60s / 70s Admiral 'Instant Play' Portable

[dieseljeep]

Originally Posted by MadMan

A small update. I dug around in my tube box and found 4 empty boxes of the 33GY7A, and one occupied one. I also found a 23Z9, so I just plugged both of them in, but no difference was made.

Also, literally burned myself on the 23Z9.

I'll get back to this project for realzies shortly, I've been working on that radio.

I burnt myself on a 23Z9 in a GE 9". There was a shorted cap in the vertical sweep circuit. It's a low B+ set so the tube won't red-plate, but it's still running extremely hot. Find out what's wrong with the vert circuit or you'll destroy the new tube.