Fixing my MRV-1507... - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 30th October 2013, 01:50 AM   #1
diyAudio Member
 
Join Date: Oct 2013
Default Fixing my MRV-1507...

I picked up a broken mrv 1507 for cheap...

Right now I'm using a modified xbox power supply, ~12v at ~13amps. Don't laugh, it works well for its intended purpose.

I don't have much equipment at home, but I have access to just about anything I need at work

Is there a service manual/schematic available?


Symptoms:
Power light: not on. It might come on when I first hook it up.
Music light: solid green
protection light: solid red, not flashing
Fan is spinning

Where should I start?

Last edited by whitrzac; 30th October 2013 at 02:22 AM.
  Reply With Quote
Old 30th October 2013, 02:13 AM   #2
diyAudio Member
 
Join Date: Oct 2013
D606, d607, d608, d609 are shorted from pins 1-3
  Reply With Quote
Old 30th October 2013, 02:16 AM   #3
diyAudio Member
 
Join Date: Oct 2013
Non of the power supply transistors are shorted
Non of the audio supply transistors are shorted.
  Reply With Quote
Old 30th October 2013, 03:12 AM   #4
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Do you see any significant DC across the speaker terminals of either channel? Monitor the voltage from the time you apply remote and for about 10 seconds afterwards?
  Reply With Quote
Old 30th October 2013, 10:47 AM   #5
diyAudio Member
 
Join Date: Oct 2013
ch1 gets a ~2v ish spike when turning on.
Ch2 does not.
  Reply With Quote
Old 30th October 2013, 03:03 PM   #6
NIJosi is offline NIJosi  United Kingdom
diyAudio Member
 
Join Date: Oct 2013
Location: Belfast
Did you manage to get a schematic ok?
  Reply With Quote
Old 30th October 2013, 03:13 PM   #7
diyAudio Member
 
Join Date: Oct 2013
I'm still looking...
  Reply With Quote
Old 30th October 2013, 04:19 PM   #8
rickcl is offline rickcl  United States
diyAudio Member
 
Join Date: Mar 2003
Location: California
Whitrzac send me a PM I might be able to help with info.
  Reply With Quote
Old 30th October 2013, 06:57 PM   #9
diyAudio Member
 
Join Date: Oct 2013
Thanks.

Now the real fun can begin...
  Reply With Quote
Old 30th October 2013, 09:15 PM   #10
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Channel 1 is probably causing the amp to go into protect mode. You need to begin checking the output transistors in that channel. If they are not the problem, you probably have a leaky driver or pre-driver transistor.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Alpine MRV-1507 seankane Car Audio 48 13th January 2013 02:15 AM
Alpine MRV 1507 Tom7227 Car Audio 1 15th June 2012 05:02 PM
Alpine MRV-1507 mike49504 Car Audio 2 2nd February 2012 06:43 AM
(MRV-1507) Need Help Please zipmyfly Car Audio 16 30th September 2011 06:03 AM
Help fixing Alpine MRV 1507 mk2singh Car Audio 173 9th July 2011 08:11 AM


New To Site? Need Help?

All times are GMT. The time now is 10:53 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2