论文部分内容阅读
一、高压板与黑屏故障的维修液晶彩电高压板(也称逆变器、背光电源等)电路故障率较高,由于此部分电路元器件布局紧凑,许多元件采用的是双面安装,因此查找具体元件或走线都比较困难;对于高压板的维修,既可以采用更换单个故障元件的方法来维修,也可以采用更换整板的方法进行维修,即所谓板级维修。1.高压逆变电路与黑屏故障现象的判断
First, the high voltage board and black screen fault repair LCD color TV high voltage board (also known as inverter, backlight power supply, etc.) circuit failure rate is high, due to the layout of this part of the circuit components are compact, many components using double-sided installation, so find Specific components or alignment are more difficult; for the maintenance of high-pressure plate, either by replacing a single faulty component to repair, you can also use the replacement of the entire board method for maintenance, the so-called board-level maintenance. 1. High-voltage inverter circuit and black screen to determine the phenomenon of failure