Right after purchase · Before a used-device deal

5-Minute Full Check

Run each test from top to bottom and mark the result. Progress is stored temporarily in this browser only.

Check Progress0 / 6 complete

OK0

Issue Found0

Unchecked6

Check major keys and simultaneous input

Check buttons, wheel, and double-click anomalies

Check pixel defects with fullscreen solid colors

Check left/right channels and output

Check input level and waveform

Check video input and resolution