Question about Marantz SR-7400 Receiver

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My Marantx SR7400 receiver turns on then back off when I hit the power button. I see the 'standby' light lit. When I hit the power button, the 'standby' light goes off like it should, I hear a click like the unit is turning itself on but the LED display does not light and the unit turns itself back off in a matter of a second or two. Then the 'standby' light comes back on. It worked fine, but one day when I turned it on. this happened without notice.

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  • Marantz Master
  • 35,672 Answers

The power supply may have failed without any symptoms.

Posted on Jun 19, 2017

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6ya6ya
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Posted on Jan 02, 2017

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TOLhamRadio
  • 509 Answers

SOURCE: the receiver is turning itself off - i.e back to standby.

If you don't use the remote control is it okay? If so, tear apart your remote control, use a Q-tip to clean all the lines in the circuit board where the rubber contacts touch. Then make sure that the rubber buttons don't have any 'gunk' on them that are making them stick. Clean the rubber pad with a qtip with dishsoap. Dry well, put back together and see if she works. Report back on your success. Good luck.

Posted on Dec 29, 2009

  • 417 Answers

SOURCE: hello i have a marantz receiver sr7400 fuse

Unplug the unit. Carefully unscrew the screws for the case. Probably 4 screws, 2 on each side of the unit. Remove the cover. Look for the fuses, and replace with exact same type/specs of the faulty fuse. If the fuse, is on a printed circuit board, be careful dislodging the fuse. Hope this helps.

Posted on Apr 07, 2010

sonicboomele
  • 1557 Answers

SOURCE: For no reason I know of, my Marantz SR8001 will

blinking power lights are a factory setting to inform the customer there is an internal electronic fault. and the unit needs to be repaired by a service pro in 99% of cases the owner can do nothing to fix it.

send it in

best luck

Posted on Oct 14, 2010

manu147
  • 1 Answer

SOURCE: marantz sr5600 reciever click and goes to blinking standby

I have the same problem. Earlier it got sorted out itself and now it has started coming up again.

Posted on Sep 01, 2012

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1 Answer

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you receiver is reporting that the impedance of the speakers is incorrect the manual says that it needs impedance of 6 to 16 ohms and when simultaneously using a and b it needs 12 to 16 ohms. but you receiver is also saying that the problem is with the av surround digital channel so the impedance of the speakers is either too low or too high check the impedance of the speakers and if they are correct try them on another circuit and see if the problem follows the speakers.
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You have two devices that won't power on. Doesn't that suggest a source power problem? Did they ever or never work where you are now or anywhere else? Or did you just come back from overseas and forget to set them up for U.S. power?

And you're not daisy-chaining the two units together, are you? That's a no-no. There's a wattage limit to what can be connected to the convenience outlets. Power amps are not usually supported.

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Marantz SR7400 AV Surround Receiver


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