Question about Marantz SR-4300 Receiver

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Standby issue - overheating?

I have a Marantz sr4300 receiver which works perfectly but after about an hour it goes onto standby and you have to power on and off to fix - it then works perfectly again. Any idea how to fix this?

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  • Scott Frye
    Scott Frye May 11, 2010

    Hi...

    Are the speakers the right ohms? ( impedance) and are they all really connected at both end?
    Is there good airflow all around the case?

    Thanks


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4 Suggested Answers

cyrylthewolf
  • 143 Answers

SOURCE: Problem with Marantz SR5500 Receiver

Sounds like you have an issue with your electrical circuit. Your receiver could be receiving spikes of current from the electrical wiring in your house.

Review your current electrical situation. Keep in mind that certain outlets are on the same circuit and that running multiple, high-wattage devices on the same circuit can cause issues with some of those devices. Especially when it comes to turning devices on and off.

Many devices take a sudden, rapid charge to power their circuitry the moment you turn the device on. Home audio and HVAC systems are particularly notorious for doing this. Other devices on the same circuit can sometimes suffer influxes of power flow and may either turn off or go into standby mode to protect themselves from the resulting surges.

I've lost audio systems that way... I lived in an apartment building that has wiring most likely dating back into the 40's. I once turned on a space heater on it's max 1500 watt setting and blew my Logitech Z-680 speakers. (The "BOOM" sound that emitted from my subwoofer was AMAZING. I had just blown an amp circuit. It literally exploded inside of the subwoofer. Took pics and everything.)

If you have the means to do so... You might consider re-wiring your electrical circuit. Take into consideration where you're going to run certain devices and wire the system accordingly.

In the meantime, you would want to be sure to buy a HIGH-QUALITY surge protector for the audio system. Spend a few bucks and get a GOOD one with a good warranty on it. Don't use those cheapy ones that we only really use to split the outlet. NOTHING under 1,000 joules.

My receiver sometimes locks itself like that, though. If we have a power outage or the unit is unplugged suddenly, it will keep itself in standby mode until you unplug it, press the power button a few times to discharge any current left in the capacitors and plug it back in normally. Only then will it turn on again.

Let me know what you come up with.

Cyryl

Posted on Nov 03, 2007

smarthome2
  • 1114 Answers

SOURCE: marantz SR8001fail to standby mode, will not reset

Test all your speaker impedances and check for shorts on both wiring and speakers. Use a digital multimeter. If you still have an issue, disconnect all speakers and test receiver. If you still have a problem, post a comment and I can help some more.

Posted on Aug 09, 2009

SOURCE: Marantz sr8001: standby light blinks rapidly,

Hello there Ed.

For anyone that has ever had such an issue with a MARANTZ SR series (6001. 7001. 7002. 8001...etc...) issue a question and I do HAVE the answer.

I could be just anything, or just the low quality binding posts used by MARANTZ for that.

Please describe to me in details how you've connected your speaker wires at the back, and give me description when and how did this problem came up.

Kind regards
Evangelos

Posted on Nov 04, 2010

dunnbiker
  • 8546 Answers

SOURCE: I have a marantz sr5001

Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.


Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Posted on Mar 09, 2011

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Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.


Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

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Hello there Ed.

For anyone that has ever had such an issue with a MARANTZ SR series (6001. 7001. 7002. 8001...etc...) issue a question and I do HAVE the answer.

I could be just anything, or just the low quality binding posts used by MARANTZ for that.

Please describe to me in details how you've connected your speaker wires at the back, and give me description when and how did this problem came up.

Kind regards
Evangelos

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Test all your speaker impedances and check for shorts on both wiring and speakers. Use a digital multimeter. If you still have an issue, disconnect all speakers and test receiver. If you still have a problem, post a comment and I can help some more.

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