Question The D key on my keyboard sometimes won't register?

[Nevis]

I have a rakk lam ang lite keyboard which uses outemu red switches and sometimes the D key wont register a long press, either I have to double tap it or the key press only registers after 3 seconds of pressing it down

 

[hang-the-9]

No much here to really check on, you can try to solder in a new switch or remove it, take it apart and make sure it's clean.

 

[ragnarok0274]

There could be something stuck under the key.