KICKER KX600.4 - 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 25th January 2011, 10:48 PM   #1
diyAudio Member
 
Join Date: Oct 2010
Default KICKER KX600.4

i got this amp the other day with 1 bad channel, the outputs (TIP35/35) were shorted between all 3 legs. i checked the drivers (TIP41/42) out of the circuit and they seem okay, the emitter resistors are within tolerance, and the base is getting 38v/-34v. i replaced the outputs and powered it up, now all 4 channels are kind of tappered down on the top half of the output. if i turn it up into clipping the top half will start distorting. i was just wandering if i should look further into this channel or something that all four channel have in common.

the pic is before clipping.
Attached Images
File Type: jpg kicker output .jpg (45.9 KB, 78 views)
  Reply With Quote
Old 25th January 2011, 10:52 PM   #2
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Can you post a photo of the board?
  Reply With Quote
Old 26th January 2011, 12:02 AM   #3
diyAudio Member
 
Join Date: Oct 2010
pic
Attached Images
File Type: jpg kicker kx600.4.jpg (147.1 KB, 76 views)
  Reply With Quote
Old 26th January 2011, 12:29 AM   #4
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Both +/- regulated voltage on all of the op-amps?

Clean signal coming off of the preamp board?

DC voltage on the base of Q149 and Q150? Place the black probe on the emitter of the transistor on which you're measuring the voltage (red probe on base). I'm assuming that this is like the 800.4. These transistors would be near the outputs and there would be a pair for each channel (249, 250...). The Qx50 transistors would likely be near large green film caps. Both should be C945s.
  Reply With Quote
Old 26th January 2011, 12:52 PM   #5
Dr Zeus is offline Dr Zeus  United States
diyAudio Member
 
Dr Zeus's Avatar
 
Join Date: Oct 2010
Does it clip like that with no load from a test speaker? Leave the RCAs connected providing signal and remove the test speaker/load. I've seen this on amps with failing driver circuitry where the signal looks OK without load, but with a test speaker attached the output will crumble.
  Reply With Quote
Old 27th January 2011, 10:27 PM   #6
diyAudio Member
 
Join Date: Oct 2010
well i got readings from all the Qx50's and they were all at 0.225v from e-b. then i got a phone call and when i came back the amp was off and now it wont come back on. pins 8 & 11 have 1.4v and pin 12 has 0v on the tl494. i never noticed any parts getting hot especially the power supply fets or the outputs. i was out of the room for about 1-2 minutes and now i regret it.
  Reply With Quote
Old 27th January 2011, 10:30 PM   #7
diyAudio Member
 
Join Date: Oct 2010
Quote:
Originally Posted by Dr Zeus View Post
Does it clip like that with no load from a test speaker? Leave the RCAs connected providing signal and remove the test speaker/load. I've seen this on amps with failing driver circuitry where the signal looks OK without load, but with a test speaker attached the output will crumble.
that was with no load. i haven't even tried with a load yet.
  Reply With Quote
Old 5th February 2011, 02:43 PM   #8
diyAudio Member
 
Join Date: Oct 2010
if i removed the power supply rectifiers would that isolate the problem to either the power supply or the audio side of the amp. it was powering up fine but all the sudden it turned off and now i'm kind of lost. i know the TLx94 is not getting 12 volts but could it be something related to my previous problem (distorted output) which i believe is more probable or maybe something in the remote circiut?
  Reply With Quote
Old 5th February 2011, 03:13 PM   #9
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Is there a Q6? Possibly a 2SB649?

If so, post the voltage on all three legs.
  Reply With Quote
Old 5th February 2011, 03:37 PM   #10
diyAudio Member
 
Join Date: Oct 2010
with my black probe on ground i got:
E-13.98
C-1.443
B-1.442
  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
Kicker KX600.4 protection light stacycoonrod Car Audio 1 15th August 2010 09:15 PM
kicker kx450.2 timwebb Car Audio 21 1st July 2010 03:52 AM
Kicker KX600.4 repair intensem1rider Car Audio 18 8th February 2008 12:28 AM
schematic needed: '04 Kicker kx600.1 carguyjosh Class D 2 24th July 2007 06:54 PM
adire? kicker? anybody? jadenlinkletter Car Audio 5 22nd April 2005 01:37 PM


New To Site? Need Help?

All times are GMT. The time now is 10:04 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