Question about Denon AVR-4800 Receiver

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I inherrited a Denon avr 4800 reciever that when powered up immediately shuts off and the red power led flashes rapidly, any ideas? Richard

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Determine how many times the led flashes, See if there is a way to reset the device.

Posted on Sep 16, 2010

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I have a old denon avr-1804. try to switch on power but can not. just appear a main power red light flashed rapidlly. please tell me why?


Greetings
the red flashing LED is that the Device is in protection mode.
the internal power supply . +15 volts and -15 volts are defected you need to be replace it ... Regulators 7915 and 7815 .... these you should change , might also need to check capacitors .
these are common defects for Denon . AVR units.
Good Luck
Hope this helps

May 26, 2016 | Denon Audio Players & Recorders

1 Answer

I have an avr 4800, and eveytime I raise the volume to -21 or higher it goes into protection mode. can you help? my zipcode is 60184


http://www.retrevo.com/support/Denon-AVR-4800-Receivers-manual/id/363ag816/t/2/

I'd treat this symptom as "DISPLAY not lit and power indicator is flashing rapidly." under Troubleshooting on Page 60.


and I'd evaluate the speaker load you're presenting to make sure it's effectively higher than 6-0hms per speaker channel.

Jan 11, 2011 | Denon AVR-4800 Receiver

1 Answer

AVR-1802 5.1 Channels Receiver: My Denon AVR-1802 LED is flashing rapidly. I have...


replace all the electrolytic capacitors in the power supply. i had the exact same problem with mine and once i replaced the capacitors it powered up and stayed on and worked perfect.
these capacitors tend to fail as they're of poor quality.
this fault is very common on denon receivers, especially the later models.

hope this helps?

May 16, 2010 | Denon AVR-1802 Receiver

1 Answer

AVR 684 was working normally then shut off with rapidly flashing red led. Have allowed to cool overnight, tried different power sources, disconnected speakers etc, etc. Any ideas?


The unit more than likely has a fault in the power supply or the output stage. Common switching power supply problems are the FETs used for switching fail or the PWM generator fails. Output circuits can be configured many different ways. The trend these days is to use integrated high power amplifiers for each channel instead of discrete push pull amplifier stages.

Feb 06, 2010 | Denon AVR-684 6.1 Channels Receiver

2 Answers

Avr 688 shuts down immediately after powering on


Internal problem with power supply or one of the channels. Bring it to a repair facility.

Aug 09, 2009 | Denon AVR-685 6.1 Channels Receiver

1 Answer

Shuts off then red light indicator flashes, disconnected all speakers but still wont work


Hi, this is a power board issue. remove the cover and make sure that this unit doesn't have blow fuse. if the fuse is fine, you will then need to replace the integrated power/ main board.

May 21, 2009 | Denon AVR-1803 Receiver

1 Answer

Have a denon avr 588 surround reciever that does not stay on the on/stand by button has a red light that is flashing it powers on for about 3 seconds then shuts off and then the red light starts flahing


this could be two wires touching on the back connections. one wire touching another ...just one will do this! look close and causing a short (its shutting off is a safety feature so the unit does not overheat)

Dec 08, 2008 | Televison & Video

1 Answer

Denon AVR-487 power issue


hello my friend denon receivers are famous for the power problem, check all the connections first and if there is not solution your power supply has a problem

good luck


caypianan@yahoo.com

Oct 28, 2008 | Denon AVR-4800 Receiver

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