Sounds like a power cord connection problem--not software. I'll bring my test equipment with me next week and check it out for you. Unfortunately, power connections, especially those that use low-voltage power packs, use light wires and junk connectors. They wear quickly and frequently have to be replaced.
Good Luck,
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)