# Lights quit working?

**URL:** <https://discuss.bluerobotics.com/t/lights-quit-working/2815>\
**Category:** Blue Robotics Software\
**Created:** [June 18, 2018, 1:21am UTC](https://discuss.bluerobotics.com/t/lights-quit-working/2815 "2018-06-18T01:21:02Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![noreply](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/noreply/32/1406_2.png) [@noreply](https://discuss.bluerobotics.com/u/noreply)\
**Post date:** [June 18, 2018, 1:21am UTC](https://discuss.bluerobotics.com/t/lights-quit-working/2815/1 "2018-06-18T01:21:02Z")

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Okay, I installed my newton gripper and updated my software. Everything works as before except my lights?

Things I have done: reloaded default configuration, tested lights by jumping signal wire to 12v, signal wire connected to main output channel 7 on pixhawk, lights 1 set to channel 7, and I can see servo7\_raw parameter change in the MAVlink Inspector. What am i missing?

Thanks. Jake

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**Author:** ![patrickelectric](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/patrickelectric/32/2162_2.png) [@patrickelectric](https://discuss.bluerobotics.com/u/patrickelectric)\
**Post date:** [June 19, 2018, 1:42pm UTC](https://discuss.bluerobotics.com/t/lights-quit-working/2815/2 "2018-06-19T13:42:44Z")

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Hi Jake,

From: [Lumen Light](http://docs.bluerobotics.com/lumen/#quick-start-onoff-with-no-pwm-signal-source)

> Quick Start (on/off with no PWM signal source)  
> Connect the power wires to a power source  
> Red: +10-48 volts  
> Black: Ground  
> Connect the yellow signal wire to the the power wire directly or through a switch to turn on to full brightness

The lights are not working when you do this ?

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**Author:** ![noreply](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/noreply/32/1406_2.png) [@noreply](https://discuss.bluerobotics.com/u/noreply)\
**Post date:** [June 20, 2018, 3:20am UTC](https://discuss.bluerobotics.com/t/lights-quit-working/2815/3 "2018-06-20T03:20:35Z")

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Hi Patrick, The lights do work when I do “Quick Start on/off with no PWM signal source”  
A strange new problem has presented itself as I continue to troubleshoot this problem:

One lumen light (the last light in the chain) starts to flicker at the 63% step and then is steady at 75%, 88% and 100%. I have 8 brightness steps set in the set-up tab. But when I do the quick start and connect the signal wire to +12V they both light up. My battery voltage for testing is 16.4V.

I know, weird.

Thanks, Jake

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**Author:** ![noreply](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/noreply/32/1406_2.png) [@noreply](https://discuss.bluerobotics.com/u/noreply)\
**Post date:** [July 2, 2018, 4:43am UTC](https://discuss.bluerobotics.com/t/lights-quit-working/2815/4 "2018-07-02T04:43:55Z")

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@patrickelectric  
I had another set of lights and used those to troubleshoot my issue. They worked as expected so I decided to open up my lights to see if there was any signs of water ingress. This is what I found:

 ![Lumen1](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/2X/e/e10a165169010cb0c58aebfb0226055b7ab87529.jpg)  
 ![Lumen2](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/2X/c/c12f8b6bf6b08317ca9d0c3ba602c9ce04d15cac.jpg)

It appears that there is some corrosion from a small amount of water ingress. Should I attempt to clean the contacts and reassemble the light?

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**Author:** ![patrickelectric](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/patrickelectric/32/2162_2.png) [@patrickelectric](https://discuss.bluerobotics.com/u/patrickelectric)\
**Post date:** [July 2, 2018, 12:59pm UTC](https://discuss.bluerobotics.com/t/lights-quit-working/2815/5 "2018-07-02T12:59:36Z")

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Hi Jake,

This appears to be an infiltration issue, please contact [support@bluerobotics.com](mailto:support@bluerobotics.com) with this pictures for replacement.

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**Author:** ![noreply](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/noreply/32/1406_2.png) [@noreply](https://discuss.bluerobotics.com/u/noreply)\
**Post date:** [July 2, 2018, 8:02pm UTC](https://discuss.bluerobotics.com/t/lights-quit-working/2815/6 "2018-07-02T20:02:20Z")

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@patrickelectric  
Thank you Patrick, I will contact support.

Jake