Need help with my Alpine MRV amp

Tone Kapone · 1st March 2010, 09:17 PM

I have an Alpine MRV-1507 amp that goes into protection mode. I don't know why this is happening i've had this amp for about a year now and I threw it in a civic and it was working fine w/o problems. I recently took it out the civic to put it in a different car and it right away goes in to protection mode, before i even hook up the speaker wires. The green light for the power and Music(RCA) are green but only the protection shows red. I am running 4 gauge wires power/ground to this amp. But in the civic I was running 8 gauge wires and it was working fine. The fan also works inside the amp. If anyone has any answers that would be GREAT!!!!

Perry Babin · 1st March 2010, 10:16 PM

Shorted output transistors are the most likely reason for an amp to go into protect.

Have you done any troubleshooting inside the amp?

Do you want to try to repair the amp yourself?

Tone Kapone · 4th March 2010, 12:37 AM

no I haven't done any troubleshoothing to the amp I don't know what that is . yes i would like to repair it myself im new to this and would like to know how to fix probs for amps

Perry Babin · 4th March 2010, 01:56 AM

The first thing you need to do is to read the Basic Car Audio Amp Repair page (link below). Then, if you think you want to try troubleshooting, let us know.

1st March 2010, 09:17 PM	#1
Tone Kapone diyAudio Member Join Date: Mar 2010	Need help with my Alpine MRV amp I have an Alpine MRV-1507 amp that goes into protection mode. I don't know why this is happening i've had this amp for about a year now and I threw it in a civic and it was working fine w/o problems. I recently took it out the civic to put it in a different car and it right away goes in to protection mode, before i even hook up the speaker wires. The green light for the power and Music(RCA) are green but only the protection shows red. I am running 4 gauge wires power/ground to this amp. But in the civic I was running 8 gauge wires and it was working fine. The fan also works inside the amp. If anyone has any answers that would be GREAT!!!!

1st March 2010, 10:16 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Shorted output transistors are the most likely reason for an amp to go into protect. Have you done any troubleshooting inside the amp? Do you want to try to repair the amp yourself? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

4th March 2010, 01:56 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The first thing you need to do is to read the Basic Car Audio Amp Repair page (link below). Then, if you think you want to try troubleshooting, let us know. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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4th March 2010, 12:37 AM	#3
Tone Kapone diyAudio Member Join Date: Mar 2010	no I haven't done any troubleshoothing to the amp I don't know what that is . yes i would like to repair it myself im new to this and would like to know how to fix probs for amps

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