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How to identify the damaged capacitor.

simanud
simanud
146
hace 5 años
hace 5 años
Regards. As a technician, the day would be done by taking out each non-polarized capacitor smd one by one on the plate looking for the short; When all capacitors measure short on the board, how to identify which one is damaged? Thanks in advance...!
oswaldo lizarraga
hace 5 años

Hello, it is very difficult that in a plate all the capacitors are shorted if not impossible, I would recommend that you take one or 2 of these and measure it outside the circuit and observe with a magnifying glass your code, in addition to having a diagram that I help you the circuit route.

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oswaldo lizarraga
hace 5 años
hace 5 años
Hello, always use your ohmmeter to detect shorts, you already noticed that several capacitors are not shorted but one, it also visually verifies swollen electrolytic capacitors, false welding etc.
simanud
simanud
146
hace 5 años

I know that they are not all who are short but only one that makes others measure as if they were short. (when nothing there burst or submerged not heated and all the voltages of transistors and IC is there) Then the question arose to ask for help on how to detect which of all the capacitors is the one that is really short, because we can not pass the time taking out all the capacitors.

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oswaldo lizarraga
hace 5 años

Of course I understand, you have to use criteria and make a voltage path by disconnecting some stages of its power to see which of them consumes you too much in that case you only check that part, any element such as diode, transistor or integrated can be crossed to even a resistance of surface can be lowered in value and cause low measurements, but you would already know the sector and you are going to check that place.

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faviotrochez
hace 5 años
hace 5 años
And since you know what the capacitors might be, you can check some intricate sercano is probably short since most of these components short the others
simanud
simanud
146
hace 5 años
hace 5 años
I have seen it. The IC well and its voltages. It does not heat up and when we deepened it was another short capacitor that exploded every fuse that was put on it. when removed it turned on the equipment and no longer blows fuse.

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