Mtx terminator tna251 help.

[rhempz01]

So the blew all the ps fets, and probably the outputs too. Legs 2-3 are shorted on all output transistors. The amp had 75n06 in the power supply which i switched for 3205's and in q1-4 replaced the drivers with mps56-06? The amp powered up however i left it on 9v and it drew over 3amps.

 

[rhempz01]

Board.

 

[Perry Babin]

Why 9v?

 

[rhempz01]

Just to make sure nothing else was wrong Perry, I turned up slowly, but it remained at high current.

 

[rhempz01]

I wasn't completely sure about the drivers also. I believe I did it all right it just the outputs? They short between legs 2-3 I don't have them I was wondering if I could use something else.?

 

[Perry Babin]

Use the original part number output transistors if they're available from a reputable distributor.

 

[rhempz01]

The amp has a hard turn off perry. It's working but it's turn off almost blows a speaker, should I go back to the original 75n06? I have 70n06 in stock will they work with the original drivers

 

[Aaron waldrop]

I know this is the old thread but I just acquired MTX tna251 the board looks similar to the board y'all have posted but it is a little different the amp just flashes the red light when it's connected to power I took the cover off and there is a resistor in between two of the capacitors that is blown but I can't read the board to know what to replace it with does anyone have a circuit board diagram for

 

[rhempz01]

Start a new thread with photos of the board and good pictures of the burned components. Someone will then be able to help you.
The silk screen on the board should have part numbers as well a designation.