Try this...it solved a similar problem for me w/ a Denon universal.
A short run of solid copper wire (bell wire - Home Depot) from the center screw of the electrical wall plate to a CHASSIS screw on the Pioneer should solve your problem.
Good luck.
A short run of solid copper wire (bell wire - Home Depot) from the center screw of the electrical wall plate to a CHASSIS screw on the Pioneer should solve your problem.
Good luck.