Discus DSC2000.1D maxxsonics built

[mbates14]

I have one of these, one side of the output bridge is blown up. They are IRFP264N transistors. I cannot find these anywhere. Anything that will sub to them?

Also the driver IC is scratched out and I dunno what it is. U2 on the driver board. I wiped it a litle bit, the only part I can make out is the IR symbol. Cant make out a part number, its a 14 pin SOIC. My guess maybe the IR2110 series? not sure.

Any ideas?

 

[Deadly Sones]

Can you post a pic of the driver board? Is it a 3s tech board?

 

[mbates14]

No its a "Class D2000W Drivercb-A02"

 

[mbates14]

Pictures. Not sure how thats gonna help becuase the chip number is gone.

 

[brandes.cm]

IR21844

 

[S Merlington]

For the outputs IRF4229 will make good subs

 

[mbates14]

No they wont, that is the wrong package type. Google corrected me, IRFB4229 and IRFS4229

 

[mbates14]

No one?

 

[S Merlington]

Sorry typo The IRFP4229 will work

 

[mbates14]

Ah, ok

 

[mbates14]

naa, something aint right. Stuck the new driver IC and all the new mosfets in it. That one side shorted all its outputs again instantly.

So either the driver IC is the wrong one, the ouputs are the wrong ones, or something else isnt right.

 

[mbates14]

i pulled the driver board back out, checked all the resistors, caps, transistors and diodes and they all test fine.

Checked the gate resistors too, they are all ok.

So the only conclusion I can draw is the IC is wrong. Any ideas?

 

[mbates14]

I found it. There is a resistor open and a diode shorted next to the toroid, but I cant/didnt see it as its blobbed over by the epoxy they used.

They went crazy with the epoxy gun.

 

[kozik666]

Hello . Can somebody confirm the information on the U2 and U1 that definitely has to be there IR21844?

http://www.galerieallegro.pl/zdjecia/Galeria/6704128/1

 

[KriszXJR]

This board similar with DWM3640NHV
U1-U2 IR21844s
U3 TL072, U4 LM311, U5 (or U6) LM293