They're not that scarce...

[roundscreen]

Originally Posted by ctc17

Yes they did, 278.
Are you sure about them being weak? Everything I have read says they were superior to factory RCA.

I leave my HV cages open for the most part now so they run cool. I dont sit close enough to worry about x rays and I dont smoke or have dirty air that will cause a contamination issue. I also am very check cathode current and lower the line voltage to reduce heat.

Here is a picture of a Thordarson 278 flyback. My brother in law found this poor roundie in the trash a couple days ago. The chassis looks like it could be saved but the cabinet is rusted and the crt went to air. This is the first time I have seen a replacement fly for this chassis. The other two 16's I have in the collection have the original rca flybacks and they are working fine.
Ed