This summer, while hosting a cook-out, my receiver quit working half way through the evening. The volume was up, but not excessive (little more than half way). As of now, I can still "turn the unit on and off" and see the red/green light behind the power button...as well as the option buttons on the lower panel, but the LED readout has quit working, thus rendering the unit dead. I pulled the cover and checked the fuses, but they seem to be fine. Is there something else I can check, or is the unit actually dead?
I just bought this machine...and had earlier seen your post. I was looking at the "microprocessor re-initialization" part and thought, hey, it may be worth a try for you.
So, consider re-initializing (resetting) the machine. This can be done by:
1) Turn off the unit using the *main* power switch 2) While holding both Speaker A and B button, turn on the machine using the *main* power switch 3) You should see the main display flash at 1 sec intervals. Let go of the speaker buttons to finish.
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Your speakers may say 350 watts but that is the peak wattage at which they blow up and not a wattage they can sound distortion free at. Look for the RMS wattage which is probably around 40 watts. If you look at the specs on your receiver you will see it will put out a maximum of about 50 watts but the distortion on the receiver is above 1 percent at anything over 22 watts. That means they are going to start distorting at around half volume. The other thing you might check for is a impedance mismatch between the speakers and the receiver. Is the receiver set up for an impedence output of 8 ohms but your speakers are 4 ohms impedance.
firstly, don't be so certain that doubling your pumping capacity isn't damaging other parts of your pool system. Excessive flow reduces filter efficiency, can cause hyper chlorination, and cause faster degradation of the plumbing and pool surfaces.
a noisy pump typically indicates poor lubrication on bearings and bushings in the pump assembly, or misalignment of those parts. Things like this happen.
Either replace the pump (and i recommend going back to the original design specs) or rebuild it, using new bushings / bearings, high quality lubrication, and be certain that the drive shaft is perfectly straight, and that the bushings allow it to spin freely.
The amp is probably in protection mode due to excess heat, a short circuit out at the speakers or an internal problem. My guess is it's heat from being driven hard. Make sure the unit has sufficient ventilation or try turning the volume down a bit.
First, NEVER turn the volume all the way up to see what's wrong. If HALF volume doesn't work you're only risking a catastrophic speaker blowout if you should suddenly flick the switch that's causing the problem with FULL volume on.
Look for the MUTE or Volume +/- controls on the remote and indicators.
The best way to do this (if you haven't done this already) is to enable the Dynamic Range Control. This neat little setting makes the difference between loud and soft to be not so much, making soft sounds (like talking in your case) louder and something like explosions not so loud. This is also called Midnight Mode on some receivers. To enable this setting, grab your remote and turn the receiver on. Press the "Receiver" button, then hit the left arrow on the remote until you see something along the lines of "Dynamic range control" pop up on the LCD (should be the 8th setting). You probably want to set this to "Max", but you can also select "Mid" if you find that Max does too much.
If this still does not work, you can bump up the relative volume of the center channel a bit (or a lot of bit). Hit the "Standard" button on your remote, then "Test Tone" until "C" or "Center" comes up on the LCD. Then hit the "Level +" button a few times, making the center channel a little louder. Listen to it a while and adjust it to your liking.
The combination of these two settings should get you where you want to be. By the way, do a search on your favorite search engine for something like "manual Pioneer VSX-D512" and you should be able to download a manual from somewhere (it looks like Pioneer no longer hosts the manual on their site). Hope this helps!