1960s vintage 9" GE B & W Portable TV has no Picture

[Captainclock]

Originally Posted by dieseljeep

Horiz out is a 18A5 octal base and the damper is a 17H3, IIRC, a 9 pin miniuture The 18A5 is similar to a 25AV5.
It seems that this is the only set, that used these tubes. Two other strange tubes are 10C8 and 12CT8.
Leave it to GE, as they owned their own tube plant.

Yeah and I tested all of the tubes in the unit except for a couple of the tubes and they all tested excellent on my emissions tube tester which means that the tubes apparently have low hours on them. All of the tubes inside this TV set are all the original GE Tubes (except for the 1V2 rectifier tube which i swapped out for a NOS Motorola 1V2 tube I had laying around in my tube stash.)