repair old chinese led?

[DRThompson]

I have 2 units (chinese 120W LED lights) These are the older nondimmable lamps from about 3 years ago. They do not light up.

<a href="http://s1072.photobucket.com/user/pharmd99/media/SPHS%20tank%20upgrade/led120w_zpsb4b5e03a.jpg.html" target="_blank"><img src="http://i1072.photobucket.com/albums/w362/pharmd99/SPHS%20tank%20upgrade/led120w_zpsb4b5e03a.jpg" border="0" alt=" photo led120w_zpsb4b5e03a.jpg"/></a>

They have pcb boards that run the led's.

Has anyone had any experience repairing these lights?