I hope I get some help here about power supply 20A 12V.
When I get it, it worked ok than suddenly something blows up but it was not overloaded because it was less than 1A load on it.
When I dissasembled it I see it was one leg of power mosfet badly soldered and I think this cause blow up.
Below in picture is in red circle what was damaged and I changed it. Also power mosfet STW12NK90Z.
Problem now is because mosfet is hot even when nothing is connected to 12V.
If I connect some load on it it starts to overheat badly.
What can be wrong, some advice is really appreciated,
When I get it, it worked ok than suddenly something blows up but it was not overloaded because it was less than 1A load on it.
When I dissasembled it I see it was one leg of power mosfet badly soldered and I think this cause blow up.
Below in picture is in red circle what was damaged and I changed it. Also power mosfet STW12NK90Z.
Problem now is because mosfet is hot even when nothing is connected to 12V.
If I connect some load on it it starts to overheat badly.
What can be wrong, some advice is really appreciated,
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