To return LED products under warranty:

DDP® LEDs are warranted against defects of manufacture for 3 years from date of purchase, providing they have been subjected to normal use and service. Any replacement will be made at no charge except for necessary shipping charges.

Firstly, call the factory for a return authorization number.

Return the products with the return authorization number prominently displayed.
All freight must be prepaid.

This warranty is expressly in lieu of all other warranties expressed or implied and does not extend in any way to consequential or incidental damages, including injury to persons or damage to property.

The terms of this warranty may not be amended, altered or extended except by an instrument in writing executed by an officer of Data Display Products.