them unless you absolutely know what you're doing this particular one has been discharged and we know that there's no charge left in this thing at all the modular connectors have no filtering around them which uh usually on power supplies you're going to see a few filtering caps around here but in this case they chose to put the filtering caps all on the main pcb if we look at where the power comes in the emi transient filter is pretty normal nothing too crazy going on here there is one thing that is missing on this section generally in addition to having a fuse here for voltage protection there's what's called an mov or a metal oxide varistor and there is not one on this psu which means that if you happen to get voltage surges then your psu could could go out and possibly parts inside your computer could be affected as well so if you are using this unit we do recommend that you get a surge protector or a ups unit which that's just good practice anyway as we go past the filter we hit the rectifiers here these turn the ac to dc for us and then from the rectifiers we go to the active power factor correction area over here in the active power factor correction area we have a couple of caps here and these caps are by cap exxon get a little shot of that right there these guys are NUMBER_TOKEN microfarad NUMBER_TOKEN volt and there's a pair of them here so we get microfarad total um not not exactly super strong for bolt caps could have probably done a little bit more but what we're going to see as we go through this thing is that they've they've kind of bargain selected some of the components as we move from the apfc we then go back to the other side of this thing and just inside between the transformer and on the inside of this heatsink you can see there is a what looks like a diode or in this case it's a transistor and there's a pair of them there these guys are set up in what's called a double forward converter configuration usually what we're used to seeing is an llc converter for this part of the power supply and this double forward is known to be less efficient and again we're going to see that when we look at the numbers on efficiency in just a minute as we go across from there we get the main transformer the transformer then uh dumps us over to the rectification for the outputs and uh we have the NUMBER_TOKEN volt rectification and then over here on this little board we've got NUMBER_TOKEN volt and NUMBER_TOKEN volt rectification and then we have output filtering caps all around the area here the output filtering caps are from a company named jsh for these conductive polymers and we couldn't find any information on those at all um and then we found some asia x capacitors here and here uh there are four of the taller ones and two of the smaller ones the asia x caps like other components aren't the best for for uh selection and then if we look at the NUMBER_TOKEN volt and the NUMBER_TOKEN volt we run into a brand named x-con and then i don't know if we can even get down this there's a another one in addition to this solid polymer cap there are there are four like this one on the
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