Repair of an old laptop, the technician uses a small knife to remove the CTRL key

laptop repair old laptop technician ctrl key removal small knife hardware repair servicing maintenance device keyboard disassembly repair tools precision work technical skills keycap component inspection diagnostic circuitry connectors intricate work device handling keycap removal laptop maintenance 60fps slowmo typist button typing writing computer keyboard mechanical keyboard membrane keyboard backlighting numeric keypad arrow keys function keys multimedia keys keypress keys fingers speed accuracy touch typing words per minute typing practice typing speed test moment