Ensoniq SQR
This time I got an Ensoniq SQR module. The repairs included replacing a few control panel microswitches, the 2×16 character alphanumeric LCD (with a standard Hitachi driver — it was upgraded to a high-quality OLED with proper mechanical mounting), and the RAM backup battery (the owner requested a dedicated socket). Overall, the repair was quite simple but definitely improved this interesting instrument.
