Please help - Xtant 1001DX with power but no output - 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 29th August 2005, 07:10 PM   #1
diyAudio Member
 
Join Date: Aug 2005
Default Please help - Xtant 1001DX with power but no output

I purchased a used untested Xtant 1001DX for a very good price. Before testing it, I visually inspected the board and all of its components, and no components appear to be outwardly damaged (including the transitors behind the heat sink, and the surface mount components on the underside of the board). After testing it on my test bench, I did get it to power on, but get no output to the speakers. Here are the specifics:

When it powers on, the blue led (believe that it's for low voltage) lights momentarily, then goes out. There is a pause for a second or two, then the normal power (red) led lights and stays lit. Even after adjusting the input gain to both extremes, there is still no output (not even faint).

Also, on the front edge of the main board, in front of the speaker connections, there are contacts on each side of the main board for what I am assuming is plugging in modules. Here's a picture:

Click the image to open in full size.

Are there supposed to be wire jumper soldered there? Is that factory done? On the other side of the main board, the same contacts are jumpered in the same manner.

Also, the jumper section P4, which is the Balanced Line Module connection, had two sets of jumpers block attached. Here is a pic:

Click the image to open in full size.

Is that normal? From what I remember, removing those didn't make a difference. I was worried that if those jumpers shouldn't be there, that maybe someone removed a module and stuck those jumpers on there, possibly shorting out something in the line input section.

After reading through other posts about this and other Xtant amp repairs, I believe I have explained the most obvious of the symptoms. I have a DMM and any tools that I might need to repair the amp (minus an oscilloscope). Without any outwardly burnt parts and the amp powering up, I'm not sure which section that I should start with to test.

If anyone has experience with repairing this amp, and could point me in the right direction for which section I should start with, it be great appreciated.
  Reply With Quote
Old 29th August 2005, 11:24 PM   #2
diyAudio Member
 
xplod1236's Avatar
 
Join Date: Dec 2003
Location: On the couch
Send a message via AIM to xplod1236
Quote:
When it powers on, the blue led (believe that it's for low voltage) lights momentarily, then goes out. There is a pause for a second or two, then the normal power (red) led lights and stays lit.
I'm pretty sure that the blue led is the power light, and the red one is a protection light.
  Reply With Quote
Old 30th August 2005, 07:54 AM   #3
diyAudio Member
 
Join Date: Aug 2005
Send a message via MSN to Safe_Cracker
Not with the DX, red=power, blue=undercurrent, orange=thermal protection and yellow=overcurrent. http://www.xtant.com/html/techSuppor.../1001dxMan.pdf
__________________
Safe_Cracker :O)~
  Reply With Quote
Old 30th August 2005, 07:54 AM   #4
diyAudio Member
 
Join Date: Aug 2005
According to the owner's manual and install sheet off of Xtant's website, the red LED is the normal power light, the blue LED is the low voltage light, the yellow LED is the low impedance light, and the orange LED is the thermal protect light.

Also, I just saw something that I had previously missed. The jumpers need to be installed one the Balanced Line Module connection, so I just answered one of my own questions.
  Reply With Quote
Old 30th August 2005, 07:54 AM   #5
diyAudio Member
 
Join Date: Aug 2005
Default Re: Please help - Xtant 1001DX with power but no output

Quote:
Originally posted by Supatech
The jumper section P4, which is the Balanced Line Module connection, had two sets of jumpers block attached. Here is a pic:

Click the image to open in full size.

Is that normal? From what I remember, removing those didn't make a difference. I was worried that if those jumpers shouldn't be there, that maybe someone removed a module and stuck those jumpers on there, possibly shorting out something in the line input section.
I just fixed the no output problem. I quoted what I was one of my questions. The jumper section P4 is the Balanced Line Module connection, and has two sets of jumpers block attached. Just above that, there is another jumper section for plugging in an EQ module. It didn't have the two sets of jumpers. According to the installation sheet on Xtant's website for this amplifier, if a module is not installed the jumpers need to be installed in its place.

FYI for anyone else that buys a used Xtant amp. Get the install sheet and the owners manual off of Xtant's website. It shows exactly which jumpers need to be connected for normal operation.

I got a great deal for $160 shipped, and they're selling for around $300 on eBay.
  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
xtant 1001d low power Bgun Car Audio 0 22nd November 2006 05:50 AM
Fs:Xtant X1001, Lots Of Power! shallowfu Swap Meet 0 17th September 2006 08:01 AM
Xtant 1001dx For Sale! shallowfu Swap Meet 1 5th September 2006 05:20 PM
Xtant 1001DX Output transistors needed Stooo Car Audio 17 20th October 2004 02:33 AM
power output calculations, rated power and required power output metebalci Tubes / Valves 7 22nd February 2004 05:49 PM


New To Site? Need Help?

All times are GMT. The time now is 05:32 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