Question about Yamaha RX-V490 Receiver

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Yamaha RX V490 Turning itself Off

Hi i just bought a yamaha rx v490 amp and it keeps turning off after around 5 seconds even with no speakers or inputs plugged in. Can someone pls help as im pretty ********** about my new purchase. The guy who i bought it from tells me it worked fine before shipment to me. Thanks to anyone who helps me out.

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The amp is in protect mode which means that the output section has a problem. With nothing connected, there are defective parts inside the unit. This type of problem is not likely to have been caused by any shipping damage. I would guess that the output transistors are shorted.

Dan

Posted on Jul 22, 2008

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Yamaha receiver keeps turning itself off


Have you tried the unit without speakers connected , just left on it's own for a while?

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http://www.retrevo.com/support/Yamaha-RX-V490-Receivers-manual/id/319ci975/t/2/

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Can you run 200watt 6ohm speakers on the RX-V490


Hi I have just read the specs on about your Yamaha system and you cant run 6 ohm speakers to your amp. You have to impedance match the speakers and the amp otherwise the speakers will "blow". So you need some 8 ohm speakers, the wattage of the speakers doesn't particularly matter as long as they are not too weak or too powerful becasue the amp will drive the speakers no matter what but if the speakers are of a low wattage then the amp could blow the speakers if it is turned up too loud. The specs of your amp are given in the link below.

Yamaha

Regards
Rob

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Yamaha RX-V490 comes on, goes off


More than likely its going into protect mode to keep from blowing your speakers. That pop noise is DC getting to your speakers before it shuts off i would recommend checking for DC voltage at the outputs first. If your not electronically inclined take it to a shop. Let us know :-)

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1 Answer

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I have the schematics in PDF file, but how can I send it to you?

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