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.
dschoener
Dschoener, I'm curious. How do the ESL-63s compare to the later model 989s?
Hi Rrog,

Bass extension is the only significant difference I notice. I was using subs with the 63s. I don't feel the need to use the subs with the 989s. But then I don't listen to much organ music.
Dischoener,

My Quad 989 is emulating yours. There's popping and beats from one speaker. Can you please tell me what you had to do to repair yours?
Thank you.