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机型:长虹 D2116A(TDA8361单片机)彩电故障现象:有时能开机,有时不能开机,有时开不起机时,用手轻轻一拍,电视机又能正常工作了。分析与检修:根据用户反映的情况,笔者通电试机,电视机工作不正常“三无”,有微弱的“吱吱”声,轻轻拍电视机又能正常工作了。故笔者怀疑,可能有元件与电路板接触不良。将电视机后盖打开,对有关的电路焊点做仔细查看,未发现问题,但仍对电源和行部
Model: Changhong D2116A (TDA8361 SCM) Color TV Fault phenomenon: sometimes can boot, and sometimes can not boot, and sometimes can not afford to open the machine, gently tap the hand, the TV can work properly. Analysis and Overhaul: According to the situation reflected by the user, the author turns on the test machine, the TV works abnormally “three noes”, there is a weak “creak” sound, gently pat the TV and can work normally. Therefore, I suspect that there may be components and poor contact with the circuit board. Open the rear cover of the TV, do a careful look at the relevant circuit pads, did not find the problem, but still on the power and the Department of