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Targa Thump Series 3000W Protection Mode

Hi Peeps, I have a Targa Thump series 3000W 4Ch amp that has the protection light on. i switched it off completely but it remains on. How can I get it to work again? Thanks Brimo

Posted by Anonymous on

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Posted on Jan 02, 2017

  • 631 Answers

SOURCE: Amp protection light comes on when raising volume...

It sounds like you either have too low of an ohm load or the voltage is dropping at the amplifier's power terminal.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.


If the voltage remains near or above 12v, disconnect one speaker and see if it shuts down. If it doesn't, disconnect that speaker and connect the other speaker. If it only shuts down with both speakers connected and the voltage is staying above 12v, the ohm load is probably too low and you'll need to rewire the speakers.

Posted on Dec 31, 2007

SOURCE: Protection mode on Lanzar Vibe 241

check to make sure your power cable is hooked up well to the battery. i had this problem twice and this was the solution both times

Posted on Jul 01, 2008

  • 109 Answers

SOURCE: hi..phoenix gold x600.1 went into protection

Contact Phoenix Gold at 800.950.1449

Posted on Jul 17, 2008

  • 631 Answers

SOURCE: DUB 2502 Protection Mode help

The most common reason for an amp to go into or remain in protect mode is shorted output transistors. To eliminate other possible causes, read through the following page. Let me know if you have any other questions.

Amp in Protect Mode - Troubleshooting

Posted on Aug 07, 2008

  • 631 Answers

SOURCE: Audiobahn DUB Mag Audio 2502 Amplifier

If the protection light is on, the amplifier likely has shorted output transistors. To eliminate other possible causes, read through the following page.

Amp in Protect Mode - Troubleshooting

Let me know if you have any other questions.

Posted on Aug 09, 2008

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Kicker kx850.4 protection light stays on know power light


Check power make sure you have solid 12 volts. Disconnect speakers, shorted speaker can cause protection mode to engage. If still in protect mode will need to repair. Kicker does out of warranty repairs on kx series amps or try T.I.P.S contact at linearpower.com. Iirc Ray @ tips was one of the engineers at kicker back when kx series was introduced.

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Do you have a load (speakers) connected to the amp? Some amps shut down when there is no load connected?

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I have an older red sony xplod 500w 4ch amp. the power/protection light is glowing red. what does that mean and how do i fix it? I have no sound.


The protection light comes on if the amp overheats or if the speaker outputs are shorted.

Turn everything off and check all of your speaker wires for shorts. When you locate and repair the short, the protection light should go out and your amp will work normally again.

Hope this helps!

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Some amps very in what will happen first, some will blow the fuse and some may go in protection mode or the sound will come and go.

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If the protection LED is lit, the amp is in protect mode and probably has shorted output transistors. To eliminate other possible causes, read through the following page:

Amp in Protect Mode - Trubleshooting

Let me know if you have any other questions.

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2 Answers

Car amp


The most common reason for this is shorted output transistors. To confirm that the problem is in the amplifier, disconnect all speaker wires and the RCA cables. If the amp still goes into protection, check the DC voltage across the B+ and ground terminals. It should not drop below 11 volts. Also check the remote voltage.

If the amp continues to go into protect with no external connections (other than B+, remote and ground) and the voltage remaiins above 11v, the amp is defective.

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Hi, Off hand, I believe there is nothing wrong with the setup, maybe just not 100% compatible. It's just that the Sony Amp's protection is doing its job (just too good) and the stock radio is likewise doing it's job (but not too good). Just maybe, at poweron, the stock radio sends out a small burst output (maybe capacitor discharge) that we normally hear as a slight thump in the speakers which was when no Sony amp, ok. However, when you have added the amp, you also amplified the thump, which unfortunately the Sony protection reacts to. You can off course let it be since you have figured out a way to make it work or you can try and install a delay on for the power amp or separate it's power on from the stock stereo. The idea is to turn on the stereo with the Sony off and after a second or less, a manual switch or a delay activated switch will turn on the Sony. The idea is to switch on the Sony after the thump has finished. Good luck and hopes this gives you an idea. Pls post back how things turn up. Kind regards.

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3 Answers

Red LED "Protection Light is on" What is the problem


The red light means the amp is in protection mode. A few things can cause protection mode..... First disconnect the subs completely from the amp, and turn it on, if it powers up you have blown subs. Also try checking the main power wire at the battery...sometimes the current your meter is seeing is backfeeding from the remote wire, so your main power line could be blown at the fuse under the hood. hope this helps

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1 Answer

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If the display goes out then it is possible the flex cable is broken. Return it to Rockford for repairs.

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