Rockford Fosgate Punch 601S

[caraudioguy2100]

Yes .

But now the amp won’t even power up I don’t get this amp .

Here is what I get on the 494

Pin 1:0.00
Pin 2:4.80
Pin 3:0.04
Pin 4:4.91
Pin 5:1.48
Pin 6:3.37
Pin 7:0.00
Pin 8:13.20
Pin 9:0.00
Pin 10:0.00
Pin 11:13.20
Pin 12:13.20
Pin 13:4.96
Pin 14:4.96
Pin 15:4.96
Pin 16:0.00

 

[Perry Babin]

Install one of those Zeners across C15. Black stripe end on the positive side of the cap.

 

[caraudioguy2100]

Ok I installed the diode

But can’t get the amp to come on now

 

[Perry Babin]

Post the DC voltage on the LM339.

 

[caraudioguy2100]

Pin 1:0.00
Pin 2:0.00
Pin 3:13.20
Pin 4:0.13
Pin 5:1.94
Pin 6:4.96
Pin 7:0.53
Pin 8:4.34
Pin 9:4.96
Pin 10:4.96
Pin 11:8.23
Pin 12:0.00
Pin 13:0.05
Pin 14:0.00

 

[Perry Babin]

Resistance terminal 6 to ground?

 

[caraudioguy2100]

2.031K

 

[Perry Babin]

Check R1, R2 and R3.

 

[caraudioguy2100]

They all test fine

 

[Perry Babin]

How can they test fine if R3 connects between pin 6 and ground? It's a 316 ohm resistor.

 

[caraudioguy2100]

R3 connects Between pin 8 and 11 on this amp

 

[Perry Babin]

Is this PC# 4333

 

[caraudioguy2100]

Yes PC-4333-8

 

[Perry Babin]

So, the diagram you got from Rockford is wrong?

 

[caraudioguy2100]

The board number matches the schematic they sent me but R3 is connected to the board as shown

 

[caraudioguy2100]

Pin 12 of the 339 is directly connected to ground in the amp

Pin 6 connects to R29 13.3k ohm resistor then to R330 9.09k then to ground

 

[Perry Babin]

Email Rockford to see if they have a different revision. I think yours is -B, not -8.

 

[caraudioguy2100]

It might be a B on the circuit board .

The schematic is for a B board

 

[caraudioguy2100]

I have an 800a2 board here same layout as this amp .

Pin 6 isn’t directly connected to ground either

The 800a2 is bird number PC2038-G

 

[Perry Babin]

I think the 339 may be defective.