Yup RCA me thinks. Those donut chassii were dogs. Still a few around in the 70's. At most we would make them "run" again but have the customer sign off
for ZERO warranty. I think they were one reason for Zeniths success. They
were so easy you would try to sell them above the rest. At a Mom & pop
I did everything from cleaning the toilet to the pay roll. You do what you can
to make life easy.
Zeno
LFOD !