Some of these amps have pulldown resistors and some don't.
With the amp OFF, remove the IC and measure the resistance from pin 4 to the four output pins of the IC. If they read about 470k, it should be safe.
With the amp OFF, remove the IC and measure the resistance from pin 4 to the four output pins of the IC. If they read about 470k, it should be safe.
I install one new output FET in each bank and a new 4080 but amp in some kind of mode.
I see rail and regulated voltages but no drive on the output .Relay clicks no dc offset on the speaker terminals.Any suggestions?
I see rail and regulated voltages but no drive on the output .Relay clicks no dc offset on the speaker terminals.Any suggestions?
Then the answer to your original post is yes.
What's the DC voltage on pins 5, 6 and 7 of the 4080?
What's the DC voltage on pins 5, 6 and 7 of the 4080?
If you have 12v on pins 15 and 16 of the 4080, post the DC voltage on all terminals of IC4C.
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
I had 5.34v on these pins ,so I remove the limiter and power it up.The 4080 started heating up fast.I remove it and the voltage came back up to 12v.
I install another new IC which seem to be working right now.I don’t know what caused it to fail.
I install another new IC which seem to be working right now.I don’t know what caused it to fail.