Rockford Fosgate 800a2 Repair Help

[rhempz01]

OK so I also went ahead and ordered new if9640 just invade. I pulled the Mosfets from the channel all seem OK to me just the one was shorted I believe. They all read the same 1-3 open and 2-3 7.35M. So I'll start on the other channel the current resistor comes Tuesday. And the other components.

 

[rhempz01]

Perry I used the resistor u recommended and have 38.5v on the 200 channel

 

[rhempz01]

New

 

[Perry Babin]

Do you read the same for every output transistor of the same part number (measuring resistance from pin 1-2, 1-3 and 2-3) in that channel?

If you haven't done so, solder the wires on that limiting resistor.

 

[rhempz01]

Wires are sodered. And they all measure 1-3 open 1-2 open 2-3 5.41k and rising

 

[rhempz01]

I think I had the wrong components in q220, q320 I used irf9640's in them, per the scheme u gave me they are irf640's, while testing dc I realized they had a - v like the 640's. Can u verify which transistor I am supposed to have in q220-q320.?

 

[rhempz01]

38.6v at the gate on the 9640's, at the speaker terminal it's 19.6mv