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Protect error on marantz sr4200

"protect" error on marantz sr4200 when i icrease the volume. It never used to be like that. I moved and set it up at my new place. I've i set it up wrong?

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Check all your speaker wires carefully. Chances are good that a braid has crossed from + to - and causes the unit to protect itself. This is a very common problem! everyone's done it at some point. Check connections at both the receiver side and the speaker side. If you still have a problem, post a comment and I can help you troubleshoot further. Hope this helps.

Posted on Sep 27, 2009


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Posted on Jan 02, 2017

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SOURCE: Hi, My Marantz SR4200

Or it could be you're overdriving it, hence the heat. Take a clue and turn it down. At 70 wpc played loudly it could be going into speaker- and self-damaging distortion.

Make sure it has a lot of ventilation.

Posted on Dec 23, 2010

Testimonial: "Thanks, fair point. Have provided good ventilation since so we will see. Also found a couple of loose speaker conecttions. Next party will tell!"

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My Marantz AV Surround Receiver SR4200 has an over zealous protect mechanism which turns off the receiver when it's clearly not necessary. Is there any way to adjust or turn off this mechanism?

There are 2 causes of the problem that you describe. One is the input signal is too high and is over driving the amp. The other is the output impedance is dropping due to short circuit etc. There is no adjustment on the protection circuit. It is possible that a weak sensor is present or a bad transistor etc, but you need special equipment to check that.

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Probably not. Marantz does not supply replacement boards, so you can't just put a new board into it to replace what was damaged.

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The OVERLOAD on my Marantz PM 44-SE is tripping out even at very low volume setting - using any of the inputs with either speakers connected or disconnected. I can even hear it tripping when no inputs or...

Overload is another form of protect mode. See the link below for an explanation of protect. Also, in your specific case, the problem is definately internal to the amp rather than an external cause. Expect a parts cost in the $40 range. Feel free to post additional questions.


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My Maratnz SR4200 is coming up with a protect sign on the digital display. I have tried cutting off the ends of the wire to ensure dust hasn't tripped it and also am sure the wire has been entered...

Unplug all of the speaker wires. Switch it on. If it still says "protect" then the problem is internal within the receiver. If it stops going into protect mode with speakers disconnected, then the problem is possibly blown (shorted) and or incorrect speakers causing it to trip.

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Hi, My Marantz SR4200 goes into protect mode about 45min after cranking the volume up to party mode, ie above '0'. It is getting worse slowly. Ok at lower volumes. Something seems to be overheating,...

Or it could be you're overdriving it, hence the heat. Take a clue and turn it down. At 70 wpc played loudly it could be going into speaker- and self-damaging distortion.

Make sure it has a lot of ventilation.

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1 Answer

Connecting apple tv to Marantz sr4200. The HDMI plays video, but no audio??? I connected an optical cable, but still no sound???

Check out the sound menu on the TV you might not have it switched to digital out, or have the wrong audio mode.

Jun 26, 2010 | Audio Players & Recorders

1 Answer

Have to turn way up in order to hear

Have you gone into the TV's menu to make sure that the audio outoput is not set to "variable"?

On my Sony I have the option to set the audio output as "fixed or "variable"

make sure its set to fixed

if that's not it try a different input on your receiver. you can use anything EXCEPT PHONO.

Lastly on my Denon receiver I have to specify how each input should get its signal if you are using an optical cable then you may have to go into the menu and tell it to look for a digital signal not an analog one.

Hope that helps

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