If you want to repair the LED sign
You need to open the back cover to see if the controller is working, or if the power supply is working. Then, I will send you the replacement part.
Tutorial: Open the back cover
The indicator of LED Sign
https://youtu.be/5Rp4WoZ25CU
Note: Please send the product model No., size, resolution to hillsun192@gmail.com, If no this information, take the photo of the label on the back of LED sign
