diode question - 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 11th November 2008, 01:54 AM   #1
diyAudio Member
 
Join Date: Sep 2006
Default diode question

im working on an ads amp and the diodes that were in it were fep16ct and fen16ct i replaced them with u1620 and u1620r are theese the same because now there is no sound out of any of the channels and there was before i replaced all of them because 2 channels didnt work now none work
  Reply With Quote
Old 11th November 2008, 03:34 AM   #2
diyAudio Member
 
Join Date: Dec 2005
Location: Northern California
The diodes are good, I would check polarity for correct positioning on the board. Try a voltage measurement also...
  Reply With Quote
Old 11th November 2008, 03:43 AM   #3
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Is it producing rail and regulated voltage?
  Reply With Quote
Old 11th November 2008, 02:43 PM   #4
diyAudio Member
 
Join Date: Sep 2006
not sur if i did it right but on the set of diodes i didnt replace when ap is turned on i put the eter leads on the outer 2 legs of the diode and get a reading of -.68 and the channels work the other diodes theres no reading at all just 000 wondering what could cause this if i put the posistie and negative diodes in wrong spots wouldnt this cause major problems when powerd up
  Reply With Quote
Old 11th November 2008, 03:09 PM   #5
diyAudio Member
 
Join Date: Sep 2006
im thinking 1 of the torriods is shorted when i put my meter on one of the torriod legs and to the irfz44e i get 0 ohms to the middle leg and the gate leg also wondering if this is where my problem might be all other torriods when put on the same leg and to the gate of the irfz44e's i dont get a 000 ohm reading
  Reply With Quote
Old 11th November 2008, 03:23 PM   #6
diyAudio Member
 
Join Date: Sep 2006
ok you guys are probably are gonna think im an idiot which i probably hae to agree i was in a hurry putting this thing back together i was looking at the amp somemore trying to see where the problem is. I put in the mpsa 56 and the 06's in wrong i put the 06's where the 56's go and so on i took them back out and gonna check them to see if they are still good and then put them back in the right order maybe this will solve the prob
  Reply With Quote
Old 11th November 2008, 03:43 PM   #7
diyAudio Member
 
Join Date: Dec 2005
Location: Northern California
Cool, you figured it out, I hope.... Don't feel bad we all are just human after all....
  Reply With Quote
Old 11th November 2008, 04:03 PM   #8
diyAudio Member
 
Join Date: Sep 2006
ok i put the back in the correct order but i still have a problem when powerd up the outputs get very hot within a few seconds i checked the all and they test fine wondering now where do i go from here what do i check any help would grealt be appericated and thanks for all your help without u guys id be stupid at even uessing where to start
  Reply With Quote
Old 12th November 2008, 03:38 AM   #9
diyAudio Member
 
Join Date: Dec 2005
Location: Northern California
Mike Pm me about this ADS amp. I will do my best to get you back om track. Then we can post up more here on the open forum...
  Reply With Quote
Old 12th November 2008, 04:20 AM   #10
diyAudio Moderator Emeritus
 
Iain McNeill's Avatar
 
Join Date: Oct 2007
Location: Santa Cruz, California
punctuation is your friend
please help - I find it hard to understand your posts
  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
Diode Question betelgeuse Parts 4 14th December 2008 10:40 PM
PSU/Diode question iceman Chip Amps 11 27th March 2005 01:29 PM
Diode Question TunaFish Tubes / Valves 8 13th October 2003 11:53 AM
Diode PIV question ? thylantyr Solid State 5 28th May 2003 09:08 PM
Diode question Holger Barske Solid State 2 14th October 2002 02:44 PM


New To Site? Need Help?

All times are GMT. The time now is 08:59 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