I do have experience with repairing electronics but I don't have the equipment at the moment. And I already got the part I'm pretty sure. Someone recommended a, "IRFB4321PBF", would it be possible to take it to a computer repair place or something like that and see if they can replace it for me?
In these amps, if a mosset in the output section has failed it's 99.999999% sure that the driver IC has also died...then they tend to take out the voltage regulators. Just changing the mosfet would almost certainly not do the trick. And changing one is not good practice. If you are changing them, they have to be all from the same batch with almost/similar parameters.
It's not only IRFB4321PBF that would work.... I've managed to use several other mosfets too. These types of failure often goes from "just change 1 go" to a full rebuild.
It's not only IRFB4321PBF that would work.... I've managed to use several other mosfets too. These types of failure often goes from "just change 1 go" to a full rebuild.
It it VERY rare that only one FET fails.
Any FETs in parallel with the one that failed need to be replaced. This is such a small amp that it may not have any parallel FETs.
There is a very good chance that the drive circuit has also failed.
If you were very lucky, replacing the one FET may work but, again, that would be a rare failure. Maybe you will get lucky.
Whoever replaces it will need to clean and replace any heatsink compound if it was being used.
Any FETs in parallel with the one that failed need to be replaced. This is such a small amp that it may not have any parallel FETs.
There is a very good chance that the drive circuit has also failed.
If you were very lucky, replacing the one FET may work but, again, that would be a rare failure. Maybe you will get lucky.
Whoever replaces it will need to clean and replace any heatsink compound if it was being used.
You will need to change all the output Mosfets to IRFB4321. There are 4 that will need to be changed. You might be lucky that the drive IC is fine as from many I have repaired I mainly found that when the outputs blows the rectifiers also blows as well. So I would suggest you check that as well.