Philco 7053 CRT Tester

[Winky Dink]

This an item I picked up last August. It cleaned up nicely, and I'm hoping it could be useful for a quick CRT check when buying a TV in unknown condition. I have a couple of shelf-dwelling TV's to try it out on.



I have no documentation for the unit, so I cracked it open to see what I could figure out. There were only three "usual suspects"--two resistors and a paper cap--so I replaced them with on-hand components. I cleaned the single rotary switch and the pots with CRC electronic cleaner. Both pots seem to work correctly. The transformer is marked 6.3V and 220/0/220V with 117V line. I put it on a variac at 117V, and I got 6.7 and 240/0/240.
I haven't checked the NE45 bulb, but it does flicker on when I turn the function selector switch.



I posted this request on the Philco Phorum, but the response there shows only that documentation for this tester is hard to find. So, I'm first asking if anyone knows where I can find instructions for the 7053. I've looked around, but haven't seen anything available except a couple of units with instructions for sale at some previous time.

If no instructions are available, can someone give me a clue how use this thing? My immediate goal would be to get to the point where I can connect it to a known-good CRT and get an appropriate result.

A better view of the controls:



Thanks much.

PS: My Nationals lost the playoff, but worse than that--THE GAME WASN'T ON THE RADIO!