Tact amplifier repair

My Tact Audio S2150 XDM did not survive my recent move to a new house. Does anyone out there know a repair shop?

Seems that Tact is out of business, and my warranty has long since expired. It's a good time to get a new amplifier, but of course I'd like to fix it first so I can sell it!

Symptoms: when I turn on the amplifier, the screen lights up immediately, but it doesn't load anything. It shows:

D 1 Tact Audio
M/S S2150 X 00.1

No response to the remote control (even after putting in new batteries). No response to trying to change digital inputs or press any button other than the power button.

Could be as simple as a blown fuse or loose connection. Any suggestions!

Thanks in advance!
Jonathan