[MeanDumpsterCat]

Thanks i'll definitely give that a look.

I noticed there are some capacitors coupling the grids of the oscillator and they appear to be the silver "Suflex" capacitors which I heard rarely fail but tend to intermittently go completely open circuit when they do.

This was an intermittent fault before but now its permanent. Wondering if they could have anything to do with it.

I'll check the HT voltages first but I have my suspicions about those caps based on what i've read on some old threads here.