"Franc Zabkar" wrote in message
...
I'm betting that C509 has dried out. I'd change C506 as well.

Replaced C509 and C506. Still no improvement.

Vertical size appears to be regulated by sensing the voltage across a
2 ohm resistor.

Do you mean the 2 ohm resistor that looks like it's in package (M601) along
with a 820 ohm resistor ?

Thanks!

Phil