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Am I crazy, or can I hear coil whine when the backlight is at full tilt? Especially when using the right USB port. Whatever it is it seems to be power related since it comes from whatever side is plugged in. If i turn the backlight off or down it goes away. I'm guessing it's something related to the refreshing of the LEDs?
Much more usable now that I have flashed a firmware where I can toggle the LEDs.
Wow just tested it and yes you are right. Didn't noticed it until you said.
So I did some listening and... You are correct my friend. It is not that big of a deal to me but it is audible if your ear are 0-3 inches near it with max brightness. What I've noticed is that the coil whine changes with different color. purple is the start of the sound where it have the high pitch and then to yellow where it starts to low pitch and then to green where it goes just about back up mid way of low and high pitch and then blue where the whine stops. All colors are listened from the right of the keyboard where the up arrow key is at and also plugged in the right. Coil whine is constant if you stop at a certain color but I've noticed blue(or maybe purple) is where the sound stops just right before it enters back into the whine.
I think it also has to do with how sensitive you are to high frequencies. I don't think it's that bad, nothing like a CRT or anything, but I heard it from about 6-8ft away in a quiet room. It's only that bad on one side though. I don't expect a fix or anything, but it's something I:C should look at when they are doing their next PCBs.
I doubt you'd had that good of sensitivity but then again I may be wrong. Either you're in a isolated room with foam noise cancellation or your keyboard is just really loud with the whine. I have traffic, a clock that ticks, fans on my computer so can't confirm how far I can hear the whine in a "quiet" environment. Well, one feet or two feet is probably comprehensible with good hearing but 6-8 feet away... That's stretching it for a distance of what I would call regular whine and more of a defect whine.
I definitely hear the whine when I crank up the brightness.
It doesn't appear that bad if I keep it at the bottom 2-3 brightness levels, but once you get past that part it becomes more and more noticeable