Case #250848
When I power everything up on my 17 and put it in test mode the first 5 channels do not work. If I unplug the strand and put it back in works
Current Issue
When I power everything up on my 17 and put it in test mode the first 5 channels do not work. If I unplug the strand and put it back in works
Support Team Updates
Dom
December 20, 2025 at 11:25 PM
Hey Steve, can you add some photos of your setup and the Baldrick data on the urls on the form, that would be really helpful, thanks
Affected Boards
Case Details
Steve Fabionar
5/10
I'm alright at this actually
Saturday, December 20, 2025
at 11:06 PM
System Information
V3.5.4
Windows
Possible Solutions

ChatBotDom suggests
Test Mode outputting wrong pixels
The test mode defaults differ depending what ports you have configured on the board
If there are no models on the board then we will default to lighting up the first 50 pixels per port
If there are models, we will default to lighting those up.
Once enabled you can easily switch to another mode
Wrong pixels are lighting up when played from xLights
Normally this indicates that something has changed on the layout but the controllers hasn't been updated, if you can re-render the sequence then save, then go to the controllers tab in xLights and click Upload Outputs to the relevant controller.
Wrong pixels are lighting up when played from FPP
Normally this indicates that something has changed on the layout but FPP hasn't been updated, if you can re-render the sequence then save, then FPP Connect and make sure UDP Out is set to ALL.