How to repair the LCD TV three-in-one motherboard:

LCD TV three-in-one motherboard regulations, the whole machine for one year, the main components for three years. How to distinguish between main and complete / those are not the main components / integrated circuit boards such as LCD TVs. There is no power light indication at boot, there is no reaction, so it can not be turned on normally. Is this a whole machine or a main component? The product manual should explain this. In addition, according to the provisions of the "Regulations on the Responsibility of the Return of Some Commodities for Repairs and Replacement", the "Special Commodity Catalogue for the Implementation of the Three Guarantees", the picture tube, the line output transformer, the tuner, and the integrated circuit are the main components. Others should be non-main components. There is no power light indication at boot, there is no reaction, so it can not be turned on normally. This is a whole machine problem or a major component problem, and should be determined according to the specific situation. In the case of major components, the three-year warranty period applies; if it is not a major component, the one-year warranty period applies.