Need Schematics for repair - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 25th April 2013, 04:51 AM   #1
crissty is offline crissty  Greenland
diyAudio Member
 
Join Date: May 2005
Location: Greenland
Default Need Schematics for repair

Pls help, as i need Schematics of NX Audio Z7 Amplifier (6000W) urgently. as i have two amp down, to be repaired asap.

Thanks.
  Reply With Quote
Old 28th April 2013, 10:35 AM   #2
crissty is offline crissty  Greenland
diyAudio Member
 
Join Date: May 2005
Location: Greenland
Default ????

Pls, Is there anybody who can help me with the schematics ??????
  Reply With Quote
Old 28th April 2013, 10:59 AM   #3
diyAudio Member
 
Join Date: May 2005
Location: toronto
Change the title of your thread or start a new one with the name of the amp in thread title because no- one can tell what you want.
  Reply With Quote
Old 28th April 2013, 01:25 PM   #4
JMFahey is offline JMFahey  Argentina
diyAudio Member
 
JMFahey's Avatar
 
Join Date: Mar 2009
Location: Buenos Aires - Argentina
Sorry but they are not meant to be repaired at the component level, but by replacing modules, which can be bought straight from the Factory.
Same as in, say, PCs, where you don't grab your Digital Scope to repair a Video Board but just replace it.
Delights of automated factories: it's cheaper to build a new one than to repair the old one.
Sorry.
NX Audio
  Reply With Quote
Old 10th May 2013, 08:41 PM   #5
crissty is offline crissty  Greenland
diyAudio Member
 
Join Date: May 2005
Location: Greenland
Nobody out there who has the schematics, just need Amp and preamp circuit, cause the amp starts and shows all leds on, then goes to red led (Protect mode). no ouput transistors blown, some minor problem might be there, but need schematics to properly locate the problem.
  Reply With Quote
Old 10th May 2013, 11:48 PM   #6
diyAudio Member
 
Triodethom's Avatar
 
Join Date: Dec 2009
Location: Newnan GA
Hope you can supply that amp 34 amps at 240volts ac for as long as you want to drive it at full output .
  Reply With Quote
Old 11th May 2013, 12:01 AM   #7
JMFahey is offline JMFahey  Argentina
diyAudio Member
 
JMFahey's Avatar
 
Join Date: Mar 2009
Location: Buenos Aires - Argentina
Quote:
Originally Posted by crissty View Post
Nobody out there who has the schematics, just need Amp and preamp circuit, cause the amp starts and shows all leds on, then goes to red led (Protect mode). no ouput transistors blown, some minor problem might be there, but need schematics to properly locate the problem.
Agree, but a minor problem there is, say, an unplugged connector, a missing fuse, an improperly set switch, a cold solder in some component.

*If* you need to dig into it, at component level, it's not a minor problem any more.
  Reply With Quote
Old 11th May 2013, 12:29 AM   #8
Enzo is offline Enzo  United States
diyAudio Member
 
Join Date: Sep 2004
Location: Lansing, Michigan
If I faced this situation, I would first check the power supplies. I assume the power section use some higher voltage, both polarities. I don't know this amp, never heard the name, but as a high power amp it may have commutating power supplies. For example +/-35v and +/-100v, or something like that. It should be easy to find the power supplies. And your preamps likely run on +/-15vDC, so check if those are both up to voltage and clean.

As an example, in a mixer, if I see all the peak lights on in the absence of signal, I can usually assume one of the 15v rails is gone. SO a collapsed or failing 15v rail in your amp could do the same here.

Amp is in protect, is there a speaker relay? You may not have shorted output transistors, but that doesn't mean they are not being turned on the wrong way. SO if there is a relay, look on the amp side of it and see if there is a large DC offset on the output bus before the relay. That won't tell you WHY, but it will tello you what you are up against.

If you can determine that one channel has the problem but is putting the entire amp into protect, that may leave the good channel to use as reference. Is there a board per channel or is it one large board for both?

My anti-virus won;t let me open the NX page.
  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
Pioneer SX-1250/SX-5590 schematics for repair ComputerJLT Solid State 2 28th July 2011 01:51 AM
Alpine mrd-m1005 schematics for repair Mr.Monkeys Car Audio 3 8th April 2011 09:01 PM
Denon DCC9770 schematics or repair guidance bruneti Car Audio 7 16th October 2007 11:34 PM
BOSE Schematics DENSO Schematics packer Car Audio 6 25th June 2007 10:55 AM
looking for repair schematics for a Kenwood KAC-Q74 jude Solid State 0 1st August 2002 07:59 PM


New To Site? Need Help?

All times are GMT. The time now is 08:55 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