<http://schema.org/articleBody>
"  Q: I recently had a party, and one of my friends turned up the volume of my AV receiver really loud. Suddenly, it shut down. Is it destroyed?  A: It&amp;#039;s possible that your receiver is toast, but don&amp;#039;t give up hope yet. There are two things to check.  Many modern receivers have &amp;quot;protection circuits,&amp;quot; bits of specialized hardware that recognize dangerous levels of volume and shut your hardware down, like a digital fuse. Some receivers communicate this on the display. Yamahas, for instance, show the word &amp;quot;Protection&amp;quot; on the LCD panel. Others might display an error code you have to look up in the manual. As long as no hardware was actually damaged when your buddy pumped up the jams, resetting the protection trip should put your receiver back in working order. The procedure varies from manufacturer to manufacturer, but most protection circuits can be reset by unplugging the receiver, waiting 30 seconds or so for the capacitors to discharge and plugging it back in. (Make sure to turn the volume down!) As long as nothing is shorted out, your receiver should go back to normal. If your receiver is still on the fritz, you may have blown a real fuse. Some receivers have a screw-in fuse in the back of the unit that can be removed and inspected easily, while others may have one or more fuses inside the case--you may have to unplug the unit, remove the case and root around inside to see. (Normal caveats about possibly voiding your warranty apply, but if your receiver is more than a year old, then the warranty has probably expired anyway.) If you find a fuse that looks burned out, it probably is. Replace it with a new fuse of the same amperage and voltage (available from electronics parts stores such as RadioShack for about 50 cents a pop) and you should be back in business. If, after your fix, the receiver powers on, but then turns itself off after a few minutes, it&amp;#039;s possible something is physically damaged inside. At that point you&amp;#039;re looking at a professional repair, not a quick fix at home. Don&amp;#039;t use pliers to remove glass fuses--you&amp;#039;ll only end up shattering them. Instead, use a Popsicle stick for leverage. For hard-to-reach fuses, try threading string under the fuse, then pull on both ends of the string to pop it out. (Photograph by David Turner) "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/technology/audio/how-to/a2630/4251625/>