Recently I acquired a Roland ra-50 at a good price it was sold as is but it obviously isn't working so I need some advice on repairs!
When you power up the unit the screen would barely light up flickering. I had plugged it into my sound system and it immediately starts outputting scrambled up tones.
I opened up the unit to look for blown components. One 4700 uf capacitor in the power section appeared to either be leaking or glued to be safe I replaced it with a Panasonic capacitor. I also scrubbed the gunk away with isopropanol thinking it was shorting the close components. And replaced the battery.
After putting it back together the screen is brighter but still flickering and it still outputs the scrambled up tones.
What would the next step be?