soundigital 12000.1 EVO

[paolocognigni]

Hi everyone ! I have this soundigital amplifier to repair and at first glance it has damaged final mosfets! The abbreviation of mosfets is C2, what kind of mosfet are they?

 

[GZinc]

IRFB4321PBF for to220 package (this is the one i see in your pictures)

AND 90N20D FOR TO247 package (from Barevids )

 

[paolocognigni]

i have irfb4228 and irfb4321 !

 

[GZinc]

The irfb4321, change all, not just the blown ones. check gate resistors and diodes, remove rectifiers and power up, see if she's happy. ( i would mark the rectifiers to go back in same spot )

 

[Perry Babin]

What's the rail voltage in the amp?