Optimus CONCERTMATE 970

Questions and Answers

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Kelly MooreJul 30, 2025
What to do if my Optimus CONCERTMATE 970 Electronic Keyboard has no sound?
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  April GrimesJul 31, 2025
  If your Optimus Electronic Keyboard produces no sound even when you press the keys, there might be several reasons. First, ensure the keyboard hasn't turned off automatically by setting the POWER/MODE switch to OFF and then back to ON. Check that the volume isn't turned down; if it is, turn it up. Also, disconnect any headphones that may be connected. Verify the power supply: make sure the battery symbols (+/–) are correctly aligned, the batteries are fresh, and the AC or DC adapter is properly connected. Lastly, if the POWER/MODE is set to FINGERED, try setting it to NORMAL or CONCERT CHORD, or press 3 or 4 keys to form a chord.
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Vanessa MorganAug 6, 2025
Why is there no sound from my Optimus CONCERTMATE 970 Electronic Keyboard when connected to an external amplifier?
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  Jason JonesAug 6, 2025
  If you're not getting any sound from your Optimus Electronic Keyboard when it's connected to an external amplifier, the first thing to check is the volume; make sure it isn't turned down, and turn it up if necessary. If the volume is okay, the problem may be a defective connection cord. Try replacing the connection cord.
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Shane ThompsonAug 21, 2025
How to fix no sound on Optimus Electronic Keyboard?
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  Michael LyonsAug 21, 2025
  If your Optimus Electronic Keyboard has no sound, consider these possible solutions: * If the keyboard has turned off automatically, set POWER/MODE to OFF then ON again. * If the volume is turned down, increase it. * If headphones are connected, disconnect them. * If there's a power supply problem, check the power supply by ensuring battery symbols (+/–) are facing correctly, using fresh batteries, and properly connecting the AC or DC adapter. * If you are pressing too few accompaniment keys while POWER/MODE is set to FINGERED, set POWER/MODE to NORMAL or CONCERT CHORD. Alternatively, press 3 or 4 keys to form a chord while POWER/MODE is set to FINGERED.
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Tracey RichNov 13, 2025
Why does my Optimus CONCERTMATE 970 Electronic Keyboard have no sound even when I press the keys?
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  Michael HallNov 13, 2025
  There are several potential reasons why your Optimus Electronic Keyboard might not be producing sound when you press the keys: * The keyboard might have automatically turned off. You can resolve this by switching the POWER/MODE to OFF and then back to ON. * The volume could be set too low. Try turning up the volume. * Headphones might be plugged in. Unplug them to see if the sound returns. * There could be a problem with the power supply. Verify that the battery symbols (+/–) are correctly aligned, the batteries are fresh, and the AC or DC adapter is properly connected. * If the POWER/MODE is set to FINGERED, you may not be pressing enough accompaniment keys. Try setting it to NORMAL or CONCERT CHORD. Alternatively, press 3 or 4 keys simultaneously to create a chord while in FIN...