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Alpine mrv-f345 turns on but wont play sound - Alpine MRD-M301 Car Audio Amplifier

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

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Duncan
  • 218 Answers

SOURCE: Over heating

Are you sure it is overheating? Maybe you have the wrong speaker load and it is reacting to that. Is the unit shutting off when it "over heats"? Are you bridging and how many speakers are you using in what configuration (series/parallel)? Since you have two "new" amps doing the same problem and neither fan is turning on then I think you have a hookup problem and not a fan problem. Since you say you are using a large gauge of power wire (I'll assume you have an adequate connection to the chassis/ground) then that leaves only the speaker loading. I think you need to fix this problem quick before it blows your amps though. Good luck.

Posted on Jun 18, 2007

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StuartB
  • 807 Answers

SOURCE: blinking protection light on mrv-t757 amp

Could be the power supply or output stage electrolytic capacitors.
Possibly breaking down/drying out inside.

Posted on Mar 17, 2008

  • 1 Answer

SOURCE: Fan not working

Mine too! I took it to my dealer. They said they had to send it to Alpne to be reprogrammed. I'm getting it back on next week.

Posted on Aug 07, 2009

  • 102 Answers

SOURCE: alpine mrv-f345 cuts off when...

Yes sounds like your not getting enuff power from the battery could be your alternator you should have it tested. Also have you try'd a capacitor? I put one in my car and it stopped cutting out...

Posted on Feb 05, 2010

  • 31 Answers

SOURCE: Alpine mrv-f307 amp played for 10 seconds then

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Posted on Mar 20, 2010

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1 Answer

Alpine mrv-f345 cuts off when...


Yes sounds like your not getting enuff power from the battery could be your alternator you should have it tested. Also have you try'd a capacitor? I put one in my car and it stopped cutting out...

Feb 05, 2010 | Alpine MRV-F345 Car Audio Amplifier

2 Answers

Alpine Amplifier Cuts in and out on Passenger side while driving


Make sure wirings are not pinched and try replacing the fuse as well.

May 01, 2008 | Alpine MRV-F345 Car Audio Amplifier

1 Answer

My amp turns on but the sound goes in an out


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.

Jan 25, 2010 | Alpine MRV-F345 Car Audio Amplifier

2 Answers

Fan not working


iT SOUNDS LIKE THE FAN IS NOT WORKING RIGHT, SO CHECK OTHERWISE IT WILL COOK YOUR AMP

May 16, 2009 | Alpine MRV-F345 Car Audio Amplifier

1 Answer

Mrv F345 power cut out and now the screen flashes blue


disconnect all of the speaker wires at the amp and turn your system on -if the amp stays on then you likely have a roasted coil in one of your speakers somewhere and causing a short which is shutting your amp down into protection mode-if the amp wont stay on with nothing connected to it then you have probably roasted something inside the amp and uhhh good luck bro

May 09, 2009 | Alpine MRV-F345 Car Audio Amplifier

1 Answer

Wiring door speakers


Just make sure that the speakers are the correct impedance and properly rated. If not, the amp can be damaged.

Jerry G.

Apr 27, 2008 | Alpine MRV-F345 Car Audio Amplifier

1 Answer

Alpine MRV-F345 VLT ERROR


Hello,

This is an indication of a voltage error, I have seen this when the voltage regulator or the car battery is begining to have a problem supplying enough current to the amplifier. Check the voltage levels with the amp turned off and then turn on the amplifier, if the voltage drops this means that there is poor voltage regulation and this may mean that you will have to replace the car's voltage regulator.

I hope this helps,

Thank you,

Shuttle83

Apr 20, 2008 | Car Audio & Video

1 Answer

Blinking protection light on mrv-t757 amp


Could be the power supply or output stage electrolytic capacitors.
Possibly breaking down/drying out inside.

Mar 17, 2008 | Alpine MRV-T757 Car Audio Amplifier

2 Answers

Over heating


you trouble shoot the problem by opening unit and force-powering fans to test for overheating during "being used loud for a few minutes". Read the fans' label for proper voltage to apply and proper polarity. I am guessing the fans will run on car battery voltage of 12 volts. Also, attempt to close up the unit to simulate real conditions. There should not be fuses for the fans. If unit is now cooling, then look for faulty thermistor, which turns the fan on during rising temperature. Once thermistor is located, a fast test is to "jumper" its two wires to simulate turn on.

Jun 16, 2007 | Alpine MRV-F345 Car Audio Amplifier

1 Answer

Alpine Amplifier Cuts in and out on Passenger side while driving


this isnt a complex problem but both units may need service

Mar 12, 2007 | Alpine MRV-F345 Car Audio Amplifier

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