Tube Audio Design TAD150 Signature Preamplifier Servicing

I have one too...on a shelf.  Works fine, sounds great, with one exception..the remote volume no longer responds. The remote works, but the the volume electronics doesn't receive the signal or can't act on it. I tried the same post you're trying here a year+ ago..no response. I had a local guy that does a lot of work on audio equipment and he said.."beyond me" and declined to dig into it. 

It really is a fine sounding preamp. If I do use it now, I run it through a passive pre that has remote volume. 

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?

Audio Classics in upstate NY has a really good reputation. If they can't help, they'll probably recommend someone that can.