Is it possible to replace small parts on a circuit board.

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cpufford

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Hey everyone, I have never tried to do something like this before, but I have a dishwasher that stopped working. Upon inspection of the circuit board I noticed a small part that appears burnt. I have included a photo of the board. It is section R406. Is it possible for me to replace this small piece or is the board bad now that this has happened. I have a soldering iron, I would just like to know if it is possible to repair this. Thanks!

 

Is the part replaceable? Absolutely. Can YOU replace it? Maybe. Soldering, like anything else is a skill. How skilled do you need to be to replace that part? Do you even know what the part is?

And, just to make you feel worse, there's probably more than that one part that's bad. If a transistor failed and drew too much current, it could cause the resistor to overheat without the transistor showing any effect. If you've got no electronic experience, you might save yourself some grief by just buying a new board.
 
R406 is a resistor. If you carefully scrape the burnt clear coating off the top of it, you may be able to read the number. Use a good magnifying glass to work on it. Resistors are cheap. I would try it.
 

The problem was not caused by the resistor. A resistor does not burn itself! Something driving it has failed which caused the resistor to be overloaded.
First fix the cause of the overload then replace the resistor.
 

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