维修园地彩电故障检修五例例１：罗兰士ＩＴＴ３３０４型２０英寸彩电，正常收看中机壳内突然打火，光栅、伴音随之消失，只有吱吱声。分析检修：从光栅、伴音全无分析，可以确定是行输出级工作不正常。因为高、中频通道、亮度、色度、伴音通道的供电电压和显象管所需的各... Maintenance Park TV troubleshooting five cases Example 1: Roland ITT3304 20-inch color TV, the normal watch in the case of a sudden fire, grating, accompanied by the disappearance of sound, only the squeak. Analysis and Maintenance: From the grating, no analysis of sound, you can determine the line output level is not working properly. Because of high, medium frequency channel, brightness, color, audio channel supply voltage and kinescope each ...