The TD-50 contains an Auto Off feature which shuts off the TD-50's power automatically when it has not been used after 4 hours. From the factory (default), the time is set to 4 hours. This setting can be disabled if desired. Here's how:
1. Press the SETUP button.
2. Press the UP or DOWN PAGE buttons to select "SETUP MENU 2." (MIDI, AUTO OFF, INFO appear).
3. Press F2 (AUTO OFF).
4. Turn the dial counterclockwise to choose "OFF."
5. Press EXIT twice to return to the main menu. The new setting is saved automatically.