No Sound from Subwoofer ONKYO TX-SR876! Help Please!

Hopefully these aren't stupid questions, but;

1) did you make sure that your sub is plugged in, and using a working outlet?

2) did you make sure your sub's gain is turned about 1/2 way up?

3) did you double check to make sure that the subwoofer cable is plugged into the sub OUT, and not the subwoofer IN, or someplace else, on the receiver?

Definitely not stupid questions. I consider myself pretty adequate at installing and wiring AV equipment and awhile back i had switched out cables for my sub to exchange with my son. When I turned my system back on I had no sub sound and couldn't figure it out and thought maybe my subs amp had blown for some reason. I even replaced the cable. After figuring it had to be the sub I did one last check behind the receiver and lo and behold, I had plugged the cable into the output one slot over from the sub output. When I swapped the cables I just looked where it was plugged in and put it in the same spot. Changed it to the right output and boom, the sub is back in action. Felt pretty stupid but relieved that's all it was.

I wanted to make sure that you didn't think I was belittling you with those questions, in case you'd already done that troubleshooting. I used the label "stupid questions" because we've all made those "stupid" mistakes at some point. Glad you figured out the problem and didn't go sending the unit back!

lol, as you can see from my other post you're not alone. Frustrated me for awhile until I realized my mistake. Glad it was an easy fix for you also.

I recently purchased an Onkyo TX-SR876, and a Panasonic TC-P65V10 tv. Just got the tv setup yesterday (temp till I get it wall mounted) and thought I'd get everything tweaked up tonight and watch a blu-ray movie. I put in Quantum of Solace...WOW did the picture look AMAZING! But I noticed a lack up umpf from the sub. I walked over to the sub to check and low & behold it wasn't a lack of umpf, it was not doing anything at all!

I'd run through all the channel leveling, etc, but nothing. ??? I tried stereo music, again no sound from the sub. The only time I seem to get any signal to the sub is when I check the levels with pink noise. If I'm playing anything back I get nothing.

I've turned on/off the Audessey EQ feature, I've turned on/off THX settings, everything I can think of.

Any ideas?

oh...it's an Axiom EP500 sub (though I don't think it's the sub that's the issue)

Thanks!

-Craig

never mind...figured it out finally. PS3 HDMI output settings were wrong.

It's always something...