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diff --git a/Documentation/Troubleshooting.md b/Documentation/Troubleshooting.md index 7f4c8bb4..1c9ef0eb 100644 --- a/Documentation/Troubleshooting.md +++ b/Documentation/Troubleshooting.md @@ -14,6 +14,18 @@ But it is helpful to do some basic diagnostics first just in case the issue is e The **VAST** majority of issues are poor soldering or cold solder joints. If you can open up your iron, give it a good look at all the connection points, and use another iron to reflow any suspicious ones, this can fix most issues. +## Tip Shorted warning + +If you are powering up a device that supports tip resistance detection (TS101 and Pinecilv2 as of present), the firmware checks the readings of the raw tip resistance and sorts these into three "bins". `8 ohm tips`, `6.2 ohm tips` and `tip-shorted`. The tip resistance is used when negotiating USB-PD and in thermal calculations. +The `tip-shorted` option is selected if your tip is measured to be abnormally small. This could indicate a failed driver mosfet or a failed tip. + +When this warning is shown; heating will be disabled to protect from damage. As trying to heat a shorted tip can damage the iron itself. + +It is best to take out your tip and manually measure and verify the tip's resistance. It should be 6-8 ohms (depending on tip type). When measuring resistances this small some multimeters can struggle. If you have access to a current limited bench power supply, you can try doing a 4 wire measurement by measuring the voltage drop on the tip while applying a known current. `(R=V/I)`. + +If the tip measures correctly you may have a damaged driver mosfet; it would be ideal to open your iron and test the mosfet is operating correctly. +If after both of these checks everything looks as expected, feel free to open a discussion on IronOS to talk about the issue (Or for Pinecil the community chat can be a much faster response). + ## High tip temp reading when the tip is cool If you are finding the tip is reading high; the first fields to check in the Debug menu are `RTip` and `CHan`. |