I’ve had my Pioneer VSX-932 receiver for under a year. Recently, for some reason (maybe the kids press a button) I was getting a really bad echo in all audio sources through the receiver I tried different EQ settings, DTS, Dolby, etc. None of the changes seem to make a difference.
I found out how to reset the receiver from Pioneer’s support site. The directions are below. Thankfully this fixed the issue for me and I really enjoy this receiver .
Resetting the unit to the status at the time of shipment may solve the problem.If you reset the unit status, your preferences will be reset to the defaults. Note them down before performing the operation below.
How to reset the unit:
1. While holding down [AUTO/DIRECT] on the main unit, press [STANDBY/ON] on the main unit.
2. “Clear” appears on the display and the unit returns to standby. Do not unplug the power cord until “Clear” disappears from the display.
Source: How can I restart and reset my Pioneer AV Receiver? : Pioneer Audio-Visual Global Support