I got my 24V 15A Sopudar SPD-360W SMPS from Amazon today. I noticed that it didn’t have a hi-pot sticker like I’m used to seeing, which got me wondering about the quality.
I opened it up - and I’m glad I did! Four things jumped out at me, but there may be others.
One lead of the BR is almost touching its heatsink. Fortunately (!), the heat sink is not fastened to the PCB or grounded.
The PCB has 5 screw holes; only 2 are used. Four of the heatsinked semiconductors seem to be substituting for the missing screws, but of course this places additional mechanical stress on the devices.
There is what appears to be a thermistor (identified as NTC3) pressed against the transformer, but it isn’t glued in place.
There is a fuse, but it is soldered in.
The board is marked “12V 30A”, but I think this is to denote a diode that is necessary for operation at 30A but not 15A. I will find out whether it’s the correct voltage when I power it up.
edit: clarification on heatsinks