自家的足浴盆震动原件坏了尝试修没修好请大家指教维修要点和电路原理！谢谢

kdh2002

昨天从京东上买来给母亲用的足浴盆冒烟了。由于过了保修期，所以就自己打开了，想看看能不能修好

打开后发现震动部分的原件损坏了，那个好像电阻的原件掉了下来。然后自己就用导线把这个原件焊回了原来的地方，但是合开关一测试当时就短路了。所以我就感觉实在无能为力了。所以想在这里请大家帮助一下，教我这个电路的原理，维修时怎么用万用表测量？测量哪里呢？还有那些电子元件都是什么作用呢？能不能直接接直流电路驱动呢？请大家多教教我，谢谢了！

电子原件型号 1 5w100RJ 2 l7812cv ccdjp vb MAR 80b

其他两种是整流二极管和电容还有小马达对吧 电容有一个看上去也不太好了，还有那个电阻似的原件为什么会好好的自己掉下来呢



这两样不懂， 其他两种是整流二极管和电容还有小马达对吧

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kdh2002

请几位老师给我讲解一下这个电路的原理好吗？求助

深夜幽灵

我是新来的！刚刚看到你机器的故障！不知道现在解决了没有！

建议检查：1、三极管是否被击穿。2、电机是否短路。3、电容鼓包跟整流管有关系！4、看看限压电阻的阻值有没有变化！

就几个元件，你可以注意的检查测量!

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hclyj

那个电容也要换掉，看你电路板上的布线都烧掉了的情况，估计整流二极管也有坏的，全测试一下，然后先测一下7812的输入和输出端电压是否正常。如果你一再通电还是不行的话，可能是电机线圈有短路的，换个电机试试。

kdh2002

谢谢楼上的老师，但是我拆开那个足浴盆时就发现这个电阻脱落了，我只是把断了的脚接了段铜线后焊接到背面同样的位置上去了，电阻不是没极性的吗？怎么还短路了呢？是不是二极管整流那部分坏了呢？请教我能不能不加电测量好坏啊？还有那个电机是几伏电压的啊？我能不能外接个直流变压器直接供电呢？请教，请教！

弱电初学者

[quote user="kdh2002"]请问，我拆开足浴盆就看见这个电阻脱落了，按照原位置焊上去的可是却短路了，我应该不加电怎么测量呢？是不是整流那块也有问题了，还有电容看上去有一个鼓了出来点黑色胶质一样的东西。请教，请教我现在该怎样修理？[/quote] 电阻可以在断开一端后,直接用"万用表电阻"档测量其阻值. 如果阻值约100Ω

左右,则正常. 此电阻应该是起阻流/降压作用. 如果正确接入此电阻后烧线路板,则说明后级有短路存在.(您的接入可能是错误的,造成烧线路板).

整流块L7812是否有问题很容易判断,只须测量其输入/输出脚电压即可得知.

电容鼓包后必须更换,否则有可能使电路存在滤波失效或短路.