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例2:东芝2980DH 彩电,光栅和图像颜色偏绿。特别是在画面内容变暗时更为明显。分析与检修:从故障现象看,这是典型的白平衡失调。对于一般彩电来说,重新调整视放板上的三个截止电位器和两个激励电位器就可以了。现在的新型彩电都是 I~2C 总线控制,在视放板上不设可调电阻,调整白平衡时,按照特定的方法进入总线数据调整状态后,对相关数据进行调整即可。虽然不难,但比较麻烦,也不容易调好。
Example 2: Toshiba 2980DH color TV, raster and image color is greenish. Especially when the screen is darker when the content is more obvious. Analysis and Maintenance: From the breakdown of view, this is a typical white balance disorders. For the general color TV, readjustment board on the three cut-off potentiometer and two excitation potentiometer on it. Now the new color TV are I ~ 2C bus control, the board does not set adjustable resistance, adjust the white balance, according to a specific method to enter the bus data to adjust the status, the data can be adjusted. Although not difficult, but more troublesome, it is not easy to adjust well.