badcaps in a ATX PSU

[RukyCon]

Re: badcaps in a ATX PSU

tho i just made a note

now that's just for the big caps

[RukyCon]

Re: badcaps in a ATX PSU

i just desolder the camicon 3300uf 10v cap and it tests at

5229uf
0.18ESR
2.2%Vloss (not sure what that means)

it looks to be a badcap

[stj]

Re: badcaps in a ATX PSU

Vloss looks o.k. - if it's over about 4% it's not looking good.

but yes, that's a very bad cap

[RukyCon]

Re: badcaps in a ATX PSU

Vloss looks o.k. - if it's over about 4% it's not looking good.

but yes, that's a very bad cap

ok i will put it in my badcaps bin

[RukyCon]

Re: badcaps in a ATX PSU

i tested it again and now the Vloss is 3.3%

[stj]

Re: badcaps in a ATX PSU

it will change a bit over time & temperature.
when you test enough caps, you get an idea of the range for a good cap.
polymers have higher loss btw.

[RukyCon]

Re: badcaps in a ATX PSU

it will change a bit over time & temperature.
when you test enough caps, you get an idea of the range for a good cap.
polymers have higher loss btw.

that's good to know for the future

BTW this is the first PSU i've ever repaired
tho like i said at the start

i have a good PC PSU which i got from HSC Electronics used for $6 on sale.
now i say the PSU is good but it's not 100% good because i wanted to open the power supply up (just to see how it work) but then i spotted 3 bulging capacitors

tho this is still technically a repair even if the caps were not 100% dead 'cause i'm still changing out faulty components "before they die"

[stj]

Re: badcaps in a ATX PSU

BTW this is the first PSU i've ever repaired

not yet.
you can only say that when you power it up and it runs.

[RukyCon]

Re: badcaps in a ATX PSU

not yet.
you can only say that when you power it up and it runs.

i meant it's the first PSU i'm attempting to repair

[RukyCon]

Re: badcaps in a ATX PSU

UPDATE

the order has been placed now time to wait

[RukyCon]

Re: badcaps in a ATX PSU

UPDATE
1/14/17 2:16pm

the order was upgraded from fedex ground to fedex 2nd day for no extra charge

[Behemot]

Re: badcaps in a ATX PSU

ok now all the caps in my cart are

chemi-con
2200uf 10v KY
680uf 16v KY
2200uf 16v KYB
3300uf 6.3 KYB
1000uf 16v KY

I carry most of those much cheaper…plus 3300/16 D10 caps.

[RukyCon]

Re: badcaps in a ATX PSU

update
the capacitors have arrived today

[RukyCon]

Re: badcaps in a ATX PSU

UPDATE
I successfully repaired the PSU
thanks for helping me do i first repair

[Pentium4]

Re: badcaps in a ATX PSU

Sweet deal, good job man POST PICS! Also, don't forget to put a drop of oil in the fan

[RukyCon]

Re: badcaps in a ATX PSU

Sweet deal, good job man POST PICS! Also, don't forget to put a drop of oil in the fan

will WD-40 work for the fan
and i did not do all of the small caps since some are in hard to reach parts of the PSU and because i accidentally burned my hand trying to desoder one but it feels better now
ok here are the pictures you want



and it does run

[Pentium4]

Re: badcaps in a ATX PSU

Good work, sir! Looks beautiful. Take a gander at all those nice Japanese quality caps... No, don't use WD40 for the fan

[RukyCon]

Re: badcaps in a ATX PSU

ok thank you
oh and out of all of the bigger caps i replaced [500UF+] only 2 of the 9 caps tested within specs for capacity
them being a 1000uf 16v canicon
and a 680uf 16v GL [or gold-link]

[RukyCon]

Re: badcaps in a ATX PSU

oh make that 4 of 10 [canicon 2200uf 16 and a other GL 680uf 16v]

[kc8adu]

Re: badcaps in a ATX PSU

shipping more than offsets any savings though.

I carry most of those much cheaper…plus 3300/16 D10 caps.