MSI 7383 / G31M2 - bad capasitators?

[jemaliahz]

Hi,

I'm having problems with my MSI 7383 board. Symptoms: Crashes totally without warning, cpu fan shuts down. It's no power supply problem as I thought as I checked with other psu. If even bothers to boot up it fails when reading from hdd should start. It just hangs.

I started googling for these caps I found from motherboard and I came to this site.

I'm have about 10 pcs of ost caps: 4v 680uf - most of then look fine but few are little bit "fat". I thinking these caps might be the reason as they are very close to cpu heatsink and I don't have best possible ventilation. Normally I wouldn't even mind to start soldering nothing but this board is from my htpc and I can't find good new motherboard with same specs. I just need to get this fixed.

My question: What kind of caps should I use to replace these blue ost's? Should I change also some others caps? I'm having about 15 pcs of 6,3v 1000uf (noname) and 10pcs of 16V 1000uf KZJ's. Should I replace these also?

If you could have replacement caps with links I would be very happy. I'm attaching few pics of motherboard just give more info.

Pictures of MB can be found from http://www.malila.fi/badcaps

Greetz,
-J-

Ps. Are these ok for 4v OST's --> https://www.badcaps.net/store/produc...products_id=79

[mockingbird]

Re: MSI 7383 / G31M2 - bad capasitators?

I see a combination of UCC, OST, and Panasonic.

Yes, the caps you linked to are a good replacement for those OST capacitors around the VRM.

You should also replace those tall UCC caps behind the VRM.

[jemaliahz]

Re: MSI 7383 / G31M2 - bad capasitators?

Do you mean those long caps at right side of this picture: http://www.malila.fi/badcaps/IMG_1006.JPG ?

Or these: http://www.malila.fi/badcaps/IMG_1012.JPG

What could be good replacement for those? I don't really know much about these so I need to ask again. Link would be appriciated!

[mockingbird]

Re: MSI 7383 / G31M2 - bad capasitators?

Both!

It looks to me like those are UCC "KZJ". A good replacement is Samxon GC, Rubycon MCZ, or Nichicon HN.

[PCBONEZ]

Re: MSI 7383 / G31M2 - bad capasitators?

To make it clear....
All OST are problem caps.
All Chemicon KZG and KZJ are problem caps.
.
-Usually- only need to worry about the caps 6mm diameter and larger though.
.

[jemaliahz]

Re: MSI 7383 / G31M2 - bad capasitators?

So my shopping list:

OST 4v 680uf, replacement: https://www.badcaps.net/store/produc...products_id=79
noname 6,3v 1000uf, replacement: https://www.badcaps.net/store/produc...products_id=43 - 6,3v, 1200uf (not same values, ok still?)
KJZ 16V, 1000uf, replacement: https://www.badcaps.net/store/produc...products_id=46

can someone confirm if possible that I'm ordering compatible stuff

-J-

[PCBONEZ]

Re: MSI 7383 / G31M2 - bad capasitators?

Do not replace the 16v caps with 10v caps.
- The 10v rating is a max limit for the cap.
- Those are most likely on 12v actual voltage.
Use one of these depending on the diameter you need.
https://www.badcaps.net/store/produc...products_id=45
https://www.badcaps.net/store/produc...products_id=44

For the others, they should work.
!!! - Did you check that the diameters are okay?

While replacing 1000uF with 1200uF will work, my choice would be these:
https://www.badcaps.net/store/produc...products_id=46

- It is okay to go to a higher voltage rated cap because you know the actual voltage is still going to be less than the new cap's max voltage rating.
- If you are going to use a lower voltage rated cap [than the original cap] then you need to check the actual circuit voltage. Make sure you don't use a cap rated for less volts than the actual circuit voltage.
.