Earthquake PH2000 - Page 3 - 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 20th December 2012, 09:08 PM   #21
diyAudio Member
 
Join Date: Jun 2012
How do i test to see if the opto-coupler is being driver to bias or if its not being driven on??
  Reply With Quote
Old 20th December 2012, 09:16 PM   #22
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Measure the DC voltage across pins 1 and 2 from the time that remote is applied and for about another 10 seconds. It should go from about 0v to about 1.2v DC.
  Reply With Quote
Old 20th December 2012, 09:31 PM   #23
diyAudio Member
 
Join Date: Jun 2012
There are 2 Opto -couplers in this amp 1 of them goes from 0 to 1.01 volts


The other 1 stays at -0.46 volts across pins 1 and 2
  Reply With Quote
Old 20th December 2012, 09:53 PM   #24
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
For the one that goes from 0 to 1v, measure the voltage on the other side of it. Does it go from about 70v to about 0v?
  Reply With Quote
Old 20th December 2012, 11:14 PM   #25
diyAudio Member
 
Join Date: Jun 2012
It goes from 60.5 volts to 0 volts
  Reply With Quote
Old 20th December 2012, 11:22 PM   #26
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
You should see oscillation on the output transistors when that switches to 0v. Do you see oscillation on the outputs?

Do you see any DC offset after it switches?
  Reply With Quote
Old 20th December 2012, 11:32 PM   #27
diyAudio Member
 
Join Date: Jun 2012
The DC offset goes from 2.22 volts when powerd up to 0 volts when it switches..


Yes i see oscillation on the outputs
  Reply With Quote
Old 20th December 2012, 11:37 PM   #28
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Are you getting a preamp level signal to the amplifier section of the amp?

Did you compare it to the sony XM-D400P5?
  Reply With Quote
Old 20th December 2012, 11:50 PM   #29
diyAudio Member
 
Join Date: Jun 2012
I dont have the service manual for the sony..


The audio is not reaching the Amplifier section of this amp
  Reply With Quote
Old 21st December 2012, 12:16 AM   #30
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
email me
babin_perry@yahoo.com
  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
Earthquake PH2000 mike49504 Car Audio 11 27th February 2014 04:33 PM
Earthquake PH2000 mike49504 Car Audio 21 4th May 2012 04:50 AM
Earthquake subwoofers ?? Moondog55 Subwoofers 0 11th August 2009 06:19 AM
Earthquake UHC2020 Puggie Car Audio 0 2nd August 2006 09:09 AM
-:- Earthquake -:- audioPT Subwoofers 3 30th October 2004 01:02 PM


New To Site? Need Help?

All times are GMT. The time now is 12:08 PM.


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