长虹彩电采用飞利蒲单片集成电路OM8361(OM8362)的系列机型很多,市场拥有量较大,且已陆续进入维修期。OM8361的(38)脚既是行逆程脉冲输入端,又是沙堡脉冲形成端,一旦(38)脚沙堡脉冲出现异常,则会出现无光栅、无色彩等一系列故障现象,且不易判断故障部位。笔者曾先后检修过几十台此类故障的飞利蒲单片机,发现可用稍调高加速极电位器,观察屏 Changhong TV with Philips IC OM8361 monolithic integrated circuit (OM8362) a lot of models, the market has a larger volume, and have gradually entered the maintenance period. OM8361 (38) feet both reverse pulse input, but also the formation of sand pulse port, once the (38) foot sand castle pulse abnormalities, there will be no grating, no color and a series of failures, and not easy to judge Fault location. The author has successively overhaul dozens of such failures Philips one-chip computer and found that available slightly higher acceleration pole potentiometer, the observation screen