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飞利浦CT0—93彩电一年前经加装M9081G遥控器使用一直良好,在正常收看时突然伴音消失,并5分钟后自动关机。其有关电路见图1所示。检修先测CTV222S(34)脚电压为0.6V,关机断开(34)脚外围元件,在该脚与主控板+5V间加接15kΩ电阻,以使该脚获得固定的4.2V电压,开机固定电压能加上,仍无伴音
Philips CT0-93 color TV a year ago by the installation of M9081G remote control has been good, suddenly disappeared in normal watching, and automatically shut down after 5 minutes. The circuit shown in Figure 1. Overhaul first test CTV222S (34) pin voltage is 0.6V, turn off the (34) pin peripheral components, plus 15kΩ resistor between the pin and the main control board +5 V, so that the pin get a fixed 4.2V voltage, the boot Fixed voltage can be added, still no sound