The Voice Harmony button on my Pa800 does not always work. I use a multiple pedal and that works well.

My Question:
What can I do to restore the Harmony button?
Is there a spry that can be used?

Thank you, John C.

John,

Try spraying beneath the button with canned air. More often than not, those intermittent buttons are the result of just a tiny grit of debris that worked its way under the contacts. If that does not work, the button will likely have to be replaced.

Good Luck,

Gary