Power Acoustic OV1-5500D - 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 3rd November 2013, 10:13 AM   #1
diyAudio Member
 
Join Date: Jun 2012
Default Power Acoustic OV1-5500D

This amp is the same design that many amp manufactors use..

This is the board where the Audio driverboard sits in front of a fan..


Amp powers up idels perfectly all rail and regualted voltages are correct..


Amp has very very low output u have to put your ear to the test spaeker in order to hear it..

Any ideas what might cause this??
  Reply With Quote
Old 3rd November 2013, 03:06 PM   #2
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
master/slave switch not set to master?

If that's not it, do you have rail-rail oscillation on the output transistors?
  Reply With Quote
Old 4th November 2013, 05:04 AM   #3
diyAudio Member
 
Join Date: Jun 2012
Switch was set to master..

I have rail to rail oscillation on the outputs.. Nice sqaure wave
  Reply With Quote
Old 4th November 2013, 06:10 AM   #4
diyAudio Member
 
Join Date: Jun 2012
Ok i noticed the Vias is damaged on the pads for the audio driverboard i will fix the connections from the top of the board to the bottom of the board ..

I will post back once i fix this
  Reply With Quote
Old 4th November 2013, 02:42 PM   #5
diyAudio Member
 
Join Date: Jun 2012
Ok fixed that now i have another issue..

A screwdrive rolled across my bench and hit 1 of the outputs when that amp was powerd up..

had a big spark but it didnt blow the output ..

I removed the output and powerd the amp up again now it stuck in protection mode..

If i remove all the low side outputs amp will power up and idle fine..

I tryed to put 1 brand new output on the low side but as soon as i do the amp protects..

Would the driverboard be the most likely cause of this??
  Reply With Quote
Old 13th November 2013, 04:41 AM   #6
diyAudio Member
 
Join Date: Jun 2012
Any ideas what might cause this amp to protect when the audio driverboard is in the amp???

As soon as i removed it the amp powers up and idles fine
  Reply With Quote
Old 13th November 2013, 04:46 AM   #7
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Do you see a pulse of DC on the positive speaker terminal when the amp is powered up with the outputs and driver board in the circuit?

If so, is the pulse positive or negative?
  Reply With Quote
Old 13th November 2013, 04:55 AM   #8
diyAudio Member
 
Join Date: Jun 2012
Yes I get a pulse of -18.33 volts
  Reply With Quote
Old 13th November 2013, 05:35 AM   #9
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Q124 and Q125 would be the most likely suspects. Those drive the low-side FETs on. Q126 and Q127 may be damaged as well. Check for leakage as well as shorts and opens.
  Reply With Quote
Old 13th November 2013, 06:50 AM   #10
diyAudio Member
 
Join Date: Jun 2012
Ok the problem is with the + 15 volts ..

The regulator is working correctly..

If i power the amp up it will flash in and out of protection..

If i remove the 7815 regulator the amp will power up normally
  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
Power Acoustic OV1-5500D S Merlington Car Audio 7 23rd October 2012 01:29 PM
Power Acoustic OVN1-5500D S Merlington Car Audio 3 26th August 2012 07:35 PM
Power Acoustic OVN1-5500D mike49504 Car Audio 14 29th February 2012 11:25 AM
power acoustik ps1-5500d bdgf2004 Car Audio 7 14th September 2011 05:16 PM
Power Akustic LFA1-5500D Simbalage21 Car Audio 4 29th April 2010 10:39 PM


New To Site? Need Help?

All times are GMT. The time now is 05:53 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