I bought this tablet off eBay a year and a half ago, and unless it's gone unnoticed since then, only last night did I notice some sort of coil whine. It's coming from around the rear-facing camera, and the pitch changes depending how bright the screen is. I've learned that on PCs the best cure is prevention, so is that the case here, that I can either deal with it or get a new one, or what can be done to fix it? I've already taken it apart to replace the USB port, so if it's just replacing a part, that's trivial
