Abstract
In this study, TRIZ theory and tools for analysis and problem-solving techniques applied to LCD TV speaker of product failure analysis and problem solving. Its problems include low resonance frequency (Lowest Resonance Frequency; fo) high, hit T-Yoke produced noise, etc., by this systematic analysis process to identify the exact problem, use the TRIZ tool to identify problems, for fo problem, produce 48 concept solution, for noise, produce 49 concept solution, supplemented by Platts matrix (Pugh Matrix) to select and integrate to get the optimal solution concept, the optimal solution of the final concept validation. Part of the solution concept fo high elastic wave join softeners, iron and voice coil hit T abnormal noise generated by the concept of the solution above the washer -T iron surface, so that the magnets do uneven distribution of magnetic field lines, to prevent the coil hit T iron, the concept solution combines the two, so that's fo can reduce, but also to prevent the voice coil to prevent abnormal noise impacts generated by T iron. Different sound solution concept hit part of the voice coil to coil T iron produced the same length, the double voice coil four variants of the concept of solution can solve the problem. In response to these two problems can be accessed via TRIZ tools to find answers.