MTX TA7801 repair - Page 15 - 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 16th March 2009, 02:13 AM   #141
diyAudio Member
 
Join Date: Dec 2007
I just replaced it. Same scenario, it heats up to 105 degrees F.
  Reply With Quote
Old 16th March 2009, 02:21 AM   #142
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I don't know what else you can do. The 5532s run hot but they shouldn't run that hot. It may survive as it is.
  Reply With Quote
Old 16th March 2009, 02:27 AM   #143
diyAudio Member
 
Join Date: Dec 2007
Ok, well i'll run it hard and see what happens. Im crossing my fingers that either it will be fine, or if there is something else wrong that's causing the current draw/opamp temps, then then I hope that part will blow so I can find it

Thanks for your help!
  Reply With Quote
Old 9th August 2010, 12:44 AM   #144
diyAudio Member
 
Join Date: Jul 2008
Default TA7801 making some noise after the REM turn off

Im having problem on my MTX TA7801 which the amp has no problem hitting the bass out but once I turn off the REM, it start to discharge and making some noise to my woofer.
I've been troubleshooting it for couple of month but still can solve it.
Anyone here can help?
  Reply With Quote
Old 9th August 2010, 05:06 AM   #145
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
If you disconnect the RCA cables from the amp, does it make the same noise?
  Reply With Quote
Old 9th August 2010, 08:37 AM   #146
diyAudio Member
 
Join Date: Jul 2008
Yup. Disconnected the RCA also produce some noice when turnning off. I have try to change the processor board from other TA amp. The result also the same.

Currently, im trying to check is there a discharge circuit for this amp.
Will there be possible also the JFET controlled the Optocouple failed?

Ahhh...so many possiblity which I don't know where to start.
  Reply With Quote
Old 11th August 2010, 09:23 AM   #147
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
The JFET isn't likely defective.

Does LED400 go off immediately when the remote voltage is removed?
  Reply With Quote
Old 11th August 2010, 10:55 AM   #148
diyAudio Member
 
Join Date: Jul 2008
Yes. LED400 light when normal operation....and imeadiate OFF when remote turn ON is removed.
  Reply With Quote
Old 9th August 2011, 05:30 PM   #149
diyAudio Member
 
Join Date: Aug 2011
Default MTX TA7801 FET ID PLZ

I have a MTX TA7801 that doesn't work have fets 104,106,108,110,112 all burned beyond idenification as well as FETS 103,105,107,109, and 111 broken in half but appear to be a marked n520ak. Does anyone know what these fets are and where I could purchase them?
  Reply With Quote
Old 9th August 2011, 06:11 PM   #150
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
There should be other numbers on the FETs. Start a new thread and post the other numbers on the FET.

There will be no more replies to this in 'this' thread.
  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
DHD should repair? Solosound Car Audio 5 9th November 2008 07:39 PM
my amp repair benlebow Car Audio 3 10th February 2008 12:30 AM
Nad 304 repair big jim Solid State 0 30th December 2006 11:19 AM
amp repair KEEBIE Car Audio 2 31st October 2006 04:48 PM
Help for repair my KSA 100 Alex helge Solid State 76 23rd October 2003 03:38 PM


New To Site? Need Help?

All times are GMT. The time now is 04:35 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