Looking for advice - Mola Mola Kaluga amp has no output

Hello all and happy Easter. Hoping to get some tips from experienced Agoners. My Mola Mola Kaluga is giving some trouble - no sound. It is powering up but is cold to the touch even after hours. We were out on a weekend vacation and when I returned it was on standby mode (maybe power failure). It is plugged into my PS Audio Stellar Powerplant 3. I am completely puzzled because it is powering up fine, i changed the fuse as well, to no avail. Any clues from Mola Mola owners out there? I have written to Mola Mola and awaiting response as well. Thanks in advance for any help!