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旧彩电价格往往不到同规格新彩电的一半,这些彩电虽然各种输入、输出端子齐全,试机时也感觉效果不错,但是仍存在不少问题。具体表现在以下几个方面: 制式问题日本用NTSC制式,而我国彩电制式为PAL制,NTSC制式的彩电接收PAL信号需要改动电路,有的改制不完全,就出现了一些频道是PAL制,而另一些频道却是NTSC制的情况。另外,市面上的这类彩电绝大部分经过改制,改制质量差,有偏色、色彩暗淡等毛病。当按下“制式呼出钮”时,在电视机的右上角会同时出现频道“PAL”或“NTSC”字样。打磨显像管这些彩电大都没有包装,在运输过程中不少彩电的外壳、显像管表现会有划痕。彩电的外壳用胶水粘合,显像管表面的伤痕过去难去除,但现
Old TV prices are often less than half of the same specifications with the new color TV, although these TV input and output terminals are complete, the test machine also feels good, but there are still many problems. Specific performance in the following areas: Japan’s NTSC standard system, while China’s TV system for the PAL system, NTSC TV receiver PAL signal needs to change the circuit, and some restructuring is not complete, there are some channels are PAL system, and Other channels are the NTSC system. In addition, most of the color TV sets on the market after restructuring, restructuring poor quality, partial color, color bleak and other problems. When you press “System call button”, the channel “PAL” or “NTSC” appears at the top right corner of the TV. Polished CRT Most of these TV sets are not packed, many color TV in the transport process shell, CRT performance will have scratches. Color TV shell with glue, the surface of the tube scratches the past difficult to remove, but now