I guess I should have changed the power supply tubes earlier... stupid me... Power amp shuts down when ever I take the pre out of mute. There is a component next to the second 6h30 (the bottom one to the right) that smoked. I assume that is a screen resistor? At the dealer now to get repaired and retubed. Booo!
Not 100% sure, but I remember hearing from some owner something about a resistor was put in place to protect the electronics when the power tube goes out. So this may be normal. Best thing is to call ARC to verify.