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一台日立CPT2005—42型遥控彩色电视机,每次开机时图像伴音均正常。大约两分钟后,图像上叠有闪电状亮线,空白光栅时亦如此,见图1所示。持续闪动十几次后,光栅收缩成一个碗大的彩色圆斑,仍有闪动。五六分钟后自动停机。检查分析:该现象怀疑由电源或行输出电路故障而引起,重点检查这两部分电路。
A Hitachi CPT2005-42 remote color TV, each time the boot image sound is normal. Approximately two minutes later, the image is superimposed with bright lightning lines, as is the case with blank rasters, as shown in Figure 1. Continued flashing a dozen times, the grating contraction into a large bowl of colored circles, there are still flashing. Five or six minutes after the automatic shutdown. Inspection and Analysis: This phenomenon is suspected to be caused by the failure of the power supply or the output circuit of the line, and focuses on checking the two parts of the circuit.