# No power in HL7800 Dev Kit

**URL:** <https://forum.sierrawireless.com/t/no-power-in-hl7800-dev-kit/26798>\
**Category:** IoT Modules\
**Tags:** debug\
**Created:** [April 13, 2022, 1:24am UTC](https://forum.sierrawireless.com/t/no-power-in-hl7800-dev-kit/26798 "2022-04-13T01:24:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![nestor.naveda](https://avatars.discourse-cdn.com/v4/letter/n/96bed5/32.png) [@nestor.naveda](https://forum.sierrawireless.com/u/nestor.naveda)\
**Post date:** [April 13, 2022, 1:24am UTC](https://forum.sierrawireless.com/t/no-power-in-hl7800-dev-kit/26798/1 "2022-04-13T01:24:13Z")

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Hello, I am trying to work with an HL7800 Dev Kit that I was using some time ago but forgot how to turn on. I checked the position of the jumpers and that I’m using the proper power supply.

It seems that the 1.8V rail isn’t powered for some reason, and I’d like to know if someone has any ideas of what it could be?

Here’s a picture of my board:

 ![20220412_182606](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/c/c936d0b5bd58dd7a77513e725f4a42ffad5fae41.jpeg)

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**Author:** ![jerdung](https://avatars.discourse-cdn.com/v4/letter/j/82dd89/32.png) [@jerdung](https://forum.sierrawireless.com/u/jerdung)\
**Post date:** [April 13, 2022, 2:53am UTC](https://forum.sierrawireless.com/t/no-power-in-hl7800-dev-kit/26798/2 "2022-04-13T02:53:21Z")

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Hi nestor.naveda,

Please check your HL7800 module and its cover if they are in correct orientation.

It’s fine with my devkit

 ![480B852C-F5DB-4AAD-9C1D-4EC360F07DFE](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/2/21899942674ada931bed862610af9c7ff62fec76.jpeg)

Thanks,

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<div class="post-metadata">

**Author:** ![nestor.naveda](https://avatars.discourse-cdn.com/v4/letter/n/96bed5/32.png) [@nestor.naveda](https://forum.sierrawireless.com/u/nestor.naveda)\
**Post date:** [April 13, 2022, 6:38pm UTC](https://forum.sierrawireless.com/t/no-power-in-hl7800-dev-kit/26798/4 "2022-04-13T18:38:14Z")

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Thank you Jerdung,

I made sure the module was positioned correctly and the ‘BAD\_CONFIG’ led isn’t flashing. The issue still persists. Does anything else jump to mind?

Thanks for your help 😁

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**Author:** ![jerdung](https://avatars.discourse-cdn.com/v4/letter/j/82dd89/32.png) [@jerdung](https://forum.sierrawireless.com/u/jerdung)\
**Post date:** [April 20, 2022, 9:05am UTC](https://forum.sierrawireless.com/t/no-power-in-hl7800-dev-kit/26798/5 "2022-04-20T09:05:08Z")

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Hi estor.naveda,

Could you try with another HL7800 module on this devkit? Also, check your adapter output from your power supply. My adapter output is 4V-3.75A.

Thanks,

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**Author:** ![nestor.naveda](https://avatars.discourse-cdn.com/v4/letter/n/96bed5/32.png) [@nestor.naveda](https://forum.sierrawireless.com/u/nestor.naveda)\
**Post date:** [May 18, 2022, 8:21pm UTC](https://forum.sierrawireless.com/t/no-power-in-hl7800-dev-kit/26798/6 "2022-05-18T20:21:53Z")

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Turns out I was checking on hardware too closely. Even when the leds were not working, I could still interface with the CLI. Thanks for all the help!