 85 lbs.

Removing the chassis is a fun task.

* Remove the screws. It won't come out.
* Pop the back. No interlock - it's on the HV cage cover.
* Hey! There's a few catches for the whole FRONT of the set!
* The front tilts out an inch, then lifts up, revealing the front of the chassis + CRT.
* Still won't come out. Bummer.
* Let's pull the CRT - it's easy, unhook the strap around it, undo the ion trap and connector at back - it slides right out. Easy. The strap is spring loaded, you just stretch it around the tub like a bungee cord.
* Two "hidden" screws in the corner release the chassis, finally.

The flyback looks like an early DuMont or RCA 630 type.

The CRT was a 12LP4 - the listed types are 10BP4, 10FP4, 12KP4. This was a Magnvox branded tube, but the quality looked a bit rough. The getter and base are still intact though.

The set appears to have 4 video IF stages, 3 audio IF stages, and a 1N34 vid detector. A single 5U4 powers it all.

Focus is via electromagnet.

I'll have to remove the HV box covers. It's *filthy* inside. The horz output, osc, damper, and rect are in there. All the usual suspects for an early TV - 5V4, 1B3, 6BG6, 6SN7.

Except for the recieving stages, there are few miniture tubes involved.

This set's weird - but it looks like it could be really nice once it's working. It's pretty service friendly one you figure out the trick to pulling the chassis - the HV box proveds a nice solid support to rest the chssis on it's side and as a bonus, the mounting tab on that side detaches so the thing sits flat!

Looks like the normal electrolytics and paper caps blown stuff - doesn't look too serviced though.

Replacing the 'lytics is gonna be 'fun' Not much room to hide new ones - I might have to 'stuff' the cans. I wish someone made new, unstuffed cans that your could stuff, seal, and install. - saves having to cut the old ones open, which can be a pain in the you know what.

This set looks like it's gonna be real fun.

Anyone out there have the Sams? It's an early set pre 1950 or so. No Channel 1. if anyone finds something close, I'll scan the tube shart on it to doublecheck.

Thanks!