怎样更换电视机主板

2025-04-06 14:17:39
推荐回答(2个)
回答1:

首先你要具备一定的电子和无线电常识,懂得怎么连接电源线、按键板接线、还有喇叭线及av输入端子线!把显像管的偏转线圈的插头按行场线圈的引脚顺序插在主板的插座上,注意不能插错!还要把显像管上的那根接地线接在显像管尾板上的地线引脚上;所有引线全部连接妥当后检查核对无误后才能开机试用,如果图像上下幅度(场幅度)不足或者是太大,还要进入总线进行调整。进总线的方法在主板的说明书上都有!如果行幅度(左右)太大或者是不足,就把行偏转线圈的那个单独的红插头调整位置插在另外的行偏转插座引脚上,看哪个引脚幅度合适就插在哪个引脚上!行场幅度调整合适了再看看亮度是否合适,如果不合适可以先调整一下高压包上的那个加速极调整钮,以不出现白色的横线为止。我的建议,如果你对无线电知识不太懂,还是找专业人员换主板吧!弄出问题来会得不偿失的!

回答2:

要是DIY自修的,建议你别自己弄了,还是找专业维修的吧
这个需要专业的一些水平知识的,有些电视是需要轻微改装一下才能可以的,万能板上的几个行偏转接头与原机的行偏转线圈偏转阻值和逆程电容容量参数不匹配接头插不对和有些电视机场偏转线圈还要从新改下,要是参数不对还会把主板烧了,要是装上了有些电视的图像还会出现不正常,需要进总线调整的。

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