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docs: Suggest checking for bad wires in "lost communications" faq entry 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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Kevin O'Connor 2019-01-07 10:28:25 -05:00
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@ -250,6 +250,9 @@ between the host machine and the micro-controller. Things to look for:
- Make sure the printer's power supply is not being overloaded. (Power - Make sure the printer's power supply is not being overloaded. (Power
fluctuations to the micro-controller's USB chip may result in resets fluctuations to the micro-controller's USB chip may result in resets
of that chip.) of that chip.)
- Verify stepper, heater, and other printer wires are not crimped or
frayed. (Printer movement may place stress on a faulty wire causing
it to lose contact, briefly short, or generate excessive noise.)
- There have been reports of high USB noise when both the printer's - There have been reports of high USB noise when both the printer's
power supply and the host's 5V power supply are mixed. (If you find power supply and the host's 5V power supply are mixed. (If you find
that the micro-controller powers on when either the printer's power that the micro-controller powers on when either the printer's power