H-CAT DAC

Sorry about the trouble.  That's interesting that Roger has not responded.  I can tell you that he's still in circulation, as based on a bunch of back and forth here in another thread about his creating the best amplifier made, I paid him a visit this past November to assess his claim.

Aside from that, I'm guessing the DAC employed a universal remote.  You should be able to pick up a replacement at a big box store or online, and with some (or a lot) trial and error, find the correct codes for the DAC.  Poor consolation I admit, but you should find success in getting the car back on the road

@trelja My HCAT remote also wasn't working for the preamp that I have.  I emailed Roger around Nov/Dec and he quickly replied me that he could send me a part (the buttons skin), only to suddenly disappear after I told him where I am located.  Since I cannot use a universal remote for the preamp, after that I continued to email him for another couple of months unitl I gave up.  I wanted to buy more products from him, but how could I?  

FYI Roger Paul passed away recently, no idea if anyone else has taken on the business
https://forum.audiogon.com/discussions/roger-paul-has-passed-away?highlight=Roger%2BPaul

@folkfreak thank you for providing the link.

In retrospect, I should have remembered to update this thread after hearing of Roger's passing.  I apologize...

Thanks @trelja and @folkfreak for the update. May he rest in peace, I liked the HCAT preamp a lot, and I don't know what to replace it with now...