# External power supply damaged board?

**URL:** <https://discourse.myriadrf.org/t/external-power-supply-damaged-board/1207>\
**Category:** LimeSDR\
**Created:** [9 May 2017 00:07 UTC](https://discourse.myriadrf.org/t/external-power-supply-damaged-board/1207 "2017-05-09T00:07:08Z")\
**Posts on this page:** 1\
**Showing post:** 60

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**Author:** ![G0MJW](https://avatars.discourse-cdn.com/v4/letter/g/aeb1de/32.png) [@G0MJW](https://discourse.myriadrf.org/u/G0MJW)\
**Post date:** [23 February 2019 21:29 UTC](https://discourse.myriadrf.org/t/external-power-supply-damaged-board/1207/60 "2019-02-23T21:29:49Z")

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No nothing - and I wasn’t even using an external supply when it happened. It was just running off USB, idling as I was doing DATV stuff. Worked earlier and then was cold and dead. I see the ferrite choke identified above has failed and there is a low impedance on the far side of it. I think something has failed in the power supply, or worse. No idea how to proceed apart from sending it back.

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