【摘 要】
：
一台东芝2539UH彩电,图像正常,伴音音量很小,并伴“有咔咔”的噪声。分析与检修:初步判断故障在伴音处理电路。为对故障范围作出准确判断,对该机输入DVD信号和进行音量调整试
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一台东芝2539UH彩电,图像正常,伴音音量很小,并伴“有咔咔”的噪声。分析与检修:初步判断故障在伴音处理电路。为对故障范围作出准确判断,对该机输入DVD信号和进行音量调整试验,发现不论输入DVD视频信号还是收看TV信号,声小和噪声故障同样存在,判断故障在AV/TV切换电路之后;还?
A Toshiba 2539UH color TV, the image is normal, the sound volume is very small, and with “Kaka” noise. Analysis and Maintenance: Preliminary judgment of the fault in the sound processing circuit. In order to accurately determine the scope of the fault, the machine input DVD signal and volume adjustment test and found that regardless of the input DVD video signal or watch TV signal, the same sound small and noise fault exists, to determine the fault in the AV / TV switching circuit; ?
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