goodguy

SOLVED (After a battery change, had a non working display and lost all sound): FIX: Tested for +/- 12 v to display (white and black wire), discovered black display power wire (from power supply) was pinched under a screw...

I replaced the battery in my D50 and now screen is blank and no sound. Ugh.... Was working perfectly before battery swap..perhaps eprom is lost/degraded? Display is absolutely blank and no activity at all. Keyboard red l...

Thanks very much for the suggestions - will check them out. Problem is. the display is blank so will not show anything which makes it impossible to perform recovery functions. Pretty sure it is not a bad display. I have...

My Roland D50 was working fine (other than 3 inactive keys, solved by resoldering a trace that affected those keys). Before battery change, had all sounds and functionality. While I had the D50 open, decided to change th...

My Roland D50 was working fine (other than 3 inactive keys, solved by resoldering a trace that affected those keys). Before battery change, had all sounds and functionality. While I had the D50 open, decided to change th...