Re: Bestec ATX-250 12Z problems and solutions

I have a Bestec 250 12Z. Seems to work better, now that I opened it up, hosed it out, and let it dry. It was shutting down frequently, in my hot (90F+) workshop, but now doesn't. I think the dust was acting as an insulator and causing the heat to "stick" and cause the PSU to shut down.

Does anyone have a complete schematic for the Bestec 250w 12Z, or know where to get one? I'm curious to know what makes this PSU tick. What is the difference, component-wise, between the Bestec 250 12Z and the Bestec 300 12Z? What...

Re: Opinion Poll: Bestec power supplies



I'll look into the fan suggestion. Couldn't hurt. Airflow never does... of course, I suppose installing a Tornado in there would be overkill, right? Do they still even make those super-fans (sounds like a dust buster)?

My systems are the usual CPU and DVD drive and hard drive and built-in video. So, whatever voltages those use.

I asked over at JonnyGuru about jumpering the voltage switch, so that it was permanently 110V. I'm never leaving the US or selling it overseas, so why worry? That switch...

Re: Opinion Poll: Bestec power supplies

I have an old Bestec 250 12Z. It runs ok, but was shutting down when external temps got too high (my workshop gets over 90F in the summer). I opened it up, hosed it out, and let it dry and plugged it in and it seems to run a little better now, since all that insulating dust is gone. But what I'm wondering is... can you improve this PSU beyond it's current design? I know new, Japanese caps will likely improve some things (like ripple), but can you upgrade other components to improve it more? I love to tinker with things and knowing I can spend...