If you peel off some of the protective cover are you able to see any labeling for the two LED lights?
Try googling some of the internal codes/labels: The "MAC", the 402VH52, any numbers on the back or bottom.
And be sure to search for "look-alike" products. Your receiver may just be some other existing make and model - only branded differently.
For example I found the following YouTube video:
https/www.youtube.com/watch?v=7pvF9o4uBGQ
Googled "Linux HD Receiver E3HD schematic" and focused on images.
Note the "Galaxy Innovations Genius E3HD" being shown.
Wiggle all the internal connections to ensure they are fully and firmly in place. Or check for anything wiggly and loose for that matter....
And, after-thought, may not run without detecting the presence of a fan.