# Testing Lightburn, Brought laser head from ebay, no light emitting

**URL:** <https://forum.lightburnsoftware.com/t/testing-lightburn-brought-laser-head-from-ebay-no-light-emitting/23739>\
**Category:** GRBL\
**Created:** [October 12, 2020, 4:44pm UTC](https://forum.lightburnsoftware.com/t/testing-lightburn-brought-laser-head-from-ebay-no-light-emitting/23739 "2020-10-12T16:44:10Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![HRFONE](https://forum.lightburnsoftware.com/letter_avatar_proxy/v4/letter/h/d2c977/32.png) [@HRFONE](https://forum.lightburnsoftware.com/u/HRFONE)\
**Post date:** [October 12, 2020, 4:44pm UTC](https://forum.lightburnsoftware.com/t/testing-lightburn-brought-laser-head-from-ebay-no-light-emitting/23739/1 "2020-10-12T16:44:11Z")

</div>

Basically brought a laser head from ebay brand new, connected it up, fired up lightburn it moves fine, LED on the laser head appears but no laser light is being emitted no idea is it’s a software issue or if the laser head itself is faulty.

Any help will be appreciated, this has been frustrating as waited a month for the laser to be delivered.  
Thanks

EDIT: found the control board marking Controller board markings CNC-01 V2.0 170708  
Vigotec VG-L3A frame

This guy seems to have ran into the same if not similiar issue [Laser on but does not mark wood, cardboard or plastic](https://forum.lightburnsoftware.com/t/laser-on-but-does-not-mark-wood-cardboard-or-plastic/22011)

tough have no idea what his solution was.

---

<div class="post-metadata">

**Author:** ![HRFONE](https://forum.lightburnsoftware.com/letter_avatar_proxy/v4/letter/h/d2c977/32.png) [@HRFONE](https://forum.lightburnsoftware.com/u/HRFONE)\
**Post date:** [October 13, 2020, 5:51pm UTC](https://forum.lightburnsoftware.com/t/testing-lightburn-brought-laser-head-from-ebay-no-light-emitting/23739/2 "2020-10-13T17:51:06Z")

</div>

I fixed the issue, the control board has the positive and yellow the wrong way so i swapped the wires around and it now works. Can now engrave!

---

<div class="post-metadata">

**Author:** ![system](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/system/32/64335_2.png) [@system](https://forum.lightburnsoftware.com/u/system)\
**Post date:** [November 12, 2020, 5:51pm UTC](https://forum.lightburnsoftware.com/t/testing-lightburn-brought-laser-head-from-ebay-no-light-emitting/23739/3 "2020-11-12T17:51:07Z")

</div>

Closed on November 12, 2020, 5:51pm UTC

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.