MTX THUNDER 1000XDR

[Albis2985]

Good morning everyone I have this amplifier in the workshop without output mosfet and without source mosfet any idea which mosfet uses this amplifier for both sections

 

[Perry Babin]

Post a photo of the internals of the amp if no one has any definitive answers.

 

[Albis2985]

Good morning Perry, sorry for the image quality is what I have at the moment the camera still does not arrive and well I discovered that it is in equal protection raise Q101 next to R101 and pin 4 of the tl494 fell to 0 volts I can not find that I can be pulling on the base of that transistor. I told you that I also changed the lm339 but nothing remains the same in protection.

 

[Perry Babin]

Does the output stage look similar to the one in the following amp:
http://www.bcae1.com/temp/sony - XM-D400P5_Car Power Amplifier SM.pdf

 

[Albis2985]

ok I understand but the mosfet SSP45N20A are discontinued you know a good replacement for them and you think that at the source I can use irf3205. Of course after solving because it is protecting

 

[Perry Babin]

So, you're confirming that the circuits are similar?

 

[Albis2985]

if the output stage is quite similar to the one in the diagram

 

[Perry Babin]

If that's a yes, the IRFB31N20D should work for the output FETs.

The IRF3205s will work in the PS.