Worst of all, connectors get loose as a result of vibration, causing intermittent failures (e.g. only when you hit the key).
(connectors; get; loose; as a result of vibration) (connectors; causing; intermittent failures (e.g. only when you hit the key)
connectors connectors
get causing
loose as a result of vibration
intermittent failures (e.g. only when you hit the key