Brax X1400 blown fets. Help. - Page 2 - 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 1st December 2012, 04:58 AM   #11
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Sometimes it's used for shielding but the shield is generally copper and it's grounded at several points around the transformer to the primary ground.
  Reply With Quote
Old 1st December 2012, 05:19 AM   #12
diyAudio Member
 
jeanious2011's Avatar
 
Join Date: Nov 2010
Location: Texas
Wonder if its copper inside, i thought about trimming a little right where my damaged trace its to prevent contact and in order to fix the trace. Or should i desolder it in order to fix the trace? I know its a pita removing transformers since all the solder they have.


But this casing is not grounded, when u checked it with my meter it was open (between case and ground)

Last edited by jeanious2011; 1st December 2012 at 05:21 AM.
  Reply With Quote
Old 1st December 2012, 05:38 AM   #13
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
If you're referring to the component between the terminals, I think that's either a capacitor or an inductor. If so, there are likely only 2 terminals to desolder.
  Reply With Quote
Old 1st December 2012, 05:44 AM   #14
diyAudio Member
 
jeanious2011's Avatar
 
Join Date: Nov 2010
Location: Texas
I believe its a transformer simply because it has 12 pins that look like stranded wire. Check the pics i posted (bottom view of the pcb)
  Reply With Quote
Old 1st December 2012, 05:52 AM   #15
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
When I come back to a thread, I always go to the last post so I missed those photos. If you post twice since I've last replied, you should mention the other posts.

I've emailed someone to see if they could tell me what that part is.
  Reply With Quote
Old 1st December 2012, 05:56 AM   #16
diyAudio Member
 
jeanious2011's Avatar
 
Join Date: Nov 2010
Location: Texas
Sorry and will do, i see your helping everyone and i would like to appreciate your time and effort.


Let me know what you find out.. Trace can be fixed in the bottom of the pcb since i know where its going on top. Just don't know what would be reliable, solid 12g copper wire?
  Reply With Quote
Old 1st December 2012, 06:05 AM   #17
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I would use several passes of desoldering braid saturated with solder. I think you should be able to repair it without removing the component above the trace. You could slide a piece of Kapton between the trace and the device to prevent contact.
  Reply With Quote
Old 1st December 2012, 06:30 AM   #18
diyAudio Member
 
jeanious2011's Avatar
 
Join Date: Nov 2010
Location: Texas
Ok. I'll try to repair it without removing it, I'll solder a solid copper wire underneath the pcb.I'll order the irfz46n.


When i checked the driver outputs i notice the two ch's on one side read very different from the other side.For example, one side read 6k ohms while the other side was 3m ohms.

Should i replace the b+ caps since their in the circuit of the damaged trace, they are 5000uf 18v audio grade caps. Don't know if they got damaged. But I'll remove one and check the capacitance but that's as fat as i can check until i get a the proper equipment for testing caps.

Last edited by jeanious2011; 1st December 2012 at 06:34 AM.
  Reply With Quote
Old 1st December 2012, 02:42 PM   #19
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
If they didn't vent or leak, they're likely OK.

Audio-grade caps on the primary side of the supply?

The guy I emailed had to check with someone else so I'm still waiting.
  Reply With Quote
Old 1st December 2012, 07:04 PM   #20
diyAudio Member
 
jeanious2011's Avatar
 
Join Date: Nov 2010
Location: Texas
Sorry not audio grade caps, they are 5000uf 18v and there is two of them.

In order to make the repair reliable i would have to remove the component that's above the damaged trace (in thus case maybe a transformer, like the ones the old school pg's used -- and other similar designs).

I don't want a damaged trace underneath that big component.
  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
Blown parallel FETs? Yooper Power Supplies 3 21st October 2012 12:06 AM
Autotek Super Sport At2000.1 blown psu fets substitude ivkata Car Audio 2 17th April 2012 03:26 PM
Rockford Fosgate 60ix FETs blown LazySteve Car Audio 12 23rd June 2011 08:48 AM
Brax, Helix Schematic senee Car Audio 2 1st February 2008 05:42 PM
Brax amplifier help (no output) MCD007 Car Audio 10 10th January 2008 08:33 PM


New To Site? Need Help?

All times are GMT. The time now is 07:43 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