I do component level repairs, and I'll tell you ANYTHING is repairable, just incurs different levels of effort. Worse case, you can build a manual panel with a set of switches (and a little electrical knowledge). Look at last page of this manual:
https://eqsystems.us/wp-content/uplo...itch-10-13.pdf
Power on pins 1 &11, left front goes down. Add pin 9, it goes up. This is not best option, but my point is, retrofitting is cheaper than total replacement. Have you checked local electronics repair shops?