I got a YueLin psu for free from my friend, and this is the same psu from the bargain basement roundup on jonnyguru that did 350W or so, but with a little smaller transformer and smaller heatsinks.
He said it worked before he got rid of it. I started putting transient filter components into it, 2 X caps, a coil, 2 Y caps, replaced the main Canicon caps 200v 470uf with UCC 200v 680uf's. I also replaced the smaller bridge rectifier it had in it to a larger one from a old CWT Antec 400w (don't worry, it had the connectors all cut off of it so it was useless) He did the mod to get rid of the voltage selector switch, tie the wires going to it together to make it stuck on 115v, which is the voltage that I run of coarse being in the US so no problem there.
Anyways, I plugged it in to test it, and hooked up a hard drive for a little load. I went to check the 5vsb voltage, and there was nothing. I checked the end of the power cord, it has 123v going to it, I checked the connector to the psu's pcb from the receptacle, it has 123v going to it (I had to solder the wires together to adapt it to this bestec case,) I looked at the fuse, and it was blown. Dang. So I figured I might have put the coil in wrong, so I took out the first X cap, and checked. First I got 3.56ohms, but it goes up to 3.7 or so. I have another identical yuelin psu he also gave me, it reads 6.68 in the first X cap spot, and it dosen't have anything but two little cheap Y caps for the input filter, the coil is just two jumper wires.
He said it worked before he got rid of it. I started putting transient filter components into it, 2 X caps, a coil, 2 Y caps, replaced the main Canicon caps 200v 470uf with UCC 200v 680uf's. I also replaced the smaller bridge rectifier it had in it to a larger one from a old CWT Antec 400w (don't worry, it had the connectors all cut off of it so it was useless) He did the mod to get rid of the voltage selector switch, tie the wires going to it together to make it stuck on 115v, which is the voltage that I run of coarse being in the US so no problem there.
Anyways, I plugged it in to test it, and hooked up a hard drive for a little load. I went to check the 5vsb voltage, and there was nothing. I checked the end of the power cord, it has 123v going to it, I checked the connector to the psu's pcb from the receptacle, it has 123v going to it (I had to solder the wires together to adapt it to this bestec case,) I looked at the fuse, and it was blown. Dang. So I figured I might have put the coil in wrong, so I took out the first X cap, and checked. First I got 3.56ohms, but it goes up to 3.7 or so. I have another identical yuelin psu he also gave me, it reads 6.68 in the first X cap spot, and it dosen't have anything but two little cheap Y caps for the input filter, the coil is just two jumper wires.
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