Dumont RA-113 (B3) restorations

[bandersen]

I quickly solved a few issues. One dial lamp was burned out and the other two had dirty contacts.

The focus control has a large "dead" area. Setting it in a good area gets the sync working better and the brightness/contrast improves. However, the power resistor I'm subbing for the focus coil is now roasting.

Eye tube is totally dark.

Horizontal still freaks out periodically and no sound for TV reception. I'm thinking the sound alignment may be way off.

Also discovered the tuner mounting screws very all very loose and reception cuts out as the fine tuning is adjusted. I bet it's very dirty inside. it will be unmounted,cleaned and lubed.

I'll clean all the controls and tube sockets and swap in some fresh tubes.

Not the worst first power up, but still many issues to resolve.

Need to swap the horizontal yoke leads too.