Premier LC-B300ATX

[Rainbow]

I got two of these PSUs - both with the same cap bad. Canicon 1000uF/10V on the +5VSB rail. Replaced with KOME 1000uF/16V and they seem to work fine now. They're crap, of course...

[Per Hansson]

Re: Premier LC-B300ATX

Those are Deer powersupplies

You really should not use them, they are very poorly built; when they do fail they usually catch fire or send AC into the computer, blowing everything inside the computer beyond recognition...

They are banned by some safety agencies for sale in some countries, like Finland for example...

[Rainbow]

Re: Premier LC-B300ATX

I've got a dead board with them - it was connected to one of them. Overvoltage on the +5VSB due to the bad cap probably killed the super i/o chip...
Yes, it's DEER crap - I'm not going to use them.

[gonzo0815]

Re: Premier LC-B300ATX

Well, have a 15 month old LC-6550 laying on my desk, exact the very same cap blown..
All in all i think it isn`t that bad build, there are all safety caps installed, big rectifier diodes on secondary. But ok, i doubth that it can continiousely deliver the stated 550w ;-)
The i/p caps are rather small with only 680uf, which will give only about 340uf for 220v operation. this is quite poor for that wattage.
May be it is a little better build than the others. As i having seen similar faulths on some Seasonic psu`s which are working fine after recap, i think a new good cap will do it untill the rest of the psu has blown the magic smoke out. Thi psu isn't that stressed, it has to power only an Athlon 64 3000 and a gf6600gt.

Edit: after a closer look i have to say that my lc-6550 is far more decent build than those in the pic`s here.
So i think that either those from you are l&C and the other is LC-Power which could be different manufacturer. May be there is an issu with simple switcher or the

[yanz]

Re: Premier LC-B300ATX

those PSUs look very familiar to me. same input caps. on the secondary sie, mine mostly are JEE, suscon, rulycon, and capxon. that chip is also custom, "2003.." something.

one i revived by replacing almost all componen except the main transformer. big resistor on the secondary side is best to be replaced by 5w or 10w type.

the beer can caps also the culprit for some instability, i've done some experiments (replacing them with teapo LXK).

[yanz]

Re: Premier LC-B300ATX

one have to replace all the tiny caps too if he want to really reuse that psu. i can't help not to use it, i sold a lot of p3 systems with such psu. with $50 for the sistem (no monitor) it can't be any cheaper.