Lanzar D3000M Schematics

mr24play · 9th July 2007, 02:33 AM

I know this is a longshot, but can anyone help me source the schematics for this amp. IT's probably not a great amp to most people, but I really would like to fix this one .

mr24play · 20th July 2007, 01:03 PM

Here are pics of my amp
(12) IRFZ44N
(8) IRF2807

After reading other posts regarding fets and realizing I need to shotgun both the power supply and output section.
I wanted to know if you guys have any suggestions on better quality replacement parts.

The controller is a KIA494AP.

I honestly was hoping to sub a higher current mosfet in both sides.

oh, how about the drivers, should i order them now and get it over with ? or wait until i test the PS side.

Sorry I don't have any numbers yet, I'll do that this weekend, I was praying i could find the schematics, but that doesn't seem likely at this point.

Perry Babin · 21st July 2007, 11:08 PM

Did you find any shorted output transistors?

mr24play · 22nd July 2007, 01:49 AM

I wasnt going to look for any shorted ones, just replace them all.
But before I ordered them I was hoping to see if there were any recommendations on better parts.

Perry Babin · 22nd July 2007, 02:00 AM

It's not a good idea to replace components that aren't known to be defective. This is especially true for class D amplifiers. I've seen more than one that would not work properly when the original part number was used as a replacement. The manufacturers of semiconductors change the way they make the components and that can change some of the parameters. The HIP4080 based amps are especially sensitive to changes.

The power supply FETs look like they've failed so they need to be replaced. The driver transistors may have failed. You can check the drive signal with a voltmeter. With the power supply FETs pulled, the DC voltage on pin 1 should be ~1/2 of the B+ voltage (red meter lead on pin 1, black meter lead on pin 3 or on the ground terminal of the amp). Check the drive voltage for all of the power supply FETs.

Check all of the gate resistors to make sure all are within tolerance.

mr24play · 22nd July 2007, 02:08 AM

Thanks Perry, Will do.

9th July 2007, 02:33 AM	#1
mr24play diyAudio Member Join Date: Feb 2005 Location: New Jersey	Lanzar D3000M Schematics I know this is a longshot, but can anyone help me source the schematics for this amp. IT's probably not a great amp to most people, but I really would like to fix this one .

21st July 2007, 11:08 PM	#3
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Did you find any shorted output transistors? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

22nd July 2007, 02:00 AM	#5
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	It's not a good idea to replace components that aren't known to be defective. This is especially true for class D amplifiers. I've seen more than one that would not work properly when the original part number was used as a replacement. The manufacturers of semiconductors change the way they make the components and that can change some of the parameters. The HIP4080 based amps are especially sensitive to changes. The power supply FETs look like they've failed so they need to be replaced. The driver transistors may have failed. You can check the drive signal with a voltmeter. With the power supply FETs pulled, the DC voltage on pin 1 should be ~1/2 of the B+ voltage (red meter lead on pin 1, black meter lead on pin 3 or on the ground terminal of the amp). Check the drive voltage for all of the power supply FETs. Check all of the gate resistors to make sure all are within tolerance. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Old Lanzar amp problem	skooter	Car Audio	3	10th January 2011 07:54 AM
fault with my lanzar 50c amp	pulsarhks	Car Audio	1	4th March 2009 03:40 AM
lanzar la670 schematics	onarush	Car Audio	7	23rd June 2008 03:53 PM
Lanzar car dvd player	amphead123	Digital Source	0	22nd February 2008 07:08 PM
Schematics Lanzar Optidrive 100 Tms	gcu	Swap Meet	0	26th November 2005 04:20 PM


	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

20th July 2007, 01:03 PM	#2
mr24play diyAudio Member Join Date: Feb 2005 Location: New Jersey	Here are pics of my amp (12) IRFZ44N (8) IRF2807 After reading other posts regarding fets and realizing I need to shotgun both the power supply and output section. I wanted to know if you guys have any suggestions on better quality replacement parts. The controller is a KIA494AP. I honestly was hoping to sub a higher current mosfet in both sides. oh, how about the drivers, should i order them now and get it over with ? or wait until i test the PS side. Sorry I don't have any numbers yet, I'll do that this weekend, I was praying i could find the schematics, but that doesn't seem likely at this point.

22nd July 2007, 01:49 AM	#4
mr24play diyAudio Member Join Date: Feb 2005 Location: New Jersey	I wasnt going to look for any shorted ones, just replace them all. But before I ordered them I was hoping to see if there were any recommendations on better parts.

22nd July 2007, 02:08 AM	#6
mr24play diyAudio Member Join Date: Feb 2005 Location: New Jersey	Thanks Perry, Will do.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read