There has to be a tech/shop that can take it on. I use to go to a guy in N Virginia (Bill Thalmann at Music Technology) and he could repair and optimize anything. Sadly he passed away a few years ago. Much of his bus was shipped in to him.
I too have TAD150 and love it. I worry about when it will need service. @nogaps , have you tried a universal remote, or a repair service?

