Re: Bestec ATX-250-12Z rev D



All of my relevant 2200s were 10v (I had to go back & check).The 16v 1000uF I removed tested fine, and I'm gonna try not changing the other two still there ('existing' in the annotated picture) and see if that resolves that. I also, I think I mentioned, have to change the 35v 220uF next to the other heat sink, it was also bulged, and tested bad. That's quite a set of caps to change in one PSU!

Thanks for everything. Oh, and I wanted to mention, that's one helluva photo! Spot on!!...

Re: Bestec ATX-250-12Z rev D



Zackly! And then it takes legions of EEs, hackers & hobbyists to figure out the differences and gather together to share the info! <^8#



Yeah, it should be a pretty good reference, even if it's not quite identical.



Yeah, me too; hey, a good project for me would be to take photos of the board, front & back, and then lay out the diagrams, then try to draw the schematic for it! (Oh, yeah; now who's getting brave?! <^8#)



Rule #1: Never...

Re: Bestec ATX-250-12Z rev D



Many thanks! It may be slightly different, and I'm a tad out of my league trying to read it, but things are slowly beginning to come together, and I can follow module to module and see if I can pull what info I need from it....

Re: Bestec ATX-250-12Z rev D



Thank you! Many good pictures, much help. I can tell, I'm gonna like it here... <^8# I *really* like the repositioned cap adjacent to the heat sink! I thought I'd leave the legs a little longer, then angle it away from the heat sink, but THAT's a MUCH better solution! The traces you drill through; are they the same as its original position (I hadn't tried to trace it back yet, I'm guessing they are...) I have the rotary tool, the drilling/retrofit I can handle no problem...!!



That's excellent! Thank you,...

Re: Bestec ATX-250-12Z rev D

Actually, I thought I had it narrowed it down to either of the two closest to the extreme upper right (output wiring loom top right.) There are actually 3 sort-of rows of caps between the edge of the board and the chokes, plus another between the two chokes (for a fourth row, as it were). The one between the two chokes is out, the first (from the top) in the third row is a 16v 2200uF cap, the third is a 16v 1000uF cap, and I suspect the errant 16v 1000uF cap I removed that tested OK belongs between them. Everything else I removed from that entire area...

Hey, everybody! I'm so new that some forum functions still won't work, that should go in the near future, and I'd bet that this PSU has been a regular topic. I have a simple problem; I have most of the caps ripped out of this PSU, and would like to find a board layout diagram and schematic for it. I have a Jamecon 16v 1000uf that tested OK but will still get replaced, and needs to go back in amongst a bunch of what were *really bad* Jamecon 10v 2200uFs that hopefully will go back in as Nichicon 16v 2200uFs - I have it on pretty good authority that anything less than 16v caps suck, and I doubt...

Re: New Members - please post your introductions here

Hey, I'm Bob, 58 m Peterborough, Ontario Canada. 15 years auto mechanic, bored, got into PCs early, been supporting them ever since. Electronics hobbyist (wannabe for decades), bought some good equipment lately, lust after a Fluke 87 V, went hardware when I noticed a bulged cap on a motherboard. That started this whole thing...

Here we go again...! <^8#