Question about DHD NTX-2139 Car Audio Amplifier

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Why would my amp stay on protection mode? i have changed the groud wire and the power wire and the red light on my amp is still on

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Disconnect rca and speaker wire if its still on u may have a problem with ur amp

Posted on Feb 03, 2010

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1 Answer

My 4 channel amp keeps going into protect mode when i power on,its not a imminet light,but it blinks once then dies out,plz help


Remove all speaker inputs and outs and just have your 12volt battery, ground and radio remote connected and power up the amp. If it turns red instantly, then the amp is shorted/blown. If it stays green, then install your speaker inputs and outs one at a time. make sure your amp is on while your doing this. if the amp goes into protect mode, take note of which wire it was for it's most likely shorted. Fix that shorted wire and the unit should stay on.

Apr 13, 2010 | Car Audio & Video

1 Answer

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

1 Answer

Unit only stays on for 4 seconds then turns itself off.


This is a short or unstable ohm load. Remove all speaker wire connections to see if the amp will stay on.
If the problem goes away when disconnecting the speaker wires try this:
1) Check volume level on zone one and zone 2 if connected. If it is too high the amp will go into protect mode and shut off exactly as you described.
2) Make sure no wires are touching any other wire or the metal surface of the amp. This will cause a short and send the amp into protect mode.

Nov 21, 2009 | Denon AVR-1705 Receiver

1 Answer

The indicator light on the amp is staying red in protection mode how do i get it out of protection mode?


Check your manual, sometimes you have to take it back in, depending on the protection. Sometimes you have to change up the fuse. Is there enough power going to the amp, or to much?

Oct 15, 2009 | AudioBahn DUB Mag Audio DUB2502 Car Audio...

1 Answer

Sony xplod amp(XM-1652Z ) power/protect light


if your amp is overheating your sub is needing to much power that the amp doesnt have.
if its cutting out and the red light comes on you need to check the wiring. nothing not even the tinyest speaker wires can be touching.
proper wiring would be your best bet.
but i would upgrade amps.
cheap bang isnt reliable.

Apr 06, 2009 | Sony Xplod XM-1652Z Car Audio Amplifier

2 Answers

My amp stays in protection mode


Does it go into protect in the vehicle if you disconnect the speaker wires from the speaker terminals of the amp?


Nov 29, 2008 | Sony XM-2002GTR Car Audio Amplifier

2 Answers

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

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

2 Answers

Tc 4002 audio car amp


The red light is normal and indicates the amp is powered up. Check your signal wires (RCA patch cords?) and speaker wires. Need more info to be of more help. What receiver are you using? How is it connected to the amp?

Jul 24, 2008 | MTX 4002 Car Audio Amplifier

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