My First Predicta

[Chris K]

Originally Posted by bandersen

Well some of those readings are way off. I'd start by tracing out the 12CA5. Is pin 2 grounded accidentally? Pin 2 and 5 should be connected together so you should have gotten identical readings but you didn't?

Also check that the primary on the audio output transformer is good. That supplies the plate voltage to the 12CA5

Audio output primary is good, 285 ohms. The reading on pin 2 is correct at zero. Checked several times. I thought I might get away with not removing the board but it's looking like I might need to.