Good evening
Trying to figure out why pin 4 of the 494 is at 4.36v. Pin 3 is only 0.078v. Not sure why it's not being pulled down to allow the amp to turn on. 🙁
I have the following readings on the 494:
Pin 1: 0.00v
Pin 2: 4.94v
Pin 3: 0.078v
Pin 4: 4.36v. ????
Pin 5: 1.65 v (nice saw tooth form)
Pin 6: 3.65v
Pin 7: 0.00v
Pin 8: 12.19v
Pin 9: 0.00v (No wave form)
Pin 10: 0.00v (No wave form)
Pins 11-12: 12.19
Pins 13-15: 4.94v
Pin 16: 0.00v
Thoughts? I've removed the rectifiers hoping it might isolate something but no luck.
Thanks in advance
Trying to figure out why pin 4 of the 494 is at 4.36v. Pin 3 is only 0.078v. Not sure why it's not being pulled down to allow the amp to turn on. 🙁
I have the following readings on the 494:
Pin 1: 0.00v
Pin 2: 4.94v
Pin 3: 0.078v
Pin 4: 4.36v. ????
Pin 5: 1.65 v (nice saw tooth form)
Pin 6: 3.65v
Pin 7: 0.00v
Pin 8: 12.19v
Pin 9: 0.00v (No wave form)
Pin 10: 0.00v (No wave form)
Pins 11-12: 12.19
Pins 13-15: 4.94v
Pin 16: 0.00v
Thoughts? I've removed the rectifiers hoping it might isolate something but no luck.
Thanks in advance