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Amplifier in protection

Un hooked checked all and it won't even turn on in the green even with the ground power and remot r only the last time it had speakers hooked up it made a thump beat that was not music like a heart beat

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  • Car Audio & ... Master
  • 16,147 Answers

That thump beat was called motor boating and is amplfier oscillation. It means that a driving transistor in the audio output circuit is bad. You will have to send this in.

Posted on Apr 21, 2014

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Posted on Jan 02, 2017

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SOURCE: Car amp's stopped working. Putting out a heart beat sound through subs but no bass.

could be low current ,disconnect all power including ground for 20min N.B most amps will seem to be shorted at output but this is normal due to damping ratio.

Posted on Aug 09, 2007

  • 631 Answers

SOURCE: lightning audio B300.4 amp protect light

The most likely reason for it to go into protect is shorted output transistors.

Posted on Jan 16, 2008

  • 631 Answers

SOURCE: Amp Power light will not go on. Protection light is lit- Thump sound in speakers

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.

Posted on Nov 02, 2008

  • 2 Answers

SOURCE: speakers cut off when bass goes up...

you may be running 2 low of ohm load

Posted on Feb 14, 2009

kingkc1987
  • 4 Answers

SOURCE: amp goes dirctly into protect

ok well it could be two thing wrong your amp dont have a good ground or your amp is a smar amp and your subs must have to be hooked up so the power from the amp cn go to the subs so the amp can see that you do have subs hooked up to take it out of protect o and look at your fuses to to smal or to big will send it to protect to

Posted on May 19, 2009

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4 Answers

I have an xterminator xt2000d amplifier which is stuck on protection mode. It keeps on trying to switch over to full power but stays in protection mode. I unplugged speakers same thing replace fusses same...


sometimes the problem isn't noticeable. it could be a problem in the circuitry itself. how old/new is the amp? is the ground solid? what gauge is the wire? try hooking it up to the battery directly and instead of hooking up the remote wire from the head unit to the amp use a "jumper" (short wire) to connect it from the amp power wire terminal to the amp remote terminal. if its still in protect after that then the amp is bad and needs repair...

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I hooked up 2 capacitors into my amp and every time I put power to it the amp shuts off and 10 seconds later a red light comes on for 5 seconds and the amp don't turn on, basically it goes into protect...


Well, I have no idea why you would have two capacitors on a 500 watt amp but, did you charge the capacitors? Have you tried the amp without the capacitors? What size power wire are you using?

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Havin problem with a1200 class a/b amp it ligts green and red at same time after hooking in remote how doi fixdo i need diagram to fix


Make sure you don't have any shorts on your speaker wires or rca cables. Unplug one at a time, the turn on power until it stays green with no protect light, then you know what input is causing the short. If you remove all speaker wires and rca wires and all you have connected is the ground, power(12volts) and remote and it still lights up red/green(in protect mode) then your problem is the amp.

Mar 09, 2010 | Car Audio & Video

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Sony xm gtx1852 amp new and worked for 1 day now is in protect mode even with nothing hooked up but the remote and power and ground.


meter the power side of the amp. sometimes the amp will go into protect if it doesnt have power. if power and remote and ground are good the amp is probably bad.

Dec 29, 2009 | Sony Xplod XM-1652Z Car Audio Amplifier

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Amp goes green at first then protection.


check the impedance load or try a different ground. when you hook your ground up always make sure you sand the metal down before you connect to ensure a good and clean connection.as for the impedance, make sure your subs are wired to the right ohms. for example, if your subs are wired to 2 ohms or even 1ohm, and your amp is only 4 ohms, then it will do exactly what your saying it does.

Sep 19, 2009 | Car Audio & Video

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Green light (protection mode) on, NO red light (ready)


double check your wires aren't shorting out or power or remote wires aren't grounding. check if speakers are blown with nine volt battery

Sep 05, 2009 | Kenwood Car Audio & Video

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Protect led light


It appears that the amp is going into protect mode. To eliminate external causes, read through the following page. Let me know if you have any other questions.

Amp in Protect Mode - Troubleshooting

Oct 10, 2008 | Car Audio & Video

2 Answers

Amp


Sisnce you didn't mention the protection LED, I'll assume it's not on.

You need to measure the voltage across the B+ and ground terminals of the amplifier to confirm that the voltage at the terminals is least 11 volts. Also check the voltage on the remote turn-on terminal. Place the black meter lead on the ground terminal of the amp and set the meter to DC volts.

Nov 07, 2007 | Power Acoustik LT-980/2 Car Audio...

2 Answers

Amplifier stays in protect mode


If the positive power cable touched the ground, the fuse inline should have blown. Did it?

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