Delta DPS-250AB-22E 250W ATX PSU

[carioux2008]

So, a few years ago i found 2 Acer desktops sitting on the side of the road and scooped them up. im talking about 2008 or 9. So this thing is a few years old. Well, i havent wanted to put any money into this rig because its been a champion since i first started her up. so i do little things and find deals online ($3 Intel Core 2 Duo processor...etc) and she currently runs Win 7 like a champion. Yesterday I tried to start her up and she wouldnt fire. Darn.

Problem: I opened her up yesterday and pulled out the PSU. Low and behold, there are 3 obviously bad electrolytic caps. Im not sure what part of the circuitry it controls, but it must be causing something because when I plug it in and try to test voltage, i get 0vdc everywhere. So, im goanna start there. I already cleaned off the electrolytic material (not thinking I would post here) but I marked them with a red sharpie. I ordered 3 new replacements from Ebay for $3.80 that should work great and have a slightly higher voltage rating, same capacitance though.

http://www.ebay.com/itm/231172679183...%3AMEBIDX%3AIT







I will update when I get the new caps in and start my install!

[kc8adu]

Re: Delta DPS-250AB-22E 250W ATX PSU

get the 2 on +5stby.
one should be between the 3 optocouplers and the heatsink.
other close to purple wire other side of heatsink.

[Pentium4]

Re: Delta DPS-250AB-22E 250W ATX PSU

Yes, replace the 5VSB caps if they're anything but Japanese. Unfortunately, those TWBOR PSR caps also don't have very good ripple current ratings compared to CapXon GL. And it doesn't list impedance, so it could be significantly higher. I guess if you've already ordered those caps on eBay then you can at least use them to see if the unit works after replacing the caps, and then you can order good quality caps for it.

Also, the 3 caps that did fail that we can see are on the 3.3V and 5V output filtering. After the unit is verified working, I would also highly recommend replacing any of the other CapXon caps and the Ltec LZG(?) on the 12V filtering.

[Pentium4]

Re: Delta DPS-250AB-22E 250W ATX PSU

Well, nevermind. It looks like they "randomly" ship caps....that's terrible! You don't even know what you'll get!

[carioux2008]

Re: Delta DPS-250AB-22E 250W ATX PSU

Yea, i know. I at least can test them before I put them in. But, like I said, ive barely put 50 bucks into this computer so if these 3 dollar caps dont work, im really out nothing. I have other PSU's that I can grab and throw in if it doesnt work and I want to give up. Maybe over time i will upgrade all the caps. Quality does pay off in the long term.

Side Note: Im rebuilding the x-over for my Klipsch speakers with ultra-high quality caps and inductors. Just waiting for the good deals.

[momaka]

Re: Delta DPS-250AB-22E 250W ATX PSU

Well, nevermind. It looks like they "randomly" ship caps....that's terrible! You don't even know what you'll get!

Not to mention it is 5 caps for almost $4, so that brings them just about on par (price-wise) with Japanese caps.

But yes, those caps should at least be good enough for a test. If it does work, pull those new crappy caps out and get real Japanese caps... and stay clear of eBay for that, because 99.99% of the caps there are counterfeit.

Side Note: Im rebuilding the x-over for my Klipsch speakers with ultra-high quality caps and inductors. Just waiting for the good deals.

Well, I hope you didn't spend too much money on those, because audio is one application where you DON'T need "special" caps. They just need to be Japanese and good quality (Panasonic, Rubycon, Nichicon, or Chemicon).

[Behemot]

Re: Delta DPS-250AB-22E 250W ATX PSU

http://www.ebay.com/itm/231172679183...%3AMEBIDX%3AIT

Are you kidding me? You could have got NCC KYA 3300/6.3 from me http://www.ebay.com/itm/Exclusive-lo...item4625a68fd9 for very much the same price which are like night and day compared to that and instead you change shit for crap. Makes sense

and stay clear of eBay for that, because 99.99% of the caps there are counterfeit.

No worries brother! I am those 0.01 %

Well, nevermind. It looks like they "randomly" ship caps....that's terrible! You don't even know what you'll get!

Yeah Sanyo and Chong, it's them same for sure

[carioux2008]

Re: Delta DPS-250AB-22E 250W ATX PSU

You guys are right, i could have gotten much better quality caps. And i probably should have. But this is one of my first attempts at repairing something like this. If i do well and it only last a short time I'll be ok with that and try again with better parts.

[carioux2008]

Re: Delta DPS-250AB-22E 250W ATX PSU

UPDATE: well, i got my caps in today. They wound up being fcon brand. Tested then with my meter and all were within spec, though varied between 2.24mF and 2.43mF. I used the closest ones.

Got them installed pretty easily. I didn't replace the 4th one that someone reccommended because i was lacking energy (work kept me over night last night).



She fired right up! I'm letting it sit for a few hours to op test it. Hopefully those cheap caps hold up for a little bit. Who knows, i didn't lose much if they do fail. But, I'm going to have to shut it down for the night because we have bad weather rolling in and i dont want to tempt fate with her yet.


Thanks for your input folks, ill be coming back for more help and advice and maybe one day I'll be able to help some one as you have to me.

[kc8adu]

Re: Delta DPS-250AB-22E 250W ATX PSU

i replaced a lot of fsckcon caps here.
at least they prove the unit is worth fixing right!

[carioux2008]

Re: Delta DPS-250AB-22E 250W ATX PSU

Im sure you have. I literally got the caps in an envelope surrounded by cardboard. Strangest shipping ever. Had even 1 of then tested bad i would have gotten a refund. I'm curious to see how long they last. Cost vs longevity. How much would that repair have costed if i brought it to an electronics shop? I'm guessing 1-200 USD.

[Pentium4]

Re: Delta DPS-250AB-22E 250W ATX PSU

Im sure you have. I literally got the caps in an envelope surrounded by cardboard. Strangest shipping ever. Had even 1 of then tested bad i would have gotten a refund. I'm curious to see how long they last. Cost vs longevity. How much would that repair have costed if i brought it to an electronics shop? I'm guessing 1-200 USD.

In all honesty, those Fcon are better than fake Sanyo/JWCO, etc. They're a step above CrapXon. At my old company, we would have charged $90 for a full recap with 100% Japanese capacitors.

Glad it works!

[Behemot]

Re: Delta DPS-250AB-22E 250W ATX PSU

For that money you have brand new quality unit with stock japanese caps and way better efficiency…

[Pentium4]

Re: Delta DPS-250AB-22E 250W ATX PSU

Right. But he asked, so I answered. When I would do jobs like that, they were for proprietary PSUs such as Shuttle, small Dell chassis, server PSU. Customers would GLADLY pay such a price for roughly 4 hour turn around time instead of waiting for one to come in the mail. Regular ATX were replaced with refurbished or new unit.