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Activity board issue — Parallax Forums

Activity board issue

DiverBobDiverBob Posts: 1,110
edited 2015-04-26 19:22 in Propeller 1
It appears that the 5v reg on my prop Activity board is fried. Has anyone successfully replaced the regulator? It has a standard Digikey number on the parts list, debating whether to fix it myself.

Bob

Comments

  • Hal AlbachHal Albach Posts: 747
    edited 2015-04-26 19:22
    If the regulator doesn't appear physically damaged and the magic smoke hasn't escaped check pin 1 (closest to board edge) for a positive voltage near what Vin is. On mine I have a 2S LIPO battery plugged into the power jack and can measure a little over 6 Volts on pin 1. If that pin is at 0 Volts then the regulator is shut down, possibly by the position of the Power Switch or the small mosfet near it having shorted out.
    If the regulator is bad it does not appear to be an easy replacement since the device has a substantial thermal pad soldered to the ground plane, much more than what you see sticking out.
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