Go Back   Home > Forums > >

kicker zx1500.1 output inductor?
kicker zx1500.1 output inductor?
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
Old 31st July 2011, 07:06 PM   #1
shane300zx is offline shane300zx  United States
diyAudio Member
 
Join Date: Jul 2011
Default kicker zx1500.1 output inductor?

Just repaired a zx1500.1 the irf3205's were blown and one 820uf 160v cap poped. Ordered new 3205's and pulled the bad cap for some testing and have 2.55 amps idle current but the problem is i hear a slight ringing in the output and the large output inductor is getting quite warm. Im kinda limited on my testing tools but do have a dvm. I played the amp at low power on 2 15"'s @4 ohm load and it got quite warm. on the terminals of the removed cap i measured 106vac.

Ant help guys half the battle is won it powers up and plays!
  Reply With Quote
Old 31st July 2011, 08:36 PM   #2
shane300zx is offline shane300zx  United States
diyAudio Member
 
Join Date: Jul 2011
Tested the power supply gate resistors they come up all as 98.6 ohms. Im getting what sounds like an tube type am radio sound when i hold the test speaker close to my ear. Under power with a 6ohm load i get 100.6vac output.
  Reply With Quote
Old 31st July 2011, 10:05 PM   #3
mike49504 is offline mike49504  United States
diyAudio Member
 
Join Date: Sep 2006
Did you replace the power supply drivers?? (drivers for the 3205's)

In theese amps its normal for the output filter inductor to get warm..
  Reply With Quote
Old 1st August 2011, 02:08 AM   #4
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Did the power supply side of the amp heat up quicker than the output transistors side of the amp when you ran it on the 15s?

If the noise wasn't clearly audible through the 15s, I wouldn't be concerned about it. If this amp doesn't have the oscillators synchronized between the power supply and audio sections, the noise may be normal.
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply With Quote
Old 1st August 2011, 03:41 AM   #5
shane300zx is offline shane300zx  United States
diyAudio Member
 
Join Date: Jul 2011
Mike im not too sure about the power supply drivers or even where to locate them at. The heat sinks never get warm but like i said i dont have the last power supply cap in so i have not been beating on the amp. The only thing that gets warm is the large output inductor even at idle with no load hoked up to it. On a side note in you look at this link http://www.bcae1.com/temp/zx1500components.swf the fets to the left of the outputs i touched the case with the amp out of the case and got a nice shock!
  Reply With Quote
Old 1st August 2011, 04:08 AM   #6
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Those aren't FETs. They're rectifiers. You may not have any real problems with the amp. If the heatsink doesnt get warm, the power supply FETs are likely being driven properly.

Is the board discolored around the inductor?

Can you still hold you hand on the inductor after the amp has idled for about 15 minutes.
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply With Quote
Old 1st August 2011, 06:31 AM   #7
shane300zx is offline shane300zx  United States
diyAudio Member
 
Join Date: Jul 2011
Ill have to test it i should be getting a cap tomorrow and puting it in. There is no discoloration around the inductor. Ill report back tomorow with results and should i have speakers hooked up to the amp without signal for idle testing?
  Reply With Quote
Old 1st August 2011, 07:15 AM   #8
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Speakers won't (shouldn't) make a difference. Only connect power/ground/remote.
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply With Quote
Old 2nd August 2011, 06:35 AM   #9
shane300zx is offline shane300zx  United States
diyAudio Member
 
Join Date: Jul 2011
So called around to local repair shops no luck on the cap. But fired it back up and after 15 mins of idle time i could only rest my fingers on the inductor about 5 seconds before it was too hot. Idle current remained at 2.33 amps. Had it at idle for around 45 mins and it was hot enough to not even think about touching it.
  Reply With Quote
Old 2nd August 2011, 09:58 AM   #10
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I don't know what the idle current should be but since it didn't increase and none of the FETs get hot, the amp may be OK. The inductor can take a lot of heat. If you want it to run a bit cooler, install some thermal gap pad between the inductor and the cover of the amp.
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply to this post

Reply


kicker zx1500.1 output inductor?Hide this!Advertise here!
Thread Tools

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Source for output air cor output inductor?? sam9 Solid State 12 2nd July 2015 08:44 AM
Kicker zx1500.1 not working Andrew123654 Car Audio 12 19th October 2010 01:04 PM
why use output caps when you can use an inductor? cuibono Parts 4 6th February 2008 11:56 PM
kicker 352xi resistors across output burned, what resistance? ppia600 Car Audio 2 19th August 2007 03:45 AM
output inductor in ta2020 garbage Class D 8 9th September 2005 02:20 AM


New To Site? Need Help?

All times are GMT. The time now is 08:45 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki