Turn off all your equipment and disconnect all interconnects and cables. Clean all the contact points and then reconnect all the cabling. It also might help to have your ear canals cleaned.
As to the amp losing steam, be sure to only use distilled water in the boiler, if not, there could be trouble ahead and trouble behind.
As to the amp losing steam, be sure to only use distilled water in the boiler, if not, there could be trouble ahead and trouble behind.