SPI 400 PSU 1000uf to 1200uf??

[kris]

I've read that on motherboards it's ok to go up in capacitance but would it be ok to do the same within a power supply?? i have a couple bulging teapo 6.3v 1000uf caps and only have 2x 10v 1200uf replacements on hand. hopefully replacing the caps will get this sucker back up and running. i noticed some electrical noise coming from the unit as well.

thanks in advance

[berniedd]

No problem there. That's only a 20% increase in capacitance. However, I would suggest you replace other similar capacitors of 470 ufd or more, even the ones that still look good.

[kris]

thanks so much for your reply. i'll check my inventory of capcitors and perhaps place an order with digikey.

thanks again

Kris

[KeriJane]

Hi Kris

The ESR rating is very important for Power Supply Capacitors.
You probably want to use a Low-ESR cap like a Nichicon PW or Panasonic FC
A lot of better PSUs use United Chemicon's KZE series or sometimes KY.

Have Fun
Keri

[Toasty]

Whose power supply? Brand, model, wattage?

Before you go spending time and money, let's make sure it's not a known bad brand or model.

Toast

[kris]

Hi it's a Sparkle (Fortron I'm guessing) FSP400-60THN 400watt
http://www.sparklepower.com/pdf/FSP400-60THN.pdf

I have really bad luck, as a Computer Technician I've installed 100's and 100's of Sparkle power supplies. Over the 12 years that I've been in this industrial I've noticed very low failure rates on these supplies. My previous job we worked on major tenders for the school board, government, corporations like 3M and Fortron or Sparkle was always our go to power supply. Our warranty with these clients were either 2-3 year guarantees. Out of the 1000's of systems, I can honestly say that very few repairs resulted in replacing a power supply. Anyways, back to my bad luck I've had 3 sparkle supplies fail over the last 5 years!!!! I'm not hard on my equip and i know how to care for it. I just think it's funny. oh well enough rambling

thanks everyone

[kris]

i salvaged some 16V 1200uf caps from a dead p4p800-se motherboard. the high pitch electrical noise is gone and I'm running prime95 and a few other apps to see how stable this system will be, so far so good.

when my wife found out the other night that my main system was down she looked at me and said "don't you even think about taking over my acer netbook" lmao. well i'm glad i got it fixed and saved some dollars on a new psu. i'm also glad i don't have to look at the tiny 9" netbook screen anymore haha

I'm still curious to know if this model has problems??

thanks again

[Toasty]

Nope, no problems noted. Sparkle/FSP recommended by several members.

Did you get a peek at the other cap manufacturers in there?

What brand/series were the replacement caps from the mobo?

Toast

[yanz]

umm, usually i replace those 2 x 1000uF (or 1500uf) with 2x 2200/2700/3300 ones. dont have problems so far. funny that oftenly i see 2200uf in one PSU but 1000uf in other one with exactly the same design. so i think dont worry too much.