What Capacitors to Buy?

[PsychoCrazy]

OK. I have an MSI 694D Pro (dual S370) motherboard which has bad caps, and I want to try to replace them. I thought I had a donor motherboard (to use caps from), but that fell through. So now I'm looking at purchasing some caps online.

The caps that are currently on the board are 2700uf and 6.3v. I have read somewhere else that 2200uf caps should work just fine. I have found some caps on mouser.com, but I'm not really sure exactly what to get. From my search of "2200uf 6.3v" I get 15 results. They are listed in the following categories:

Bi-Polar/Non-Polar Electrolytic Capacitors
General Purpose Electrolytic Capacitors
High Temp Electrolytic Capacitors
Low Impedance Electrolytic Capacitors
Unspecified Electrolytic Capacitors

Can someone tell me which of the above categories I should look in to find replacement caps for my board? The prices range from about $0.37 to $1.10 per cap. Any suggestions would be greatly appreciated!

 

[*kjm]

You could use this cap from Newark.

Newark

You should use the 2700uf caps.... you can use higher votage if you need to but not lower uf caps.

 

[DJMiX]

Originally posted by: PsychoCrazy
OK. I have an MSI 694D Pro (dual S370) motherboard which has bad caps, and I want to try to replace them. I thought I had a donor motherboard (to use caps from), but that fell through. So now I'm looking at purchasing some caps online.

The caps that are currently on the board are 2700uf and 6.3v. I have read somewhere else that 2200uf caps should work just fine. I have found some caps on mouser.com, but I'm not really sure exactly what to get. From my search of "2200uf 6.3v" I get 15 results. They are listed in the following categories:

Bi-Polar/Non-Polar Electrolytic Capacitors
General Purpose Electrolytic Capacitors
High Temp Electrolytic Capacitors
Low Impedance Electrolytic Capacitors
Unspecified Electrolytic Capacitors

Can someone tell me which of the above categories I should look in to find replacement caps for my board? The prices range from about $0.37 to $1.10 per cap. Any suggestions would be greatly appreciated!

You should never use caps at lower value that waht you have .. you can go higher value...

here's a good link for ya about caps.

Text

 

[PsychoCrazy]

Thank you both for the input and advice. I was thinking you weren't supposed to reduce capacitance, so I won't go for the 2200uf caps despite what I have read about them working as replacements in other people's 694D Pro motherboards. I'd rather play it safe.

DJMiX, that's a very handy link for capacitor info. I'm adding it to my favorites for future reference.

*kjm, thanks for the link on Newark. The only possible problem I see is that cap is 12x25. The current caps are 10mm, and a few of them are very close together. I would probably have to leave the leads a little longer when mounting the new ones so that I could bend them slightly to make them all fit. Any potential problems with that?

Also, would this 3300uf cap work? link I would like to avoid the $5 handling fee that Newark charges.

 

[*kjm]

No as long as they will not short out to anything else you will be fine. Mouser has caps the same size as I listed HERE.

And Digi-Key has a 10mm cap HERE.

And the data sheet for it is HERE.

That should help you out.

 

[PsychoCrazy]

Originally posted by: *kjm
No as long as they will not short out to anything else you will be fine. Mouser has caps the same size as I listed HERE.

And Digi-Key has a 10mm cap HERE.

And the data sheet for it is HERE.

That should help you out.

Thanks for the additional info. I'll make sure they don't short out to anything else.

As for the 2700uf cap you found on mouser, I saw that one too, but they have a minimum quantity of 200 for that one. Also, Digi-Key charges a handling fee like Newark.

I did just read over at badcaps.net that they use 3300uf caps in their MSI 694D Pro repair kit. So I guess the 3300uf caps from mouser should be OK. Hopefully I can get this board up and running again!

Thanks again for your help!

 

[CraigRT]

I just went to my local parts supplier and ordered up some caps. (whichever brand) and they work great. you can use higher voltage, but make sure your uF (microfarads) is the same as the ones you've taken off the board.

 

[Zazuk]

I have a main board with leaking caps and did a google sreach and came across this post which helped me greatly, I have just ordered the new caps I need from Mouser. I just want to say thanks.

So THANKS!!!

 

[PsychoCrazy]

Forgot to update this sooner. I got the 3300uf caps from Mouser and put them on my 694D Pro (used an old 30 watt iron) It's been running rock solid for over a month now, and I'm very happy to finally have SMP again. Thanks for everyone's help!!

 

[Zazuk]

I had to replace 9 of 6.3v 2200uf, 4 of 10v 2200uf and a 6.3v 1500uf. After which I tested it out and got it to POST and go in to BIOS. My next step is to install it in my sister-in-law's PC which will be a good up grade for her.

 

[PsychoCrazy]

Wow, that was a lot of caps to replace. I was lucky--I only had to replace 6 caps, and they were all the same.

 

[Zazuk]

The main board was an abit kt7 which one did you have a problem with?

 

[PsychoCrazy]

MSI 694D Pro (dual S370). It had 6 2700uf 6.3v caps and those were all bad. All the rest of the caps on the board were fine.

 

[Zebo]

Damn I need to stop throwing away mobos after I fry them. Sorry.

 

[Zazuk]

Originally posted by: Zebo
Damn I need to stop throwing away mobos after I fry them. Sorry.

What the hell do you do to main boards to fry the capacitors?

I know that Abit got a bad batch that they use which would fail after a long period, it had something to do with the kind of water that was used in making them.