Yamaha Motif ES8 Power Board

Hello all.
A Yamaha Motif ES8, my son’s synthesizer. We bought it in Japan for him new. I still live in Japan, but he now pretty much lives in the UK full time. Before I ship it to him I need to change the power supply board for 240v version. I know he could get a step down transformer as last resort.

(1) Are these power boards still available?
(2) Was there a self seeking voltage board for this model that worked anywhere in the world, which would be a better solution.

Best regards