I bought my hlg 260 xl a year ago( almost exactly) and I noticed one of my led boards going bad , so when I saw my lights flickering a Lil i assumed it was that board . Fast forward to after I switched out the boards plug it in and go hmm it’s a Lil dimmer in here then it should be. Unplugged my 300 rspec tested the dimmer no change, flipped the driver and tested the manual dim works fine. So I replaced the dimmer and besides a momentary heart attack from the light not turning on until I turned it up it now works 10x better
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Yeah it’s an adjustable resistor. They can only sweep so many times before the contacts become less reliable. That’s another reason why some pots cost much more than others. Also a good reason to have a kill-a-watt meter.
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