MTX Thunder Power supply drive issues.

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
ok so i am working on a mtx again. I have a square wave at the gates but i have 0v as well. So i. could use some help getting the power supply up and running.
 

Attachments

  • 15758435634487996011406026931029.jpg
    15758435634487996011406026931029.jpg
    1 MB · Views: 116
i know very little about these amplifiers, other than what i read in the tutorial, that they are different.
here is the drive signal. The problem is no audio, current draw is not even registering on my power supply's gauge.
This is the drive wave on the pads.
 

Attachments

  • 15758464839811544122437076695519.jpg
    15758464839811544122437076695519.jpg
    840.6 KB · Views: 104
One of the mspa56 transistors was failing intermittently. when i first tested regulated was present +-15vdc then just now it was missing?
So i replaced it and it is now drawing current at idle., but i has the 45vdc on the speaker terminal. i pulled both outputs and tested them both were good.
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.