Question about Denon AVR-485 Receiver

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ON/Standby Led Light flashing

Venalition is not block and it's not hot. I've checked the speaker connections and think they're o.k.

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Consider re-initializing the machine. Follow the instructions in Pg. 55 of the manual. Note: This will "erase" all your presets, so you'll need to go through the setup again.

-Eddie V

Posted on Jan 03, 2009


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Posted on Jan 02, 2017


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Standby indicator flashes

When the "Protection" indicator comes up the display panel of my receiver or the On/Standby LED is flashing, does that mean my receiver needs to be repaired?
The "Protection" light comes on when the receiver's current sensing and thermal monitors detect some unusual operating condition that, if left unchecked, might damage the amplifier. This can happen if there's a dead short in a speaker wire or if you're using very low impedance loudspeakers at high volume for an extended length of time. On older model AVRs you may see the word "Protect" on the receiver's display. More current models will indicate a flashing red light on the Standby LED when a Protection circuit trips
n thermal cases, the circuitry will automatically reset after a few minutes of cool down and the Protection indicator will go out and normal operation will resume. If the protection light came on due to a speaker wire short, low impedance condition or a bad speaker, the receiver's power will need to be turned off to reset it. Before turning the power back on, all speaker wire connections should be checked for their integrity at the receiver side and at the speaker side. If the protection light goes on immediately after you turn on the receiver, disconnect the speaker wires at the receiver side and retest. If the receiver's protection light goes off, then there would still seem to be a problem with one channel's speaker wires or speakers. Connecting them one by one and retesting should allow you to find the problem speaker or connection.
If after checking all your connections, the Protection indicator stays lit, you may need to "initialize the microprocessor (see the FAQ on that topic) or take your receiver to an authorized repair center for a diagnostic. The "Initialization of the Microprocessor" or "reset" procedure can be found in your owner's manual on current model AVR product. Please note, this will erase all setup configurations in the system and require the system to be setup again. You may want to mark down the settings before resetting your receiver to aid in the setup process. If you had an installer setup your system, you can contact them for assistance and any associated costs that may apply to setup the receiver again would be the responsibility of the owner.

Jul 17, 2016 | Sony DAV-FR1 System

3 Answers

I have a Denon AVR1603, recently I plugged computer in AUX connections at rear (not loud) and it kept tripping out. Eventually it tripped and now the the on/standby light fashes but nothing else happens....

The LED flash indicates that unit goes into protection. Check the power transistors, the 0.22 ohm or 0.47 resistors in the output of the transistors.


Sep 29, 2008 | Denon Audio Players & Recorders

1 Answer

Wont Come off Standby

IIC Bus line is busy. Should be a main Digital board problem. Check and replace it.

Oct 11, 2012 | Beko 324250WN 28" TV

1 Answer

Dolce Gusto KP2100 - Fault

as per your report we understand that there must be something wrong with boiler/hear or with the heating sensor. So that when you try for hot water because of safety reason it gets automatically switched off. Please rush near to your service center as we do not advise you to fix this issue.

Mar 19, 2017 | Coffee Makers & Espresso Machines

1 Answer

Sont CMT-NEZ5 won't stay on, standby light blinks

I haven't the schematic diagram to your set at present. If you send the schematic you have with me now, I'll refer it and will give you further assistance. OK.

Nov 10, 2011 | Sony CMT-NE5 CD Shelf System

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SONY VPL FX-40 projector. After plug in-ON/Standby LED is red for few seconds and starts flashes in red(repetition rate of 12 flashes). After pressing I/O key-ON/Standby LED flashes in green(few...

A Flashing Red ON/STANDBY LED means one of the following
2 Flashes - The internal temprature is high. Check the air holes are unobstructed.
4 Flashes - The fan is broken
6 Flashes - The internal electrical system has failed.
There is no entry in the manual for 12 red flashes.

Feb 19, 2011 | Sony VPL-FX40 Projector

1 Answer

Standby Output LED is flashing fast

This is the "protect" mode -- the unit has detected a short circuit in the speaker output and has shut down to keep from burning out the amp.

Remove the speaker wires, then reconnect one at a time. If the LED starts flashing again before you've connected any wires, then the problem is within the receiver.
If it starts flashing again when you connect a particular speaker, then the problem is in the wiring to that speaker or the speaker itself.

Sep 05, 2010 | Audio Players & Recorders

1 Answer

PFM-42b1e LEd flashing 6 times... 1 sec. picture with green stripes... and then it turned to standby

I have a sony tv PFM-42B1 when I turn it on it go to standby an a red light flash I count count 14 time but I heard that it only support to flash 1 to 6 time how do count the flash

May 06, 2008 | Sony PFM-42B1 42 in. HD-Ready Plasma...

1 Answer

Message Light flashing continously

Resetting the New Message LED
If the LED remains on after you’ve retrieved your messages, you may need to reset
the indicators. With the phone is in standby mode, press and hold find handset on
the base until the paging sound stops (about 5 seconds).

Dec 12, 2006 | Uniden TRU8865-2 Expandable System...

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