Question about Denon AVR-4800 Receiver

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Denon AVR-4800 5.1Channel Standby light blinking

Went to add another speaker to receiver and it sparked and now standby light is blinking and I cannot get system to turn on.  It turns on for 5 seconds and shuts off.

Posted by sgoodm on

  • donovan5 Dec 25, 2007

    When I turn on the unit, it come on for about 3 sec. and just shuts down with the standby light blinking.

  • Anonymous Sep 09, 2008

    Denon AVR-4800 5.1Channel Standby light blink iing problem, and turn off in 6 sec



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Mitch

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It's going into protect. Unhook ALL the speakers and see if it still shuts itself off. If so, then it will have to be taken in for service.

Posted on Oct 27, 2007

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Dave Smith

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R141-R142, R148-R149
Replace with 2.2 Ohm 1 watt Flameproof resistors. (4 Places)

Posted on Dec 01, 2013

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2 Answers

All of a sudden stopped working and won't turn back on. been 12hrs. when power is pressed, it turns on for 2 seconds and then standby lights blink again and it turns off


This could be caused by a direct short circuit on the speaker outputs. Try disconnecting all the speaker connections at the back of the receiver and then power back on. You can also try a factory reset by holding the surround mode + clear button for 3 seconds.

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Most likely, you have DC Offset(a bad amplifier). The unit is shutting down to protect your speaker system, as well as protect the unit from any further damage. If you require more assistance, or would like to inquire about repairing your Onkyo, please visit my website at audioserviceclinic.com. You may contact me there. Thank you.

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I have sony Bravia KLV -32V300A suddenly shut-off while I am watching power indicator went off and standby red light blinking 5 times then after 2 seconds off then red light blinks again 5 times and so...


AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

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Trips and switches off


Hello Fixya customer,

Thank you for your question.

The best way to fully isolate the fault is to disconnect all the speaker wires, and verify that there are no strands of wire shorting between the speaker terminals on the rear of the unit.

Turn the volume all the way down, full CCW, and if it goes into shut down with the STBY light blinking then there is a fault in one of the amplifier's.

Thank you for using Fixya, and if I can be of further assistance please ask.

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After turning ON the power/standby switch, the unit(receiver) display comes ON (green light) then after approx.4-5 seconds the display goes OFF and the unit defaults back to the standby mode (red light). I...


Is the red light flashing at first?
The unit may be going into protect mode. Lets hope it has done the job and the receiver has protected itself from failure.
Protect mode can result from speaker wires touching each other or the Amps2_bing.gif metal case. Check that first.
It can also be caused by unstable ohm loads if too many speakers2_bing.gif are connected to any of the outputs especially zone 2.
If you can remove all speaker wires and turn the unit back on. If it stays on, turn the volume down on the main zone and zone 2 if connected. Then reconnect speaker wires.

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1 Answer

When i power on the device, it comes on but goes off about 5 seconds later.


Hi...

1st thing to check is for GOOD speaker connections at both ends
and not mixing A and B speaker wiring.

A Denon is usually a good brand. Might be worth servicing if need be.

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With the main unit turned off, press and hold [REMAIN] on the home theater's remote for 4 seconds. (The REMAIN button is directly under the 7 button). Once held down for 4 seconds, the Volume Indicator on the main unit will turn on for 1 second. Release the [REMAIN]. 

Press the [RESET] on the back of the Wireless Receiver 2-3 times. The Standby/On LED on the front of the Wireless Receiver will blink 3 times
 
Turn on the main unit. The Link LED on the wireless receiver will light up if process is done correctly. The front of the main unit will no longer say REAR CHK and the rear speakers should now function correctly. 

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It works sometimes, mostly the volume bottem

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1 Answer

Standby light blinking -unit won't stay on


When it is on, does any audio come out of the speakers? If so, you may have a problem in the protection circuits. If no audio is heard, I would first check the speaker wires to make sure there are no strands shorting across the terminals, and that you have the it selected to output audio to the speakers -- Now also be sure to check the various inputs, for instance if it has a FM receiver, select that and see if any audio comes out then as well. I don't know what the cable guy could do other than knock loose a wire or change connections on you.

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