Lanzar 4000D

[megael9]

I'm working with a optic drive 4000D
Here is the problem that I'm having, IC4001 has both low and high signals coming out and going into pin 12 and 14 of IC IR2010, but only the low signal is coming out of IC2010.
I know I need to installed audio mosfets at the low side to get the high side signal out, but when I installed 2 mosfets one in the low and one in the high side, Both mosfets got destroyed.
Is there a way to cheat the IC2010 to force the high signal out?
Or is there some one that can provide me with a schematic?

 

[Perry Babin]

Post a photo of the driver board and the area around it.

 

[megael9]

Here are picture

 

[megael9]

Second picture

 

[Perry Babin]

Not a 2010. That's where I was confused.

Email me. I have some information that may help.
babin_perry@yahoo.com

 

[megael9]

Sorry it's the IR2113

 

[Perry Babin]

I sent the email.

For the high-side to produce output, you may have to provide it with a supply voltage (mentioned in email).

 

[megael9]

Hey Perry, I apply the voltage to board, and now I have both low and high signal out.
I soldered in all audio mosfets transistors, and now when I apply power the amp goes into protection mode after the relays click on. any idea?

 

[Perry Babin]

Before the relay clicks, do you have rail-rail oscillation on the output FETs?

 

[megael9]

on the low side there is -113 on the gate - 84 on the drain and -113 on the source
on the high side there is -89 on the gate +114 on the drain and -89 on the source
all with reference to battery ground and before relay click.

 

[Perry Babin]

You have about -90v on the output. That's likely triggering the DC offset protection.

Do you see negative voltage on the feedback pin of the driver board? Check where the pin enters the driver board, not on the main board.

 

[megael9]

with reference to the battery terminal ground there is -89 volts before relay click and
-94 volts after relay.
with reference to the fb ground { pin 7 of driver board } there is +84 volts before relay and +97 volts after relay.

 

[Perry Babin]

Pin 6 is the ground for the driver board. Pin 7 is feedback from the output of the amp.

 

[megael9]

PIN number 6 is label -15 on the back of the driver board

 

[Perry Babin]

My mistake. The ground for the driver board is pin 2. The feedback ground is capacitively coupled to ground off of the driver board.

 

[megael9]

Thank you for the schematic, however it doesn't have the driver board part in it.
Do you have a schematic of the driver board?
Thanks in advance

 

[Perry Babin]

I do not. The xx6500 diagram has the pin configuration of the driver board. That's what I read wrong.

 

[megael9]

hey Perry:
should I order a driver board?
I replaced the ir2113 chip and still goes into protection mode.

 

[Perry Babin]

Is it available? How much?

 

[megael9]

I have no idea where to get it from. will lanzar sell this board?