White self-taught chip-level maintenance is very difficult, if there is no master, basically the chance of self-study success is zero. Chip-level maintenance is a type of technical service that requires a particularly high level, such as: We use the computer motherboard above the various working circuits, hard disk control circuit, notebook keyboard, power circuit, display control circuit board inside the chip replacement, also includes some I\/O chip, sound card chip, boot chip, capacitor, and resistance and other electronic components repair and replacement.