The DC CT100

[Zenith6S321]

I bought the CT100 dsuski had for sale. The owners are a very nice young couple in DC with a 1915 house that is drop-dead gorgeous. Kudos to them for saving the CT100! I brought my Sencore CR70 to test the CRT and LC75 to test the flyback.

The CRT: The filaments tested good for continuity. My CR70 was only able to get up to about 6V driving the filaments but they glowed nicely and did not burn out. I got no short indications. The cutoff responded very sharply but I could adjust it within the cutoff block. The emission then showed no meter movement. Increasing the cutoff at that point did show emissions. Is this an indication of a gassy CRT? I need to re-read my CR70 to see if they mention this type of indication.

The flyback: I pulled the focus and HV rectifier tubes and did a ring test. It read 9 rings with the yoke still connected. I think the flyback is good.

We agreed on a price with the strong possibility that the CRT was gassy and that the flyback was good. The cabinet needs work but its recoverable. The chassis does not appear to have had much work done on under it. Pictures attached. Tomorrow I will get it out of the back of my SUV and see if I can take a look at the getter. I suspect it will show air.

I do not see this CT100 on Pete's list. It is #8001214 with cabinet #81.

Dave