MTX 1501D schematics

[Maxikill97]

Hi Guys,

Does someone has the schematics from the MTX 1501D?
Attached is a photo of the PCB.

 

[Perry Babin]

I have partials of various sections. What do you need to know?

 

[Maxikill97]

From the power supply and the output section (output driver circuit is the most important)

 

[Perry Babin]

There isn't much of an output driver circuit. The 3120 optocouplers drive an RC network then to the gate resistors. What part of that is in question?

 

[Maxikill97]

Half of the parts are blown with unvisible markings.
With the schematics I can find the part numbers and fix the amp.

 

[Perry Babin]

I have photos that I can use as a reference. Which parts are burned?

 

[Maxikill97]

Some parts around the 3120 optocouplers.
Especially the transistors around are exploded. If you have photo's from the 3120 optocouplers area it would be great!

 

[Perry Babin]

Give me an example (circuit board designation) of the group of components involved.

 

[Maxikill97]

Some component markings involved:
D279, D280, D281, D240, Q274, Q240, R280

 

[Perry Babin]

See attached.

 

[Maxikill97]

Thank you for the photo Perry!
The needed components are not visible on that photo.

The components are placed right next to the 3120 optocouplers on a more left side of the amp.

 

[Perry Babin]

No clue how I did that.

Try these. Q274 is marked 2L. Let me know if there are any others that you can't read.

 

[Perry Babin]

The SE is correct.