The seller told me the set came with a brightener installed. I peeled some tape off the base and revealed it's a Nat'l Video Corp 12LP4. Was this a CRT manufacturer or a rebuilder ?
I hooked it up to my CR70 and had weak emissions at first. However, after cooking for 10 minutes it sprang to life and now tests like new
Which makes me wonder why it had a brightener? Perhaps a repariman installed one to make a quick buck ? Maybe it was an attempt to correct some other defect like low HV ?
A good cleaning revealed a corrosion free chassis
I consulted some service info and found that I'll need to install a shorting bar to power it up without the radio.
The sets owner actually has the original paperwork including that shorting bar! It seems Admiral included it with the set. Unfortunately, he forgot to bring it when dropping off the chassis so I'll have to improvise.
The clipped black and white wires are power for the phonograph.
