Amp came in 2 output fets blown and power supply blown, repaired power supply and replaced all output fets, and fet drivers, amp powers on and out of protection but have positive rail Voltage on output, replaced audio driver board for a know working one but still have rail Voltage on the outputs
The inductor looks like it has a darkened winding.
Do all three 5v regulators have the proper voltage?
Troubleshooting on these is easiest for me with no rectifiers/rail voltage.
Do all three 5v regulators have the proper voltage?
Troubleshooting on these is easiest for me with no rectifiers/rail voltage.
The 2 outer 5v regulators have -84 on one and +84 on the other with reference to ground and the middle 5v reg has 5v. How would you troubleshoot without rectifiers?
The regulators aren't referenced to ground. Use the tab for the black probe.
I don't understand the question about the rectifiers.
I don't understand the question about the rectifiers.
What should they read black probe to tab?
You said troubleshoot without rectifiers or rail Voltage what should I be looking for without the rectifiers or rail Voltage
You said troubleshoot without rectifiers or rail Voltage what should I be looking for without the rectifiers or rail Voltage
The same things that you'd look for but without interference from the rails and the feedback from the output. A list of voltages on the header of the driver board would be a good place to start.
I don't like to tell people what they should read. It might influence the answer. If you don't know what to expect, post what you find.
I don't like to tell people what they should read. It might influence the answer. If you don't know what to expect, post what you find.
Found the issue, transformer winding had broken loose but was under black glue, so not visible resoldered and amp is up and running thank you Perry for the help, found the issue by checking voltages on the regulators, 1 was missing it's input voltage and traced it back to the winding
