“For sale yamaha SY77.
For parts or repair.
Fully working besides DM1 board.
I fitted new battery but there is an issue with one chipset. Needs to be reprogramming. I replaced that board from my SY77 just for check and synth worked fine so if someone have good DM1 or some skills to repair the board will be fully working again :)” Click here to search for synths on eBay