Thanks for the reply PENG,
I made sure the connections were good, even switch the speaker wire and the opposite speaker statted working but not the other. Also did a reset, still only 1 speaker getting full audio
If you have already done the basic troubleshooting steps as described and reset it to factory default as below,
"Resetting the main unit
Use this procedure to reset all the receiver’s
settings to the factory default. Use the front
panel controls to do this.
1 Switch the receiver into standby.
2 While holding down the BAND button,
press and hold the STANDBY/ON button
for about two seconds.
3 When you see RESET? appear in the
display, press AUTO SURROUND/STREAM
DIRECT.
OK? shows in the display.
4 Press STEREO/ALC to confirm.
OK appears in the display to indicate that the
receiver has been reset to the factory default
settings."
then the unit is defective. As TLS said for the price for a new one (under $200) it is not worth sending back for repair unless it is still under warranty. Being a 2010/2011 any warranty would likely have expired. Keep in mind the entry level Pioneer receivers don't have much output so be careful not to push them beyond their limits if you want the next unit to last long.