On today’s You Asked: How do you safely clean a QD-OLED screen? Should you still get a 4K Blu-ray player? And how to make sure your A/V receiver isn’t messing with your picture quality … again. Jack ...

Nothing ruins your favorite show or a fun movie night quite like a smudgy, dirty TV screen. Of course, there’s more to cleaning a TV than just keeping the screen clean — especially because they’re ...