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Revision to Connector and spare part numbers

David Crocker

If you get a short in your wiring between your heater or fan wiring and the VSSA side of a thermistor connection, and you have a Duet 2 board revision 1.0 or 1.01 or a white Duet 2 Wifi pre-production board, then fuse F1 will blow. The symptoms are:
 
* All thermistors will show as open circuitcircuit;
* The resistance between a VSSA pin on the back of the boarda thermistor connector and a ground pinGND pin on an endstop connector, which should normally read less than 5 ohms, will be very high (the pins are labelled on the underside of the Duet).
* All thermistors will show as open circuitcircuit;
* The resistance between a VSSA pin on the back of the boarda thermistor connector and a ground pinGND pin on an endstop connector, which should normally read less than 5 ohms, will be very high (the pins are labelled on the underside of the Duet).
 
If this happens to your Duet, you should first identify and fix the short. After that, do one of the following:

To undo the changes made by this version, click 'Revert Changes.' This will automatically restore the previous version of this guide.

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