could be bad ballast, had several go bad on me already. unfortunately, the ray2 has ballast in the fixture itself while the weaker fugeray has the ballast in the power cord. you can easily replace fugeray ballast with wall wart and simple connectors but ray2 requires more work and disassembly of the fixture iteself. best left to finnex to do. if its out of warranty you need to pay for shipping both ways and repair cost. seller is dumping it for next to nothing most likely because that cost is almost as much as a new fixture. better to buy new and get a warranty.