2014年买的三星pdp等离子电视机第一次开机有声音无画面,第二次开机就正常了,是为什么?

2024-12-02 22:03:10
推荐回答(1个)
回答1:

问题分解:
一,由于电视机受潮,导致启动后颜色较暗,所以要隔很久才能看见图像,其实已经启动了。有时是先出声音再出图像,有时图像出来了也模糊,过一阵才清晰。
二,由于是高压包接显像管处的高压帽受潮,所以才有杂音,并且在正常启动后,仍然有打火声。因为此处工作电压高达数万伏,高压包受潮后漏电发出声响。
三,维修人员之所以说要回去修,并不是因为他看不出来。而是因为你想黑你,拿回去,你看不到他的整过维修过程,好收钱。这是一个最简单的问题。
维修方案:
一,把电视机拆开,用一根万用表笔,一端接电视机地线,一端插入高压帽内放电。“啪”的一声后,放电完毕,取下高压帽,将其拆下换点。(一块钱一个)
二,用医用酒精蘸在卫生纸上将显像管高压帽接口处灰尘清洗,涂上高压硅脂(三块钱一只),提高密封性。之所以用医用酒精是因为它的酒精含精高,易风干,含水量只有5%,并且不带腐蚀性。
三,用电吹风将接口处吹干,将换后的高压帽盖上。然后装上电视机后壳开机即可。
开始可能仍有细微的杂音,属正常现象,待高压硅脂略干后,即可消失。
以上维修方法,建议由专业人士操作完成。收费不应高于三十元。

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