Electronics > Repair

Is this pcb board screwed? Blew a capacitor on this analytical balance scale.

<< < (3/6) > >>

artvandalai:
I removed the capacitor and there seems to be continuity to the components down the board from the power plug

inse:
Sorry, I didn’t get it… Is the power supply input shorted?
Then remove the SMPS chip on the right side of the transformer

wraper:

--- Quote from: u666sa on December 24, 2024, 03:03:04 am ---Several things look suspect on this board.

--- End quote ---
IC is suspicious. But those are just flux residues from hand soldering around the transformer.

DaJMasta:
There look to be some singed vias lower right of the cluster of capacitors, haven't seen that before, maybe it's a figment of the lighting.  It's entirely possible something else is a problem, but the capacitor is the place to start.

If you have a lab power supply, remove the cap and connect the power supply with a severely limited current (100-200mA maybe) and check for heating of parts, that could be done before a replacement is available.  If you've got a parts bin with a somewhat comparably rated capacitor, you could put it in temporarily and see if it comes back to life.

artvandalai:
Will any 100 µF 40 V aluminum electrolytic radial capacitors be compatible? Im unable to find a similar capacitor on digikey or mouser.

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