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1.触喇叭网有麻电感机型:长虹54cm彩电。故障现象:图像、伴音及各操作均正常,但手触及喇叭金属网时有麻电感觉。故障分析:喇叭两端引入的是音频信号,其电压值不足使人产生麻电感觉。麻电感觉通常是感应电压引起的。检修:打开电视机外壳,用砂纸将喇叭金属网内侧一小部分打磨得露出金属本色,用一导线将外露的全属部分与主板冷地连接好,故障排除。检修提示:对于采用串联型开关电源的机型,不能采用这种方法,因为这种机型开关电源的主板上
1. touch horn network has Ma inductive model: Changhong 54cm color TV. Symptoms: images, sound and the operation are normal, but the hands touched the metal mesh horn feel. Failure Analysis: Speaker at both ends of the introduction of the audio signal, the voltage value of less than people feel numb. Ma feel like induction voltage is usually caused. Overhaul: Open the TV shell, with a sandpaper to a small part of the inside of the horn metal ground to reveal the metal color, with a wire will be exposed all the parts of the motherboard cold connection, troubleshooting. Maintenance Tip: For series switching power supply models, can not use this method, because this type of switching power supply on the motherboard