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Amplifier protection mode - Harmon Kardon Harman Kardon HK990 2x150 Watt 2.2-Channel Stereo Integrated Amplifier Black

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Use speakers withwith higher impedance, the sound is low but protected

Posted on Nov 03, 2012

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2 Answers

How do you reset nitro amp that is in protect mode?


If the amp is in protect mode, then there may be a speaker wire that is shorting out or you may have a bad speaker...you can test this by completely unhooking the speakers on the amplifier and then turning the amplifier on...if it comes out of protect mode then you will need to find out which speaker is bad...if the amplifier does not come out of protect mode when you turn it back on then there is a problem inside the amplifier and you will need to take it to a service shop for further diagnoses

May 15, 2011 | Nitro BMW-482 Car Audio Amplifier

1 Answer

Protect mode


Protection circuit.
Checek the wiring of the amp and speakers, don' forget to look for shorts at the speakers. Make sure no wires are touching each other

Apr 30, 2010 | Volfenhag 1600 WATT CHROME AMP AMPLIFIER 2...

1 Answer

PROTECTION LIGHT IS ON AND THERE IS NO POWER...WHATS GOING ON???


It when into protection mode either because something shorted, or it was over loaded, or over heated.

Disconnect the power for 5 minutes then hook it back up.

If after doing this it still remains in protected mode, there could be a more serious problem.

If it comes out of protection, and it goes back to protected mode a lot, then you have you ohm load wired too low. The amplifier cannot handle that low of an ohm load.

Re wire to a higher ohm.

Oct 17, 2009 | Kicker KX600.1 Car Audio Amplifier

1 Answer

Light


The red light indicates that your amplifier is in protect mode. Amps go into this mode if there is something wrong with the setup of the system to prevent fatal damage to the amplifier circuitry. This is bad thing since the amplifier will not function until the problem is solve and it can remove itself from protection mode.

Amplifiers can go into protect mode for many reasons but one of the most common is incorrect mounting. Is your amp sitting on the metal of your vehicle? Is it bolted down and screwed into the metal of the vehicle or your seat? The amp should never be touching any sort of metal. Only the ground should touching the metal of your vehicle.

Speaking of grounds, many people often neglect proper grounding which can cause an amp to go into protect mode. Do you have a solid ground? Is the wire less than 3 feet long and directly connected to a non-painted metal part of your vehicle? Is the ground wire the same gauge as your power wire?

These are just a few reasons why an amp can go into protect mode. You can find more information here. Or simply google for why your amp is in protect mode.

Aug 06, 2009 | MTX Thunder 81000D Car Audio Amplifier

2 Answers

My amp automatically goes into protect mode


There are 4 reasons an amplifier tries to protect itself.

Overheating - thermal shutdown.

Over Impedence - The subwoofers installed are not configured into a load the amplifier can handle.

Output is grounded - a positive wire strand may be touching the ground terminal - a wire may be shorted, or a speaker voicecoil is blown.

Intennal problem - Output on amplifier blown, or some other component has failed.

Check your wiring to the amplifier again - if all is good - disconnect the speakers and try to power on. If the amplifier turns on normally - test the speakers for blown coils.

If the amplifier still goes into protect mode - the problem is internal and needs professional repair.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

May 06, 2009 | AudioBahn A2301 2-Channel Class A/B Mosfet...

1 Answer

Protection mode


It's normal for some amps to go into protect for a few seconds when initially powered up. If it remains in protect mode, it may have shorted output transistors. To eliminate other possible causes, read through the following troubleshooting page:

Amp in Protect Mode - Troubleshooting

Let me know if you have any other questions.

Dec 11, 2008 | Phoenix Gold Titanium 800.1 Car Audio...

1 Answer

Sounstream tra 560.2 always in 'protect'


It probably has shorted output transistors. To eliminate other possible causes, read through the following page.

Amplifier in Protect Mode - Troubleshooting

Let me know if you have any other questions.

Nov 01, 2008 | Soundstream Tarantula Car Audio Amplifier

1 Answer

How to change the Red Protect light to Green Power.


If the amp goes into protect mode, it's likely due to shorted output transistors. To eliminate other possible problems, read through the following page:

Amp in Protect Mode - Troubleshooting

If the problems are not with the wiring, follow the link at the bottom of the page to the Amplifier Repair Primer page.

Let me know if you have any other questions.

Sep 21, 2008 | Audiofonics ADF-240 Car Audio Amplifier

3 Answers

Why does my amp stay in protect mode?


The most common reason an amplifier goes into or remains in protect mode is shorted output transistors. To eliminate other possible reasons for it to go into protect, read the following page.

Troubleshooting - Amp in Protect Mode

Aug 03, 2008 | DHD NTX-2139 Car Audio Amplifier

2 Answers

Amp keeps turning itself down - cant turn off 'protection'


yes,pls.stop plugging the system,you may harm your system if you do so,the system has it's own system analysis mode,and if there's something wrong in the circuitry,it will activate,you need the authorize service center my friend,it's a technical problem.

Dec 09, 2006 | Cambridge Audio Azur 540A Amplifier

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