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Unread 13-02-2009, 10:45
EricVanWyk EricVanWyk is offline
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Re: Burned out 2 5V regulators on Power Distribution boards

All of the reports I've received of damaged 5V regulators on the PD were caused by a lack of isolation between the camera and the chassis. The failure mode is that a trace on the underside of the board acts as a one-time-fuse.

The only other failure mode that that supply has reported is that it smokes when reverse biased on the Analog breakout.

I did see one failure in which the robot did pass R43. The camera was somehow shorted to the output of a victor. Once the victor was turned on, it completed the circuit and released the doom.

If you are using the kit metal pan/tilt unit that you will have a dynamic short that only occurs when the robot is accelerating.

Please check to see if you are encountering a similar situation.