TAD 150 Signature preamp remote sensor out?

Thought I'd check here before searching for options.,

Just doing some listening and it appears the TAD 150 remote sensor (in preamp) isn't responding. Bummer.

I check my remote using my cell camera and it appears to be working fine. I tried putting new batteries in..no response from the 150. Pressing the remote buttons, I get no response from the preamp when trying to change modes (CD, AUX, Phono..etc) and get not respnse when trying to change volume. 

Going on memory.. I seem to remember Paul??? the designer/manufacturer was in the Chicago area, but passed away some years back. He wouldn't have been too far away to run it down to him..but..

So..anyone have any tips on getting it up and running again?  Things I can troubleshoot myself or shops that are known to be good in the Milwaukee area?