One of my sons wants to learn to play piano. It just so happens I own a Roland XP 50 keyboard that I kept in storage for a number of years. It didn’t work when we hooked it up, but we figured out how to fix a Roland XP 50 with no sound.
When we turned it on, the Roland XP-50’s screen flashed a message that said user memory damaged, the LCD screen was incredibly faint, and it wouldn’t make a sound.
Replacing the Roland XP-50 battery
Some people talk like replacing the battery in a Roland XP-50 is a big deal. It isn’t. If you have a power screwdriver, you can do it in two minutes. If you don’t have a power screwdriver, it might take 10. Trust me, you don’t have to be a technician to do it.
Lithium batteries are good for about five years and chances are this one was on year 20. Fortunately, the XP-50 uses a common type of battery: the CR2032 battery, the same as my car’s keyfob. We unplugged the keyboard, flipped it over, and removed about 20 screws. Then we removed the metal plate, and the battery was right there on the mainboard. Click a metal tab and the battery tilts out. We replaced it with a cheap CR2032 from Dollar Tree. Just push the new battery in, with the embossed side facing up. Don’t touch any of the electronic components while you’re in there. Accidental static discharge causes permanent damage to them. Be cautious but not paranoid–stay near the battery and you’ll be fine.
When we replaced the screws, plugged the power back in, and turned the keyboard on, it still didn’t work right. The screen was still faint and still had that mysterious user memory damaged message.
Reset the Roland XP-50 factory defaults
So I reloaded the factory defaults. It’s a five-step process.
1. Press the DISK/UTILITY button.
2. Press #4 on the 10-key pad to select SOUND.
3. Press #5 on the 10-key pad to select PRESET.
4. Press ENTER, then turn the value dial until the screen says Memory Protect OFF.
5. Press ENTER twice. The display will say COMPLETE.
At that point, the LCD screen shone at a normal, readable brightness, and it played through the headphone jack. Then I hooked it up to an amplifier, and it played fine through the amp as well. Most importantly, it kept working even after I turned it off and back on.