Question about Alpine MRD-M501 Car Audio Amplifier

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Have no sound

My amp lights turn on but no sound. Does any one no how to turn off the safe mode

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  • minitrukkrr Nov 21, 2007

    i have the same problem aparently this is common with theses amps you can get them reprogramed.

  • atsnipes Dec 26, 2008

    My amp light comes on, voltage reads 14 V which is correct, current reads "- - -" and no sound from subwoofer. I did touch terminals on accident.

  • Anonymous Mar 17, 2009

    The **** turns on but no power to my sub

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More info needed. It's like asking how to completely disassemble a car and expecting us to do everything for you. Please take some time to do a bit of research on your part so that we can better assist you and not have to work hours to answer your question.

Posted on Nov 02, 2006

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Posted on Jan 02, 2017

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1 Answer

After automatic updates and a restart, diagonstic lights A & C were yellow and D & B green, nothing comes up on screen, this happen before after an update but i got it to start after several a


If all diagnostic lights are on, then that means that it has something with the software of your computer. The update has affected some of the programs inside your computer thus it's booting up fine.

I suggest that you access safe mode and do a system restore from there. If you don't know how to access safe mode, then follow these:

1. Turn off your computer.
2. turn it on and keep tapping F8 until you see the options. You should see safe mode.
3. Use the arrow keys to select safe mode, then press enter.
4. Your computer should boot up to safe mode.
5. Access the system restore. You can find it in accessories, system tools, system restore. or you can search.
6. restore your computer to the known good date where your computer was still working fine.
7. After completing the on screen procedures, let your computer restart by itself (it may take minutes or more). It will restart and it should boot to the normal windows.

Good Luck!

I hope this helps.

Carlo

Nov 16, 2012 | Dell Dimension 2400 PC Desktop

1 Answer

I have a Sceptre X7G-Naga VI 17 inch LCD Monitor When I turn the monitor on and boot the computer I get the red light for a sec then the blue light comes on I will also see windows booting up but the...


try with restarting computer & press F8 at the same time. u will see a menu where choose "safe mode" & start the computer. in safe mode see the display properties, set the refresh rate & resolution according to monitors specifications, apply & restart again. if that does not work, replace the main board of lcd monitor.

Aug 25, 2011 | Sceptre 17" LCD Monitor

1 Answer

Safe mode light is always on amp willmnot turn on


this is because this amp has been overheated and the power supply inside the amp can only go into safe mode. this is whats known as "burned" or severely overheated components inside the amp. this is caused by demanding more power than the amp can handle causing so much heat that the components literally melt and ground themselves out causing an instant short when you connect the amp.

May 10, 2011 | Lanzar MXA282 Car Audio Amplifier

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Turn volumne up over half red light comes on flashing an no sound . I have to turn ampoff then back on . this will reset it but I still can't turn it over 1/2 volumne. Thanks Gerald


It's going into "safe" mode. Basically you're overdriving your speakers and amp is sensing it. Check for proper him rating at speakers vs output rating of amp. If they match up, then one of your speakers is causing the issue.

Mar 07, 2011 | Cambridge Audio Azur 340A 2-Channel...

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Netbook Wont Turn On!!!


Restart your computer and keep pressing F8 and choose safe mode from the menu
once you enter safe mode,click on start->settings->control panel->system and then device manager
and under display adaptors,disable your display card and then restart it again and see if it works

Jul 22, 2010 | Asus Eee 701Sd Notebook

1 Answer

Amp will not put out sound The red light comes on


yes you have a internal fault of the amp. the circuit that puts it into safe mode is bad and that is a very small chip on the board know as a op amp. needs to be repaired.

Dec 28, 2009 | Solid Audio Formula Series F2000 2-Channel...

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Sony Vaio VGN-A417M. Could someone please tell me how to siort out my laptop. Whenevr i turn it on it comes up with balck screen with'Error Loading Operating system'? thanks in advance.


Hello snowdonian,

You may need to reformat your Vaio. Some important components of your operating system may be corrupted.

If you're using Windows XP, check this link out,
http://helpdesk.its.uiowa.edu/windows/instructions/reformat.htm

But before you reformat, you might want to give it a shot & go to safe mode. If you're able to go to safe mode, you can save important files like pictures, documents, etc.

To go to safe mode, keep pressing the F2 button when you turn your laptop on.

Just choose safe mode & you should be all set.

If it won't go to safe mode, then you can proceed & reformat your laptop.

Hope this helps & best of luck!


Art Pena
Tech Support

Dec 06, 2009 | Sony VAIO V2M (VGCV2M) PC Desktop

1 Answer

My amp keeps going to safe mode.


It sounds like the voltage drop created by starting the vehicle is causing the amp to go into safe mode. Try starting the car before turning on the stereo system. Then turn on the stereo and see if it functions normally. If this is the case you can either live with it or possibly upgarde the amps power supply by adding a capacitor, larger battery and better cabling to the amp if necessary.

Aug 09, 2009 | Cadence Z8000 Car Audio Amplifier

1 Answer

No sound is coming out


Hello christheline,

First make sure that the amp is powering up properly and that the input and subwoofer(s) are connected.

Check that the amp is not in "safe mode".

1. Press the MODE button.
Press the UP or DOWN button until “9” is displayed.
2. Press the ENT button.
3. Press the UP or DOWN button until “9-1” is displayed.
4. Press the ENT button.
5. Use the UP and DOWN buttons to turn safe mode ON.
6. Press the ENT button.

If this does not work, either the input from the head unit, the subwoofer(s), or the amp itself is probably defective.

Hope this helps.

May 28, 2009 | Alpine MRD-M300 Car Audio Amplifier

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

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