My Rotel RSX-972 surround sound receiver has no power, the repair centre cannot isolate the problem and they do not have a service manual to guide them,a service manual would be handy??

I had the same problem with my Rotel RSX-972. The problem is the capacitor that keeps the setting memory charged has gone bad. So after power off memory is lost, including input setting for each channel. That's why there's no sound.

You'll have to hook up the receiver monitor to the TV and set them again via the On Screen Display(OSD). Work around is keep it powered up and use remote to put receiver in stand-by. Permanent fix is to contact Rotel on replacing the capacitor.

Unless yuo can find a Rotel authorized service center, you are not likely to find any service information. These units should not be difficult to repair. Their designs are pretty much standard with a few twists. Any shop that handles audio repair should be able to resolve this. If not, please post your location and I'll try to locate a shop for you.

Also, are there any indications that the unit is trying to work at all or is it completely dead?

Thanks,
Dan