Thing has served me well, and it's had little problems. Until recently. I'm having the old backlight won't turn on when woken up or turned on problem. It takes a minute or so, but it's concerning. I've tried the SMC reset, the Command reset, same result. It works, but it doesn't work long term. When I wake it up or turn it on, I can see everything, just that it's dark. And the brightness keys do not work. Considering taking it to Apple store if it's a problem that can't be fixed at home. Won't be surprised as the computer is seven years old, but this is a concern and an annoyance. Anyone know what it might be? Thanks in advance.