Problem with Marantz Amp!

[toe471]

Hi guys

I know its not the type of question to ask in here but does any 1 know a bit or two about amps?

My amp keeps cutting out every so often when watchin a film, its a Marantz SR-5300, seems like an earthing problem.

Any help would be appreciated u wonderful people!!!!!!!!!1

PS
wheres TV Tony disappeared too??