Hifonics XX Hercules - 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 28th September 2012, 12:37 AM   #11
diyAudio Member
 
Join Date: Sep 2009
Location: Wisconsin
That zener can't be found, at least by me.
Click the image to open in full size.
__________________
BK 1544 40Mhz scope.....Pyramid PS-26KX supply.....Tenma 72-380 Func. Generator
  Reply With Quote
Old 28th September 2012, 01:10 AM   #12
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Email me. I have a similar diagram that may be closer to what you have. If we can get an exact match, it will make things easier.
babin_perry@yahoo.com
  Reply With Quote
Old 3rd October 2012, 01:22 AM   #13
diyAudio Member
 
Join Date: Sep 2009
Location: Wisconsin
Here is the output with 40hz coming in. No excessive current at all.

Click the image to open in full size.
__________________
BK 1544 40Mhz scope.....Pyramid PS-26KX supply.....Tenma 72-380 Func. Generator
  Reply With Quote
Old 3rd October 2012, 04:36 AM   #14
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Did you get the supply working correctly?

Was the diagram closer to the board you have?
  Reply With Quote
Old 3rd October 2012, 10:24 AM   #15
diyAudio Member
 
Join Date: Sep 2009
Location: Wisconsin
Supply is operational, diagram is much closer.

I don't see oscillation like I should, maybe an open feedback loop?
__________________
BK 1544 40Mhz scope.....Pyramid PS-26KX supply.....Tenma 72-380 Func. Generator
  Reply With Quote
Old 3rd October 2012, 11:15 AM   #16
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Is D6 still out of the circuit?
  Reply With Quote
Old 3rd October 2012, 11:24 AM   #17
diyAudio Member
 
Join Date: Sep 2009
Location: Wisconsin
Everything is in place as it should be.
__________________
BK 1544 40Mhz scope.....Pyramid PS-26KX supply.....Tenma 72-380 Func. Generator
  Reply With Quote
Old 5th October 2012, 02:16 AM   #18
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I don't know. This is why I hate self-oscillating amplifiers. Any break or defective circuit can cause the output stage to fail to oscillate. Without a schematic diagram for the driver board, you're likely going to have to check every component.

Did you confirm that you have 12v across the 12v zeners on the driver board?
  Reply With Quote
Old 16th October 2012, 01:20 AM   #19
diyAudio Member
 
Join Date: Sep 2009
Location: Wisconsin
Zener voltage is good.

Pin1 of U2 is not the correct frequency and it doesn't look like a triangle waveform like the American Bass amp I have with the same driver board. I compared both with no input signal.
__________________
BK 1544 40Mhz scope.....Pyramid PS-26KX supply.....Tenma 72-380 Func. Generator
  Reply With Quote
Old 16th October 2012, 09:26 AM   #20
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I've emailed you another diagram. Check the voltages on the audio driver board.
  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
Hifonics XX Chaos mike49504 Car Audio 1 3rd September 2011 05:08 AM
Hifonics XX Chaos mike49504 Car Audio 35 23rd July 2011 06:06 AM
Hifonics Hercules VII mike49504 Car Audio 1 10th June 2011 04:41 PM
Hifonics hercules xi mike49504 Car Audio 12 9th January 2010 06:59 PM
hifonics colossus xx mike49504 Car Audio 7 28th November 2008 11:15 PM


New To Site? Need Help?

All times are GMT. The time now is 11:57 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