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It seems the amps went into protect mode?

I change the fuses and still nothing, any suggestions.

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Is any wires touching like in the speaker or @ the speaker or amp

Posted on Nov 17, 2008

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2 Answers

Amp Protection Mode


TRY DISCONNECTING IT FROM THE BATTERY FOR ABOUT AN HOUR. SEE IF THAT HELPS.

Nov 17, 2013 | Car Audio & Video

1 Answer

I wanna supplied my Amplifier Lanzar MNX 250 with an 12V - 30 Ohm battery, but the led of my amplifier is red and my speaker doesn't play music. How can I fix the "protect mode" in which the...


  1. The battery is 12 volts and Ohms has nothing to do with your amp installation.
  2. Was the amp running and got hot? Many times an amp will go into "thermal mode" when used for an extended amount of time and need to cool down but I assume if you are trying to hook it up you were not using it.
  3. You need to check the ground wire real well. A loose ground will cause protect mode.
  4. Recheck the speaker wires and their connections. If they cross this to can cause protection mode.
  5. This is a 4 Ohm amp, are your speakers 4 ohm or lower> If not then you may be running to low of a load to your amplifier.
  6. I always remove everything from the amp first and power it on and then add wires and see where which connection throws the amp into power mode.
  7. Check the fuse as well but if the LED is on chances are your fuse is good.
  8. If you check all of the items I listed and the amp still goes into protect mode then your amp is bad.

Regards, Tony

May 05, 2011 | Lanzar MNX250 2Channel Car Amp

1 Answer

My reciever went to protect mode after my speaker wires touched. I removed all cables and power for an hour but stays in protect mode. I also changed 2 15 amp fuses inside but nothing unless I take fuses...


Yes, you can do this easily.
Perform the following steps
(1)Plug your amp to AC outlet.
(2)Switch it on.
(3)observe time taken for switching off.
(4)immediate to shut down over current protect(5)3 seconds to shut down DC protect.
If over-current protect do the
following steps
(O)unplug the amp.
(1)download NR806 service manual.
(2)open the amp metal cover.
(3)measure 7 large white resistors resistance loacated next to power transistors mounted on a large heat sink with black probe touching the middle pin and red probe to first/left or third/right pin.
(4)If this 3 Pins large white colour 0.22ohm x 2 resistor is open with infinity ohms ,
(5)replace it and jot down this channel for example left surround faulty. Usually only 1 channel went faulty.
(6)the two large power transistors next to this white resistor 0.22 ohms x2 should also be replaced.
(7)plug the amp
(8)switch it on
(9)if ok, troubleshooting get done
(10)if not ok
(11)replace ALL the components of this power amp channel.
(12)pre-amp section no need to check.

Nov 23, 2017 | Onkyo TX-SR806 Receiver

1 Answer

Jbl am in protect mode


if it goes in protect mode means ur amp is turn up to high or it is over heating so it protectn it from fryn ur amp try to adjust it down

Jul 12, 2009 | JBL BP1200.1 Car Audio Amplifier

1 Answer

Fuse blew on power now stuck in Protection Mode


Sounds like the out put stage of the amp is shorting, They are either 4 large transistors attached to an aluminium plate (heatsink) or one large chip with heatsink. also sounds as the driver stage went too when you switched it on the second time. If you know nothing of electronics I suggest you take it to an audio repair shop, as it is cheaper to repair than replace high power amplifiers.

Mar 29, 2009 | Audio Players & Recorders

1 Answer

Amp problem


could be one side of spk voice coil bad if they ar dualor rca problem

Mar 29, 2009 | Blaupunkt PCA465 Car Amp

3 Answers

Guru


I was moving around my large woofer speaker last night and then all of a sudden the unit went into protection mode. I tried all the various solutions posted on here and nothing worked. Then I went back to my speaker connections on the woofer and unplugged them and plugged them in again and it seems to be ok now. Very annoying problem. Can I suggest unplugging all the speaker cables and replugging them back in. Also another solution may have been holding down the power button when powering up the unit. Give all the above a try.

May 22, 2008 | Samsung HT-TQ85 Five DVD 5.1 Channel Home...

2 Answers

LED Light is on, but no sound from sub at all.. Have double backed on all wires but still nothing! HELP!!


if you change amps and it goes on protection the speakers are blown causing the amp to protect try changing speakers

Mar 24, 2008 | Car Audio & Video

1 Answer

Stuck in protect mode


Speakers shorted out, blew a fuse. Replace the unit or (cross your fingers and) open up the box and find the blown fuse.

Nov 23, 2007 | Sony STR-DE425 Receiver

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