[例1]康佳PDP4218彩电,图像、声音都正常,但有较响的交流声。分析与维修:开始认为是电源板的某个变压器噪声,但仔细检查整块电源板都无异常,且电源板的噪声并不严重。仔细聆听噪声来源,发现好像来自Y板(扫描板),且似乎很靠近屏幕。正好手边有正常的Y板,换上一试,一切正常。本来的较响的交流声立刻消失,故障排除。 [Example 1] Konka PDP4218 color TV, images, sounds are normal, but the sound of louder sound. Analysis and Repair: Began to think of a transformer board power noise, but a thorough examination of the entire power board without exception, and the power board noise is not serious. Listen closely to the source of the noise and find that it appears to come from a Y plate (pan) and appears to be very close to the screen. Just hand on the normal Y plate, put on a try, everything is normal. The original sounded more loud noise disappears, troubleshooting.