Diablo Audio - 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 16th October 2012, 11:40 AM   #21
diyAudio Member
 
Join Date: Oct 2010
Where was your negative probe when you took these readings?
  Reply With Quote
Old 18th October 2012, 08:27 PM   #22
diyAudio Member
 
Join Date: Mar 2012
Location: Oklahoma
neg batt terminal on amp
  Reply With Quote
Old 18th October 2012, 08:40 PM   #23
diyAudio Member
 
Join Date: Oct 2010
Perry is right, that IC isn't getting enough power. When you power up the amp, what is the current draw of the amp? (I'm curious if you have something drawing more than your power supply can put out, hence the low voltage on that IC)
  Reply With Quote
Old 19th October 2012, 02:04 PM   #24
diyAudio Member
 
Join Date: Mar 2012
Location: Oklahoma
. 0025 amps at no remote, after applying remote 0.176amps. source voltage is 14.6 volts. LOL Thanks for your attention to detail there blazer. And i am laughing at the situation.(mine). You would laugh too. I am not your average tech. My learning process is different than most.
  Reply With Quote
Old 19th October 2012, 03:33 PM   #25
diyAudio Member
 
Join Date: Oct 2010
Good, at least we don't have a short that is drawing the supply down. Pin 12 of that 494 IC is power for the chip, trace it back (to usually the remote) and find out what is preventing power from getting to pin 12. I usually find there's a blown transistor holding up things....
  Reply With Quote
Old 19th October 2012, 07:32 PM   #26
diyAudio Member
 
Join Date: Mar 2012
Location: Oklahoma
What are the components that I have in the yellow squares?
Attached Images
File Type: jpg 2012-10-19_14-08-25_119.jpg (441.5 KB, 53 views)
File Type: jpg 2012-10-19_14-07-24_425.jpg (776.0 KB, 48 views)
  Reply With Quote
Old 19th October 2012, 10:42 PM   #27
diyAudio Member
 
Join Date: Oct 2010
The bigger items on the heatsinks, I don't know, what are the markings on the front of them? The two smaller items are resistors, looks like they got hot. You'll want to verify their resistance because they have burned some. (I can't quite tell their value from the pics)
  Reply With Quote
Old 20th October 2012, 01:41 AM   #28
diyAudio Member
 
Join Date: Mar 2012
Location: Oklahoma
i cant make out the colors on two. there is actualy four that are burnt.
  Reply With Quote
Old 20th October 2012, 12:42 PM   #29
diyAudio Member
 
Join Date: Sep 2009
Location: Wisconsin
The one with the brown band is 10ohm and the other is 4.7ohm I believe. Yellow, violet, gold, gold

What was the failure mode of this amp, over voltage?
__________________
BK 1544 40Mhz scope.....Pyramid PS-26KX supply.....Tenma 72-380 Func. Generator
  Reply With Quote
Old 20th October 2012, 02:31 PM   #30
diyAudio Member
 
Join Date: Mar 2012
Location: Oklahoma
completely dead.
  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
el cheapo diablo t line unsimmed experiment mondogenerator Full Range 13 3rd June 2012 03:34 PM
Diablo 2500.1 output driver card brandes.cm Car Audio 6 14th May 2012 12:44 AM
Blown Diablo Prototype Repair DIY help please Drsnazzy Car Audio 8 15th December 2011 08:05 PM
Good books or videos on audio production, audio engineering, or audio editing tunks14 Everything Else 0 15th April 2011 10:00 PM
Help w/ Diablo 5000 amp Tom7227 Class D 0 27th December 2009 08:15 PM


New To Site? Need Help?

All times are GMT. The time now is 02:42 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