Rockford Fosgate T2500-1bd

[Perry Babin]

What's the DC voltage on the two terminals at the rear end of the driver board?

 

[caraudioguy2100]

The ones marked 1 and 2?

 

[Perry Babin]

yes

 

[caraudioguy2100]

Pin 1:1.23
Pin 2:0.00

 

[Perry Babin]

If you drive audio into the amp, do you see audio on pin 1?

Have you operated all pots and switches through their entire range while listening for audio to see if it every played through (even just for an instant)?

 

[caraudioguy2100]

I will reinstall the rectifiers and see if I get audio on pin 1 and if it plays any audio at all

 

[Perry Babin]

I'm sorry, I meant to the driver board.

 

[caraudioguy2100]

On pin 1 of the driverboard all I bet is a square wave no matter where the settings are

 

[Perry Babin]

If you reduce the signal, does it go back to a sine wave?

 

[caraudioguy2100]

No

 

[Perry Babin]

What's the frequency of the test signal?

What's the frequency of the square wave?

 

[caraudioguy2100]

100hz test signal .

how do I test the frequency of the square wave

 

[Perry Babin]

On pin 1 of the driver board.

 

[caraudioguy2100]

I get a square wave even with no audio on pin 1 . And it’s 7k

I used my meter set on frequency

 

[Perry Babin]

There appears to be a problem before the class D section.

Was the 7k signal constant no matter the position of any of the pots or switches?

 

[caraudioguy2100]

It went as far up as 9k and adjusting the switches /pots it went back down to 7k

 

[Perry Babin]

Do ALL of the controls vary the frequency or was it one, specifically?

 

[caraudioguy2100]

I just cleaned all switches and pots now the 7k frequency is constant never changes

 

[Perry Babin]

What signal do you see on pin 7 of U106 of the main board?

 

[caraudioguy2100]

Where is U7 on main board ?