松下panasonic29GF12G场幅不足 场反馈电路 R454,R462损坏松下panasonic29GF12G能正常接收电视信号,但利用AV插头输入信号时,屏幕无图像 TV/AV转换电路 IC1213(57)(58)脚电压为0V,正常为0V,4.8V,IC1213损坏 |
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