Dschoener, I'm curious. How do the ESL-63s compare to the later model 989s?
QUAD 989 problem.
One of my QUAD 989 ESLs has developed a problem. With no signal input, there is a squeeling, sputtering sound which meanders quickly all over the panel. I don't see any signs of sparking, so I'm assuming that this is a power supply, rather than a panel, issue. Does anyone know a source for 989 schematics or other service info? Any help or leads will be greatly appreciated.