Working on rebuilding an 800.2 completely. I’m stuck on the drive circuit. I have no output to the gate pins. I’ve replaced TL494C with a new one also replaced all four smt 2A / 1A. There’s no voltage present at the gates.
Attachments
I should have asked the board number. It appears to be a 4092. I was looking at the 3093.
Pin 4 is shutting the IC down.
Copy and paste the following list and fill in the blanks.
DCV all pins of the LM339:
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 4 is shutting the IC down.
Copy and paste the following list and fill in the blanks.
DCV all pins of the LM339:
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
If you lift D11 and D12, does the amp power up?
See if the following page helps with the scope:
https://www.bcae1.com/oscope.htm
See if the following page helps with the scope:
https://www.bcae1.com/oscope.htm
- Home
- General Interest
- Car Audio
- Rockford Fosgate power 800.2 no drive signal