Question about Denon AVR-1400 Receiver

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Power don't turn on

There is a problem for this receiver. When I turn on the power switch on receiver, stanby lamp shortly blinks once, but receiver is still off. I searched forum site to fix this problem and common result was checking the protection circuit, mainly output transistor and the resistors, capacitors. When I opened the receiver, I couldn't discriminate the protection circuit. But I can discriminate the elements such as transistor (BJT/MOSFET), resistor, capacitor and so on. Which one is output transistor ? Could you let me know which part is protection part ? Then I can check whether the circuit is shorted or not by myself using multimeter. In addition, if any, could you give another cause for the problem ? Because the warranty is over, I have to fix it. I don't want to pass it away.

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Re: Power don't turn on

Look for a large aluminum heat sink with the output transistors bolted to it. You should see anywhere from 4 or more large transistors bolted to it. I doubt that the protection circuit is malfunctioning. I would bet that it is doing exaclty what it is supposed to do. If you do find some bad output transistors, be sure to check all the components that work in conjunction with those transistors. Good luck.

Posted on Apr 09, 2007

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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.

Feb 14, 2016 | Marantz SR7005 Receiver

2 Answers

My sr5004 marantz receiver has gone into standby with the indicator is blinking how do i get ride of it

If the red led is blinking fast (8x/second) the power supply is likely damaged and the unit will need to be serviced. If blinking slow, the most likely cause would be a shorted speaker connection. To help find the cause, unplug everything including the power and speakers. Connect only the power and try to turn the unit on. If the light doesn't blink, you know you have a shorted connection. Power off and connect the inputs and then power back on. If the light is not blinking, you know the problem is with an output connection. Just find the bad connection by process of elimination.


Sep 27, 2014 | Marantz SR5004

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What is the problem if the stanby indicator flashes red and doesnt fire up?

First disconnect all the speakers.

See if the unit will fire up after disconnecting it from the power for 1 hour or more. If it does you have a short in your speaker wiring.

Check your connections and reconnect if it fires up.

Now refer to page 129 of your manual.

If the unit does not fire up, press VCR/DVD, while keeping it depressed press the on button.

"Clear" should appear in the screen.

If clear does not appear or resetting to default does not allow the unit to fire up, then another Onkyblow has bitten the dust and is fried.

If it fires up after setting back to factory default, then you will have to redo your set up from scratch.

May 10, 2014 | Onkyo TX-SR608 Receiver

1 Answer

When i power up the reciever and watch tv the reciever turns off and the power button blinks red. I unpluged the reciever for 1 hour and put it back on. nothing changed. i even unpluged the speaker wires...

You have an internal short in your receiver could be power supply or most likely a output transister. There is a code to the blinking red light check your manual it may list the number of blinks with problem. However its not a simple fix. plus make sure HDMI cable is unplugged when reseting receiver if this cable has a short it may cause it to. Sorry to hear the bad news, nice receiver

May 24, 2010 | Denon AVR-1508 Receiver

1 Answer

JVC RX 709V Will not turn on stanby keeps flashing on and off.

There is most likely a fault in the power supply that is causing the amplifier to go into protection. This receiver more than likely has a switching power supply you can tell by the weight of the amp. Heavy = linear power supply and light = switching power supply. Common problems with switch mode power supplies are the FETs used for switching and the PWM (pulse width modulation generator) If you know someone into electronic repair it should be too difficult. The FETs won't be cheap. Though. All in all the unit should be no more than 100 dollars to repair between labor and parts.

Feb 08, 2010 | JVC Audio & Video Receivers

1 Answer

Power light blinking

Send it for repair. The receiver has a problem with power supply or a bad channel.

Oct 05, 2009 | Denon AVR588 Receiver

1 Answer

Power button (light) blinks

Check your speaker cables, make sure none have shorted out. if they have, then thats why the unit won't power up. The units protector circuit is being activated upon startup.

Dec 08, 2008 | Denon AVR-1706 Receiver

1 Answer

Denon AVR-1906 Reciever is not working. Was watching a movie and then it suddenly shut off. Now, the power light is blinking red. When I try to power it on again it starts to boot up but then turns off...

speaker terminal are short circuit,switch power off connect speaker properly then switch power back.
-the ventilation holes of the set are blocked-turn power off and make good ventilation around leave the set to cool and turn power back.
-the unit is operating at continuous high power turn it of and allow for cool down and switch it back.

Jun 01, 2008 | Denon Audio & Video Receivers

1 Answer

On and off switch

This is the thermal overload for the amplifier section. unplug unit and check all speaker connections for a crossed wire. After all connections are checked and are in good condition, plug the amp back in and power up. Note: the polarity of the speakers when the wires are plugged in. Use the painted line on the speaker wire as a guide for which one is positive(+) and negative (-). If an amplifier is operated out of phase for too long ( positive and negative reversed), you can damage the amp. A bad speaker coil can cause the overload as well. If it still does it, disconnect all speakers and power it up. If these remedies do not solve it, you amplifier IC is shorted and needs replaced.

Apr 10, 2007 | Kenwood AR-304

1 Answer

Wont come out of stanby mode ??

The trouble your describing tells me that theres a short in the output circuit of this unit. Unless you know how to troubleshoot solid state electronics, Please take to a pro to have it serviced , as there are no user serviceable parts inside this unit. Good Luck

Jul 24, 2006 | Panasonic SA-XR50S 6.1 Channels Receiver

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