Hifonics Zeus zrx-3000.1d Help!!! - Page 4 - 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 31st January 2013, 02:24 AM   #31
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Measure the DC voltage on the RCA shields (black probe on the amp ground, red on RCA shields). Do this with the amp on and off. Does the voltage vary on or off?

Does the hum change when you measure the shield voltage with the amp on?
  Reply With Quote
Old 1st February 2013, 03:04 AM   #32
diyAudio Member
 
Join Date: Nov 2012
Hello Perry. I measured the DC voltage on the RCA shields. With the amp on it reads .003V & with the amp off it reads 0V. No, the hum\distortion doesn't change when I measure the shield voltage. I'm going to try and record a video and post a link so you can see & hear exactly what it sounds like.
  Reply With Quote
Old 1st February 2013, 03:05 AM   #33
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I don't have the patience for videos so I probably won't watch it.
  Reply With Quote
Old 1st February 2013, 03:17 AM   #34
diyAudio Member
 
Join Date: Nov 2012
Ok. I have question. Remember earlier in the thread when I stated that my power supply voltage was dragged down to .203V. I just noticed that now, its dragged down to 9V & that's with remote voltage applied. Without remote voltage applied, it pulls 12V volts. Could this be the reason for the hum/distortion cause the amp isn't operating on 9V instead of 12V? I'm using a Hewlard Packard dual 24V, 4A DC power supply with displays DC and Amps.
  Reply With Quote
Old 1st February 2013, 03:32 AM   #35
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
You need a supply capable of more current. It may not be the problem but it's not helping. Do you have another power supply?
  Reply With Quote
Old 1st February 2013, 03:44 AM   #36
diyAudio Member
 
Join Date: Nov 2012
No sir. I'm going to Fry's to purchase one tomorrow. Another thing i just noticed. I have 2 screws that secures the amp to the housing and just out of curiosity, I unscrewed both of them and now the amp is pulling 12V from the DC power supply. How strange. Were so close to getting this amp fixed. The distortion is the only problem that's left.
  Reply With Quote
Old 1st February 2013, 04:14 AM   #37
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I think your terminology is a bit off. The amp doesn't pull 12v. The power supply produces the 12v. The amp is connected to the supply and draws current from the supply.

After you buy the supply, post a link to information about it, or better yet, post a link before you buy it.
  Reply With Quote
Old 15th February 2013, 08:47 PM   #38
diyAudio Member
 
Join Date: Nov 2012
Hello Perry. I'm back. The power supply I purchased from Amazon.com is the
Pyramid PS-21KX 20 Amp, 13.8VDC fully regulated power supply. Here is the link.
Amazon.com: Pyramid PS21KX 20 Amp Power Supply: Car Electronics

Update on amplifier. I measured the voltage on all 3 legs of 2 voltage regulators(L7812,L7912) near the audio driver board and each measured around (+\-)64V, which is close to the rail voltage of 69V. I removed both regulators from the circuit and tested them with my power supply & they test good with an output of (+\-)12V. I have 0V across the 2 transformers in front of the audio driver board and 0V across the green capacitor(250V 10UF) near the transformers. Thanks.
  Reply With Quote
Old 16th February 2013, 05:31 AM   #39
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
What is the circuit board designation for the regulators?

How did you connect the regulators when you connected them to the r12v power supply?

The two toroidal components near the audio driver board are inductors, not transformers.
  Reply With Quote
Old 19th February 2013, 12:57 AM   #40
diyAudio Member
 
Join Date: Nov 2012
Hello Perry. The circuit board designation for the regulators are L7812 & L7912. When I tested the regulators out of circuit, I tested both at (+/-)18V. On L7812(positive regulator) I connected the positive lead from the power supply to the input(outer left leg) and the negative lead to ground(middle leg) and measured the voltage of the output(outer right leg). The result was +12.1V. On L7912(negative regulator), the outer left leg is ground & the middle leg is the input. I reversed the leads on the power supply to run a negative voltage through the regulator and the result was -12V. So, even though they tested good, I decided to replace them with new ones and I'm still getting the rail voltage (-/+)64V across both of these. The data sheets show the max voltage input for both regulators are (-+)27V. Thanks.
  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 zeus vii mike49504 Car Audio 6 30th April 2012 05:31 PM
hifonics hifi1000.1d ian33 Car Audio 29 13th April 2012 03:37 AM
Hifonics GEN X Zeus mike49504 Car Audio 18 18th June 2011 06:31 PM
Hifonics Zeus Gen X Dr Zeus Car Audio 19 7th January 2011 02:25 AM
Hifonics zeus gen x mike49504 Car Audio 93 20th April 2010 11:20 PM


New To Site? Need Help?

All times are GMT. The time now is 09:21 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