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W/U系列是康佳2004年推向市场的两种高档“背投”(影)彩电机心,其中W系列有:BT4390W、BT5090W、BT5688W、BT4688W和BT40%W等机型;U系列是W系列的派生机型,主要有:BT4370U、BT4690U、BT5390U等,与W系列相比,U系列没有画中画功能,其他开关电源、行场扫描、会聚、视频/音频处理、逐行变换等功能电路完全相同。下面以BT4688W(46英寸)“背投”彩电机型为例,介绍W/U两大系列“背投”彩电电源原理与检修。
W / U series are two high-end “rear projection” (video) color TV motor cores that Konka introduced to the market in 2004. The W series includes the models BT4390W, BT5090W, BT5688W, BT4688W and BT40% W; Is a derivative of the W series models are: BT4370U, BT4690U, BT5390U, etc., compared with the W series, the U series does not have picture in picture function, other switching power supply, field scanning, convergence, video / audio processing, And other functional circuits are identical. The following BT4688W (46 inch) “rear projection ” TV model, for example, introduces W / U two series “rear projection ” TV power principle and maintenance.