A method and structure for a chip detach apparatus and method that limits the solder ball maximum shear rate and, more particularly, that delays the application of shear force until a minimum predefined temperature is reached. The measuring unit measures the electrical parameter. When a diagnostic server of the service center analyzes the sound signal of the home appliance, it selects a plurality of preamble candidates and can effectively and correctly detect data using weights, so that it can quickly diagnose a faulty operation of the home appliance. Such measures of hemodynamic performance are preferably relative measures, but can alternatively be absolute measures.