soundstream tr500/4

[ultra]

Got this amp for repair.
Its in very poor condition and obvious that someone not very proficient tried to repair it before me.
For start, does anybody know what are the original power supply fets?
This thing has only one bank of buz90s with 22R gate resistors.
Additionally the thermal (NTC?) resistor is missing...

 

[Perry Babin]

If no one here knows, email SoundStream.

 

[ultra]

I did.
No answer after 48 hrs
If i am not wrong the amp has a totem pole of mpsa06/56 per side.
I think of changing the gate resistors to 47R and using 3205 or 70N06.
But i know nothing about the thermal component.

 

[Perry Babin]

Try emailing them again.

 

[ultra]

Ive tried twice to mail them to tech-support@soundstream.com but still no reply

 

[ultra]

Still no reply. Are those people for real?
Sorry, i cannot wait any more.
If i use IRFZ44s for power supply fets,do i use 22R gate resistor?