I have 2 550 r specs that randomly stopped working. Not at the same time mind you but withing weeks of each other. Both worked brilliantly for a full run and have crapped the bed early. I have a feeling I bought a set from a bad batch. If anyone has any info that might help me get these repaired I’d greatly appreciate it. Cant afford 2 more of these pricey bastards
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That sucks, sorry for your trouble. If you only got one run out of them I would contact HLG, they have a great service department and they should still be well within their warranty period.
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Their customer service is pretty top notch from what I understand, I would start with them.
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If you’re the first owner hlg should take care of you. If you bought them secondhand… maybe the drivers went out 
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Happened to one of my HLG135 and the repairmen told me it was just one of the cable connections I made 
to the Mean Well driver was lost, check all of them just in case … 
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Checked all my connects. All good. I am first owner on both lamps so fingers crossed with support. Appreciate everyone’s comments
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I’d be surprised if HLG didn’t replace these
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If you have a multimeter I would check input and output voltage of the drivers.
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Actually just got a response from support. They will be replacing them. Thanks for all the advice. I guess this is a known issue with thr 550 and meanwell driver
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That’s awesome to hear!
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Your telling me lol leds aren’t cheap. I could outfit my entire room with hps for the cost of 2 of these lamps
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I lost the hanger kit for my Rspec and ordered a new kit from them, I paid a few bucks but had it asap along with plenty of swag…
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Figured they would take care of you, HLG has great customer service. For the money they ask they really should too, lol
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I’m glad they are taking care of you!
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I just got my tracking number and new drivers are in the mail and in progress. I went ahead and bought a couple and they offered a good discount on a new 600rspec so i have that coming too. . Fkn solid people
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I’m definitely gonna keep hlg my go to. Hps too expensive, cmh not enough intensity unless you’re running de or 630s. And that’s basically like running hps. Full on led for me.
Outstanding, you’ll love the 600R… that’s what I’m running in my 4x4. On the first grow with it.
Have an internet buddy who I talk to offline frequently, he works for HLG. They offered me a light in exchange for a grow and show on another forum. It is a much smaller light but I was so impressed with it that I invested in the 600Rspec.
This bud is currently under 2x 100Rspec’s in a 3x3.
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That’s so dope. I have a 100 v2 in the tent as well for added coverage
Carmelita by exotic genetix
Under an hlg 550 r and 2 315 cmh. And I have a 100 v2 in there on the opposite end of the cmh
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Nice man, I love my 600 Rspec with UV bar attachment. Been running Mars 650w and 800w bar lights the last few runs though. Still love my HLG
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I was checking out the uv bar. Have you noticed any improvement in trichome / terpene production with it?
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