本文的视放电压是指供末级视放的电压,一般为180～190V。视放电压有两种供给方式:一种是由开关电源供给;另一种是由行输出变压器供给。一、视放电压由开关电源供给,滤波电容变值引起的故障 1.电容容量减小、消失或轻微漏电,故障表现为伴音正常,图像基本正常,只是在正常图像上 The voltage drop of this article refers to the voltage for the last video, usually 180 ~ 190V. As there are two ways to supply voltage: one is supplied by switching power supply and the other is supplied by line output transformer. First, depending on the voltage from the switching power supply, the filter capacitor changes caused by the fault 1. Capacitance decreased, disappeared or slight leakage, fault performance was normal sound, the image is normal, but in the normal image