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How to Fix Brother Sewing Machine Error Code F8

Q: What does F8 error message mean?
A: Power supply failure
Q: How to fix F8 error message?
A: Unplug the sewing machine and check the wiring connection between the power supply PCB assembly and the main PCB assembly. Reconnect any loose wires. If the wiring connections are okay, check the output voltage from the power supply PCB. Note: You should check this output voltage only if you're completely confident in your technical ability to safely perform this test. Follow electrical safety guidelines when checking this voltage. Wear electrical safety gloves when conducting the test. Unplug the sewing machine immediately after completing the test. Check for 5 VDC between pins 2 and 3 on PCB assembly connector CN201. Check for 30 VDC between pins 4 and 3 on the same connector. If voltage on those pins is incorrect, replace the power supply PCB assembly. If the voltage is correct, replace the main PCB assembly.

Or just give us a Call Toll Free: 800-401-8151! We'll be happy to assist you in solving your sewing machine trouble. We are a certified service center, and have over 40 years of experience backing us!