List a few with 2 year warranties. The technology is not there yet in an affordable form.
It depends how you define "affordable". LEDs start-up price can seem like a lot when you don't factor in replacing bulbs, electricity costs and heat generation. Not to mention , the best aptitude to develop high quality light (next to plasma...).
I did a lot of research first and I wasn't willing to risk thousands of dollars on a relatively new technology. I got these for 270 each. Two are still running so even with one down I feel like I got decent value. If this had happened with something I spent thousands on, I would be a much unhappier camper. As it is, I feel like I got to try LEDs without breaking the bank.
I'm pretty good with electronics, I may open it up and see if I can fix it myself if I get some spare time (not likely, hehe).
Unless you're talking about a really large grow, you won't need thousands. In fact, used correctly, most units will pay for themselves and then some after your first grow. Also, if you consider yourself good with electronics, DIY is as cheap and viable (granted) as it is going to get.
Hey Somebody1701. As a person who has fixed his BS240s on more than one occasion I can tell you one of two things has probably happened. Either one of your drivers has died or a LED is broken and is not allowing the circuit to be completed. If you open up a BS240 you'll see 3 drivers. 2 are for the lights and are interchangeable. Just swap them and see if the lights that are out have turned on. If so it's your driver and you can probably get one from Lighthouse Hydro or Gotham Hydroponics. Easy. Otherwise it's a diode and you'll have to unscrew 10 million tiny screws and test each diode on the circuit with a multimeter. Once you find the dead one de-solder it and then just jump the circuit by soldering a wire across the gap. In actuality you should use a resistor, but that's for the pro's, no
? Then you'll have to carefully screw in those 10 million screws so they're not too tight as to make sure you don't short circuit your new soldering job against the heat-sink, frying everything. At that point you can get a replacement diode or let it run like that. 
Now that I've opened this thing up and seen how simple it is, I could see building one myself.IF Blackstars lasted, they would be value but it seems that typically don't...as often as people post about burned out fixtures anyway.There are many fly-by-night LED companies that's for sure but there are some which are more than a person and a soldering iron. Kessil - part of a multimillion dollar corporation with real engineers and botanists on staff - is one of them and for $271 you can get 90 watts of good LED that will last...or will be replaced by the company. I'm not affiliated in any way and there are a couple of others which are stable. A few extra dollars and you can get something that works well and lasts.
Of course, if you have the knowhow to fix a Blackstar build a fixture for yourself and get top brand top bin LEDs, drivers and heatsinks and you will have fixtures that should give good service for years. I'm going to be building a few fixtures here soon. Boxes have started arriving!
Check out http://www.compare-led-grow-lights.com/. A few companies have 2+ year warranties. Advanced LED, Black Dog LED, grow LED Hydro...
Very simple device. That's the hidden beauty of BS's and cheap Chinese panels. With a little effort, some money, (and a bagful of those little screws in the case of BS's
), you can keep them running forever. Just don't bust the PCB, though that is replaceable too I bet. Sheeet, let's face it, Blackstar IS the Volkswagen Beetle of the LED grow world! LOL
