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How to repair a three-in-one motherboard in an LCD TV
2025.09.21
How to repair the motherboard of a three-in-one LCD TV:
The warranty period for the motherboard of a three-in-one LCD TV is one year for the entire unit and three years for major components. How to distinguish between major and minor components/non-major components/such as the integrated circuit board of the LCD TV. If the power indicator light does not illuminate and there is no response, preventing normal power-on, is this a problem with the entire unit or a major component? The product manual should explain this. Furthermore, according to the "List of Some Commodities Subject to Three Guarantees" in the appendix of the "Regulations on Repair, Replacement and Return of Some Commodities," the picture tube, horizontal output transformer, tuner, and integrated circuits are considered major components. Others are considered non-major components. Whether the lack of a power indicator light and the lack of response during power-on constitute a problem with the entire unit or a major component depends on the specific circumstances. If the problem is caused by a major component, a three-year warranty applies; if it is caused by a non-major component, a one-year warranty applies.
