EEVblog #1107 - Shocking 4K BENQ Monitor Problem!

EEVblog · 97K views · 2018 · 9:57

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Electronics & circuit designRepair, teardowns & right to repairdemo

Why Hacker News recommends it

Linked whenever someone reports a monitor blacking out from static electricity, as prior art on the same problem.

What it is

Dave Jones of EEVblog investigates why a 4K BenQ monitor switches itself off, tracing it to static discharge from an office chair. He uses an oscilloscope to examine the static impulses.

Recommended by 0 HN commenters across 0 different months, 2019 to 2026.

What Hacker News said

Cites dazzawazza · 2019-01 · on “Everytime Employee 2 walks by a cubicle, one of the screens blacks out”

I posted this to reddit but I'm more likely to get a reasonable discussion on here. [this video] Dave covers "static" turning off a monitor in this video. Could it be this?

Cites grumbel · 2023-04 · on “Check if your IKEA chair is compatible with your screen”

There is an old EEVblog[1] video on the topic. Mine doesn't do it from chairs, but it regularly blacks out if I turn on the nearby LED strip. [1] [this video]

Cites deckar01 · 2026-04 · on “Fix monitor that goes black, off or blinks due to static electricity in chair”

It looks like the youtube embed is broken. It is supposed to link to a EEV blog video. It is wild how many times someone brings me broken equipment and it turns out EEV blog has already investigated the same issue for the same device. [this video]