The gate resistors were burnt and out of tolerance
The source resistors and drivers and gate resistors for the outputs check fine.
I replaced the drivers for the power supply.
Could the 494 be defective?
Im getting 12 volts at the power supply fets but im getting 17 volts on pins 8,11,12 of the 494
The source resistors and drivers and gate resistors for the outputs check fine.
I replaced the drivers for the power supply.
Could the 494 be defective?
Im getting 12 volts at the power supply fets but im getting 17 volts on pins 8,11,12 of the 494
Regulators are fine they output the correct voltage.
If i take the outputs out of the amp the light stops flashing but the power light never comes on.
Heres what i get on the 494
Pin 1:2.28
Pin 2:2.49
Pin 3:0.07
Pin 4:0.00
Pin 5:1.53
Pin 6:3.44
Pin 7:0.00
Pin 8:16.38
Pin 9:6.60
Pin 10:6.60
Pin 11:16.38
Pin 12:16.38
Pin 13:5.02
Pin 14:5.02
Pin 15:5.02
Pin 16:0.00
Wondering why the voltage is so high on pins 8,11,12
Do the rest of the voltages look correct or maybe i have a defective 494
If i take the outputs out of the amp the light stops flashing but the power light never comes on.
Heres what i get on the 494
Pin 1:2.28
Pin 2:2.49
Pin 3:0.07
Pin 4:0.00
Pin 5:1.53
Pin 6:3.44
Pin 7:0.00
Pin 8:16.38
Pin 9:6.60
Pin 10:6.60
Pin 11:16.38
Pin 12:16.38
Pin 13:5.02
Pin 14:5.02
Pin 15:5.02
Pin 16:0.00
Wondering why the voltage is so high on pins 8,11,12
Do the rest of the voltages look correct or maybe i have a defective 494
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- General Interest
- Car Audio
- Rockford Fosgate P300-1