Hi rob5088,you can send email to
service@mars-hydro.com.
In order to make the progress more quickly,your email should include the following informations:
1 where did you bought,official website,Amazon or ebay?
2 the date you bought your light.
3 two pics
ne with the light on,one with the light off.
4 with the description of your problems.
5 your contact information.
And you can tell them that you need send the light to our repair center.My colleague is in charge of repair service,she will help you to diagnose and solve the problem .Hope everything will be fine soon.