I have a line on a working 576...I'm going to look at it this Friday.
I know there are problems with the HV transformers in the 576 but I think later units corrected it with a redesign?.
Anyone know a safe cutoff for bad / good serial #'s? This one is SN B315461
Is there anything else I should be on the lookout for on a used 576 besides the HV xfmr and the usual broken knobs/bent shafts?