Bestec ATX-250-12Z rev.C caps

[alessioblaupunkt]

Bestec ATX-250-12Z rev.C ( year 2002 )
Caps replacement.

Hello, i need your experience:
my psu is 10 years old, it works 6 hours a day for 9 years and I played games only for the first 2 years.

Now I'm checking the electrolytics and this psu is full of Pce-tur except for the 2 bigger caps at the primary stage.
All Pce-tur looks ok, they are GP caps, they have low leakage current, esr "according to my measurement" is still fine.

Several months ago I ordered a bunch of low esr caps from Austria, now I need completely different capacitors because only dismantling the entire secondary stage it is possible to "see" the value.

An example: I ordered 10 Rubycon ZL 2000uF 10V and now I realize I need only 5 of these, because the rest are 1000uF 16V and one is 2000uF 16V!!

The problem is: I'm currently far away from the store, do you suggest to wait a couple of months and get fresh new low esr caps or reuse some of the Pce-tur in combination with other low esr cap I can collect somewhere in my house?
Example for the 1000uF 16V : I have 2 or 3 fresh low esr caps, the rest are new but 25V or higher and there are no space for them!

Other questions: is it right to use low esr caps in the psu and the same esr caps in the mobo? ( Because in the mobo I have Rub ZL and Pan FM or FC. )

Bestec used GP caps in psu for technical reason or for economical reason?
I ask this because a few years ago even Enermax uses Pce-tur in their psu...

[c_hegge]

Re: Bestec ATX-250-12Z rev.C caps

do you suggest to wait a couple of months and get fresh new low esr caps or reuse some of the Pce-tur in combination with other low esr cap I can collect somewhere in my house?

I'd say wait until you get some good low ESR caps to recap it with.

Bestec used GP caps in psu for technical reason or for economical reason?

Bestec often use GP caps, but my guess is that its to keep costs down. They usually don't hold up that well in a PC power supply

Other questions: is it right to use low esr caps in the psu and the same esr caps in the mobo? ( Because in the mobo I have Rub ZL and Pan FM or FC. )

It is possible to have too low an ESR on a power supply. Ruby ZL and Panny FM are usually OK for use in power supplies, but you wouldn't want to go any lower ESR than those (ie, don't use Ruby MBZ or MCZ, or Panny FJ or FL)

[alessioblaupunkt]

Re: Bestec ATX-250-12Z rev.C caps

Thank you.
Some Errors:
Caps are 2200uF not 2000, and caps are JPCE-TUR, not PCE-TUR ( tricky J in the P )

[everell]

Re: Bestec ATX-250-12Z rev.C caps

One of the COMMON problems on the Bestec power supplies is the glue ages, turns dark or black, and becomes resistive AND corrosive. The older the power supply, the bigger the problem. Here are two pictures showing this old glue problem, the before and the after with the after areas circled in red. Also C36 was bulging, also common in this psu model.

Two things to do. Replace C36 whether bulging or not. Scrape as much of the glue off as you can. This should keep you plenty busy until your new capacitors arrive.

Pictures refused to upload.....will have to add them later.

[alessioblaupunkt]

Re: Bestec ATX-250-12Z rev.C caps

Wait, it's not necessary to upload pictures, I removed all the glue long time ago.
My intention is to replace all the caps, I must find the correct replacement because these GP have a damn low leakage current.
Tomorrow there will be more news.

[alessioblaupunkt]

Re: Bestec ATX-250-12Z rev.C caps

Hello,
my cousin will order for me Pan FR (= FM).