Bestec have also moved on from the half-bridge topology, unlike so many other cheap Chinese PSUs. At least Bestecs can do their labeled rating with no problem, though it would have been nice if they had OPP too.
Added to the fact that Bestec like to use CapXon or Jamicon capacitors, it's understandable why they fail so quickly.īestec power supplies are still much, much better than truly cheap, Chinese power supplies which deliberately remove almost all that is necessary for an operational PSU. My only other issue with Bestec is that they like to use flyback designs on the +5VSB circuit and this means much more stress added to the already inefficient and stressful linear regulation of that circuit (thusly the reason why you don't see +5VSB rated at anything more than a few amps), especially when it doesn't receive airflow (when AC power is not removed and when it's plugged in). And, as everell mentioned, a severe modification to the ATX-250-12E's fatal issue. They're not A+ grade but with a simple recap and with conductive glue amiss (unless they preferably use white glue) they can be good, and if need be, a relocation of the +5VSB diode.
