RCA B&W tv schematic
 

I have a small B&W rca tv and I need the diagram for it. Only part of the model number is readable and it is 8-PT-7... and that's all I can read of it. Anyone have a diagram? thanks, John

Hi John, that will be an 8-PT-703* or 8-PT-701*depending on the color and style

There are a couple different chassis used in these sets, I have a basic schematic for one of them uploaded here:

Right click and "save as"

http://www.vintagetvsets.com/schem/kcs100.pdf

I think the difference is in the vertical circuit so check and see if this matches yours.

You can DL the owners manual also: http://www.vintagetvsets.com/schem/personalportable.pdf

Horizontal off frequency
 

Thanks to Eric for the schematic. My set uses a 6CG7 in the vertical and also for the horizontal osc. I don't have one of these tubes in stock but when I swapped them I still had the horizontal way off frequency. Any suggestions as to what is the likely cause? Thanks in advance. John Graber

The first capacitor to change would be c167 across l155, sine wave coil. It's a .01 mfd @ 600 volts. Then see if the horizontal will sync. in. Of course, the set's going to need a complete recap. The set's a real hotbox and they needed a recap real early in their life.

Thanks
 

Thanks to Dieseljeep. C167 did it. Works now.