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It's a blank white screen (although with a blue tint, certainly from the backlight). I've kept the screen on for long periods of time with both 5v and 3.3v voltages, and have found that it generates a lot of heat when give 5v, therefore it must be meant for 3.3v, as it resists the excess power. The document on it that the seller sent confirms this, and also says that the driver is an ILI9341, so I've had little reason to doubt that. I think that I'll try seeing the output when using an ILI9340 driver next. Besides that, are there any other things I might be doing wrong?
I've been having this exact same problem (the output is exactly identical as well). I've used both 3.3v power (from an Arduino Mini) and 5v power (from an Arduino Uno), but neither have worked. Any advice on where to go from here?
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