I’m completely new to this so please be a little patient, I’m a mechanic/guitarist that’s always fine my own work and repairs, a friend gave me an early drm16 to check out for him, a bit of background, I believe it’s a 240v version for out here in Australia, reason I believe this is he purchased 3 units memory man, 4 channel mixer and this from the same person. Anyways switches seem to function, there’s voltage through transformer and then seems to be consistent across the circuit board, I’ve removed the chips and checked the pins, re flowed any solder that looks iffy, I’ve had the volume and tempo pots apart, it won’t fire up for some reason, hoping someone has some ideas for me to chase down, thanks in advance