led

Repair log of Cherry MX2.0S RGB keyboard lighting failure after more than 3 years

This Cherry keyboard was bought by the blogger in April 2022 during a flash sale on JD.com, a red‑switch RGB keyboard, and has been used at the office ever since. In today’s era of domestic mechanical keyboards flooding the market, the MX2.0S doesn’t seem to have much special apart from the “Cherry” name. However, after using it for years I still feel it’s quite good, especially the layout. The shortcut keys in the upper right corner—calculator, media play, previous track, next track—are very practical. By comparison, the layout of the Durgod K310 RGB at home (which I bought earlier than the Cherry) is not as convenient.

Recently I noticed that the backlight of the PAUSE, PAGE UP, and C keys stayed constantly red. At first I thought it was a misconfigured lighting effect, so I tried installing the driver (yes, I had never installed Cherry’s driver in all these years), and also tried FN+PAUSE reset. None of this worked, so I realized it might be a hardware fault (the photo below is blurry but you can barely see the three keys stuck on red 😂).

On April 26, 2026, another group of LEDs showed the same fault, so I added a clearer photo of the symptom (the durability of MX2.0S LEDs is really poor):

During the October holiday, I took the keyboard home to disassemble and study it (and cleaned it up—after 3 years the ABS keycaps of frequently used keys are shiny with wear, and the inside was full of “treasures” accumulated over the years 😂).

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