Roland Clan Forums

This sounds like the usual Roland front panel button failure. I've lost count of how many I've replaced on all of the early models, ( D50, W30, etc). The buttons are 5mm Tact switches, you need to know how to solder to replace them but its not a difficult job. You can buy them on E-bay

Paul

Put the D50 into test mode: Hold "0" (Ten-keypad) and DECREMENT then turn the power on. The display will show Test Mode menu. (If it shows either "Reverb Error" or "Chorus Error" , then you have to press EXIT to go to the relevant menu. ( This would happen only if you h...

Hi, if you haven't sorted this yet, according to the circuit diagram there are 4 "taps" on the mains transformer. you need to take the live lead off the one its on and move it to end one, probably marked 240. the taps are for 100v, 117v, 220v and 240v.

paul

Definitely check for dry solder joints on the Power Supply Board. Looks like the 5volt rail is low.

Paul