Service for Thor Audio amps

I have a pair of TPA-30 monoblocks that looked and sounded great but one of the amps has developed an issue and I am hoping to find either someone who still services them (I know they’ve been out of business for a while) or a schematic to help my local tech service them. 
Can anyone help me with this?

Bumping this because while I was able to figure out my issue from a year and a half ago, now I have a more significant issue and am wondering if anyone still services these or even has a schematic. I love the sound of these amps and don’t want to crack open the chassis myself as that’s not likely to end well…