This is one of the most mis-diagnosed LED problems on this specific TV. Quite often it's the connections BETWEEN the two LED strips per row. With all of the thermal cycling, and the LED strips stretching and shrinking due to the thermal cycles, those cheap little connectors get worn out and oxidized. I fixed every dead LED strip on mine for FREE with this method. Some people try to clean the connectors so they work, but that's a big mistake - because they are already damaged. The best fix is to bypass the connectors by soldering 22-24awg solid wires in place of those connectors... without taking the LED strips out. No, this is not a simple fix... it requires nearly as much disassembly as replacing the LED strips, but it is permanent. BTW, brand new LED strips will likely do the same thing. It's best to get a TV LED Backlight tester on Amazon... under $20, then you can know for sure if they are bad or not.

Here's my take on this (from personal experience)... The speaker most likely isn't "blown", and they don't use paper cones... read on... The reason it's usually the TOP speaker that buzzes (in my case) is that it's the one at the bottom of my pocket when I carry it there (as most of us do). This puts that speaker right where most of the "gunk" sits in my pockets... and therefore that speaker is far more prone to gathering the loose stuff through its speaker grill. Since the speakers use very strong magnets (in order to produce loud sounds), they attract any tiny bits & pieces of ferrous metal... which get stuck to the speaker diaphram, and buzzes. (mine was so bad that I could not understand people at ALL when receiving phone calls... and gave up long ago on listening to music through the internal speakers) Here's what I did, and it seems to have worked... 1) Download an Audio Signal Generator app - I use "Audio Test Tone Generator". It allows you to output a pure tone through your speakers to determine if...

I realize this was an old topic, but for all those who find it these days... The 2013 Nexus 7 DOES INDEED support the 4-pole stereo headphone/microphone standard used by all modern Android devices. I verified it to be certain using my "Beats" mobile phone headset that came with my HTC One, and I get Stereo Audio, and the headset microphone over-rides the N7's internal microphones. Also... the pushbutton on the headphone cord also works... in music player it's a Pause, other apps may use it differently.