Alpine MRP-M1000 no sound - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 23rd June 2011, 08:22 PM   #1
diyAudio Member
 
Join Date: Jun 2011
Default Alpine MRP-M1000 no sound

Ok i bought this amp off amazon i bench tested it and it worked unhooked it and fired it up four days later and now there is no sound and sounds like im going to be stuck making payments on a dead amp. when i hooked it up the second time i noticed the blue light flickering and the subs were making a popping noise with nothing hooked up to it. If someone has a service manual on this can i get it? thanks for any help.
  Reply With Quote
Old 23rd June 2011, 11:11 PM   #2
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
Check output MOSFETs first for shorts.
__________________
PCBCAD50 software. http://www.murtonpikesystems.co.uk
  Reply With Quote
Old 23rd June 2011, 11:19 PM   #3
diyAudio Member
 
Join Date: Jun 2011
Pics of what I should test would be helpful
  Reply With Quote
Old 23rd June 2011, 11:56 PM   #4
diyAudio Member
 
Join Date: Jun 2011
ok here is what i know. the amp must be shorting out somewhere when i try to do a bench test with the ATX power supply like i always do. once the amp turns on it makes the PSU power down. i am connecting with 12 volts 18 amps. If i connect it to a battery it stays on.
  Reply With Quote
Old 24th June 2011, 12:52 AM   #5
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
You need to use a multimeter on the output transistors to see if any pins are shorted.
__________________
PCBCAD50 software. http://www.murtonpikesystems.co.uk
  Reply With Quote
Old 24th June 2011, 10:57 PM   #6
diyAudio Member
 
Join Date: Jun 2011
This may be a dumb question but is it possible to fry the amp with a multimeter?
  Reply With Quote
Old 26th June 2011, 04:06 AM   #7
diyAudio Member
 
Join Date: Jun 2011
i tested the amp again today on a battery the light stays solid and flickers when it does this it makes the subs pop. i did so testing with a multimeter and found that some transistors were going up to 20 volts at times.
  Reply With Quote
Old 27th June 2011, 05:25 PM   #8
diyAudio Member
 
Join Date: Jun 2011
Im having the same problem but the light isnt flickering and im pretty sure i fried a transistor the pins look burnt i was wondering if anyone knew where to get transistors for this amp
  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 mrp-m1000 mike49504 Car Audio 47 17th June 2013 11:48 AM
No output from MRP-M1000 BlackCivicHatch Car Audio 25 26th January 2013 10:33 PM
Alpine MRP-M1000 mike49504 Car Audio 20 4th June 2011 03:37 AM
Alpine MRP-M1000 mike49504 Car Audio 7 30th January 2011 09:57 PM
Alpine MRP-M1000 argonrepublic Car Audio 2 11th August 2009 02:28 PM


New To Site? Need Help?

All times are GMT. The time now is 09:45 PM.


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