Question about Denon AVR-1200 Receiver

2 Answers

Receiver in Protection Mode

My AVR 1200 went into Protection mode after being hit by a 440 V surge. I have been told that all ICs in the Power circuit have been blown off and resistance values have increased. I have seen that several capacitors have been blown off. It's possible that other sections have been damaged too. But I was told that can only be ascertained after setting the power section right. My mechanic's opinion was that even if things are set right the perfomance can't be guaranteed.

What would be the experts' take on this - would it make sense attempt repairing the set.

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  • orderr1 Feb 20, 2008

    Same thing happened to me. The 1st time that I tried to start my Denon AVR-1200 receiver after a large storm, the power went on for about 5 secs before the power went dead and I could smell a slight burnt odor. I'm assuming that it went into Protection mode. Any ideas on fixing it without spending a lot of money?

  • Anonymous Dec 26, 2008

    I lhave the same problem protection mode cannot be cleared and the unit is locked up

    Tried initializing the microprocessor with no results

    Unit was connected to a tape deck that overheated burt smell detected but from tape deck....it was hot to touch but the Denon was warm only

    Ques is how do I clear the error msg and unlock the unit??

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  • Denon Master
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Something in the circuits got fried, most likely it blew out the entire board. ALL OF IT.

Posted on Apr 24, 2017

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  • Contributor
  • 17 Answers

Electronics like a receiver are so sensitive to power surges. I'm sorry to say that it's most likely unrecoverable, especially if it wasn't plugged in to a surge protector. Even if it was, they don't all protect 100% from surges. :-/

Posted on Apr 24, 2017

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Posted on Jan 02, 2017

techman
  • 3130 Answers

SOURCE: Denon AVR-810 going into PROTECTION mode

It sounds like there is a problem with the differential circuit. The bias I am not sure about, as every unit is different. You should get the service manual to be sure or call Denon and see if they can give you an idea. Good Luck

Posted on Jun 05, 2007

  • 3 Answers

SOURCE: amp comes on and goes

Do you still have the AVR1500? I have one with a bad tuner--and would be interested in purchasing your for parts. Let me know if you still have it and if you'd be willing to sell it.

Posted on Apr 29, 2009

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How can I get Dynex TV out of "protection mode"?


the protected mode kicks in when there is a safety issue with the receiver. This usually comes from an overload to the system via a short in the system or perhaps a surge in power. Your receiver shuts down, and you'll need to shut the entire system down to fix it.
In some older homes, some of the wiring doesn't deliver the "cleanest" power, delivering minor power surges to the items you plug directly into the wall. If your receiver is plugged directly into the wall, purchase a surge protector to stop this
Read more: http://www.ehow.com/about_5516888_problem-sony-receiver-protected-mode.html#ixzz2ZYa9W0Mi
God bless you

Read more: http://www.ehow.com/about_5516888_problem-sony-receiver-protected-mode.html#ixzz2ZYZm8THG

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Protection mode


Try tapping it on the top or sides with your hand or fist, I was told this buy a body of mine, That has been a (Electronic) Tech for over 20 years now, Tap it fairly hard,It has work for me with recievers And amps to get them out of the (Protection mode.What causes them to go into (Protect) Is a short in a speaker lead or the speaker wire come disconected some how,Or there could of been a power surge.

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Not familiar with this model but seems like the protection circuit is kicking in, this could be caused by an imbalance of Ohms between channels or a short. remove & check all speakers and cables for continuity or shorts, does the unit power on without speakers or in a different mode (surround off).
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Power went off and then tv will not start. It is fitted with a surge protector


The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

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Unit keeps going into protection as soon as its powered up.


Replace the audio amplifiers ICs they are damaged thats why the amplifier protect himself of a greater damage.

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Sony wega 60 in turns on and off by its self


Same problem here also and its getting worst each day.

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Protector flashing


Protet mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.

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It sounds like there is a problem with the differential circuit. The bias I am not sure about, as every unit is different. You should get the service manual to be sure or call Denon and see if they can give you an idea. Good Luck

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