Things like the light above the logo, the dust under the screen, the scratched buttons, and perhaps even the flickering screen are all details I think many of us can give a pass, but the buzzing and the very mediocre sound coming from the unit is really not acceptable, it's a distraction and significantly harms the experience.

I find I get better sound by putting thick cotton pads on the two speakers to soften the sound, it also reduces the buzz, not a definite solution but it improves things a little.