1956 Sears 24" Suburbanite Combo

[Crist Rigott]

Today I continued to recap the chassis. This TV has a couplate for the Vertical Integrator. I remembered I made one up that seemed similar on another project. I checked my docs and sure enough it was identical. When I made the first one up, I made 2 boards. I dug around and found the second board. I then proceeded to make up a new V. I.

All that's left to do is the Horizontal section. That should be done tomorrow.

[dieseljeep]

Originally Posted by Crist Rigott

And now the insides. The TV chassis number is 528.51020 and the radio chassis number is 528.48600. BTW, I'm looking for some service data for that radio chassis.

The TV is a 16 tube chassis that uses a transformer only for the tube heaters. Sams 368-14 and Riders Volume 21 page 524 has the service data for the TV. I haven't gotten to removing the record player yet and that will be after the TV and radio are done.

The TV uses a 24YP4 picture tube which tested good after a little while burning in.





After the car wash!







Even the HV cage was pretty clean!





I've never have seen this type of tube shield before. They remind me of clam shells.

Regarding the tube shields, it was a U/L requirement for captive tube shields in a hot chassis set. It actually was intended for a metal cabinet set, where the shields could be left off and fall between the chassis and cabinet.
They just built the chassis, regardless of the cabinet material.

[Crist Rigott]

That makes sense! Thanks.

[Crist Rigott]

There is 1 "Special Part" that is used in the H. Osc. section. It is a .01uf 20% 600VDC tubular cap. Both Riders and Sams list this 1 cap as a "Special Part".

It goes across a couple of terminals of the Synchro-Guide Transformer. It is labeled C46 in the Riders schematic and C37 in the Tech-Master schematic. I remembered that my Tech-Master TV kit uses one of these and I looked up what it used. It was just a tubular film capacitor.

Can I replace this 63 year old part with a modern day film cap?

Here is a picture of it on the transformer along with Riders schematic and the schematic of the Tech-Master TV last.

Thanks.

[trinescope]

I'm pretty sure a modern film cap works just fine in that position. I once made the mistake of putting a ceramic disc capacitor in that place in a 8TS30 and the horizontal frequency drifted all over the place but stayed steady with a mylar cap installed there instead. I think it was a better quality part than the usual wax coated paper capacitor that made it a "special part".

[Crist Rigott]

Erich,
Thanks for the quick reply. I went ahead and use a modern day film cap. But just in case I kept the old cap.

See you Saturday?

[Crist Rigott]

Well that pretty much wraps up the main chassis. I still have to clean the pots and tube sockets.

Then on to the tuner and control panel pots.

Looks like Saturday will be the big day with the first power up!

[Tube TV]

Wow, that's a really nice combo, I wish I would run into one myself.
The work you are doing looks top notch. I like how you made the couplate for the vertical integrator.

[Crist Rigott]

Originally Posted by Tube TV

Wow, that's a really nice combo, I wish I would run into one myself.
The work you are doing looks top notch. I like how you made the couplate for the vertical integrator.

Thank you.

[Crist Rigott]

Today I cleaned up the tuner switches and lubed the shaft. I cleaned and lubed the controls and wired them up.

The yoke cover will need to be redone. Not the complete cover but just the sides. I'll come up with a good method.

I powered it up and it worked right off the bat. I had to adjust the controls but it is working pretty good. Sound is very good too. I used my test CRT.

HV is good at 11.5Kv. I think I'll try another 1B3GT tube.

[AlanInSitges]

That's awesome!

FYI Bob Andersen has a couple of videos showing how to rebuild yoke covers out of PVC. He's probably got pictures on here someplace too.

[dieseljeep]

Originally Posted by Tube TV

Wow, that's a really nice combo, I wish I would run into one myself.
The work you are doing looks top notch. I like how you made the couplate for the vertical integrator.

If you want a really nice combo, I have a high-end Magnavox 24" B&W combo with a good CRT and the big amplifier. I picked it up for the amp, but it's too nice to scrap.
It depends where you live! It's located in S/E WI.

[dieseljeep]

Originally Posted by Crist Rigott

Erich,
Thanks for the quick reply. I went ahead and use a modern day film cap. But just in case I kept the old cap.

See you Saturday?

When I did a lot of servicing, I used to carry .01/600V Sprague Orange Drops in the caddie For the RCA B/W sets. They worked just fine.

[Tube TV]

Originally Posted by dieseljeep

If you want a really nice combo, I have a high-end Magnavox 24" B&W combo with a good CRT and the big amplifier. I picked it up for the amp, but it's too nice to scrap.
It depends where you live! It's located in S/E WI.

B.C, Canada. If I was closer I'd love to have one.

[Tube TV]

Originally Posted by Crist Rigott

Today I cleaned up the tuner switches and lubed the shaft. I cleaned and lubed the controls and wired them up.

The yoke cover will need to be redone. Not the complete cover but just the sides. I'll come up with a good method.

I powered it up and it worked right off the bat. I had to adjust the controls but it is working pretty good. Sound is very good too. I used my test CRT.

HV is good at 11.5Kv. I think I'll try another 1B3GT tube.

Wow, the picture sure looks nice, you are sure making quick work on the chassis.