Mcintosh mc440m in protect mode - diyAudio
Go Back   Home > Forums > General Interest > Car Audio
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 18th October 2010, 02:45 AM   #1
diyAudio Member
Join Date: Sep 2010
Default Mcintosh mc440m in protect mode

i purchased this amp used off ebay. when i originally powered it up,the amp did nothing. i proceded to take it apart. i found a overheated wire[ BROKEN] in the circuit board coming from the sub sw. and going to an input amp. made the repair, repowered the amp and the fans turned on but so did the protect led. when the amp is in 4 5 or 6 ch with sub sw. to out, the amp stays in protect. when in 6 ch with sub sw to 120 or 80, protect led goes off. i have replaced all leaking caps but still the same.i was hoping someone from here might be able to point me in the right direction. thanks in advance, shawn
  Reply With Quote
Old 18th October 2010, 04:37 AM   #2
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
If you set the switches so that it doesn't go into protect mode, does it produce audio?
  Reply With Quote
Old 18th October 2010, 12:14 PM   #3
diyAudio Member
Join Date: Sep 2010
Default mc440m

no, i haven,t tried that. wasn,t sure if it could damage my head unit. ill try on an old one tonight. thanks
  Reply With Quote
Old 20th October 2010, 01:22 AM   #4
diyAudio Member
Join Date: Sep 2010
Well i got it hooked up and ch 1 2 3 &4 seem to work fine in 6 ch with sub sw. set to 120 or 80. As soon as i switch the sub sw. to out, it goes into protect mode and i get no sound from ch 1 2 3 or 4. Any suggestions, thanks shawn
  Reply With Quote


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
Protect mode on Sony TA-N9000ES eforer Solid State 0 28th March 2010 11:15 PM
Onkyo TX-SV444 goes into protect mode morgangdfp Solid State 2 28th January 2009 12:46 PM
Help....PPI 2360 won't come out of protect mode ??? kombos Car Audio 11 11th July 2007 01:20 AM
Mcintosh MC440M Manual senee Car Audio 0 6th February 2006 02:18 AM
onkyo amp txsv717 not working(protect mode) Tabatha Koger Parts 0 3rd February 2005 09:25 PM

New To Site? Need Help?

All times are GMT. The time now is 07:30 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2