HELP????LED repair

Can anyone tell me where I can send my LED panel to be repaired?????I have a 300 watt panel that is only abot 5 grows old and it blinked a couple of times one morning and then wouldn't come on again.The fans all still work just need tofind out why the lights won't come on.I paid like 799 for it two years ago and hate to throw it away as it should have lots of hours left(50,000hrs-5grows).PLEASE help me out somebody.

Sounds like the power supply. Also look over all the leds for anything that looks burnt. Who makes it?

the manufacturer is LED Grow Supply.Thanks for the ideas but I am not good with electronics but when i find someone to tinker on it I'll keep that in mind.