Re: IBM 8143 Board Recap

Well I finally replaced the bad cap on my IBm board and had some results but not what I wanted. Before the cap, the machine would not do a thing. now with the new cap, it comes on and the fan starts surging high then low and it keeps doing this till you pull the plug. I think this board had other issues other than the one bad cap. I noticed beside the bad cap was a black surface mounted circuit that looked like it was burned pretty good. This machine may have taken a bolt of lightning, I wasn't told what happened to it so I am just speculating.
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I have someone that has a Dell optiplex gx260 that has a bad board. Looking at the board it has one bad cap on it. The cap that is bad is a rubycon 6.3 mcz 1500uf. I just recently bought some rubycon 1500uf MCZ 10v caps for another project I am working on. The cap on the dell is a small fat cap, and the caps that I bought are longer and skinny. Could I use the new caps I bought to replace the bad cap or is there a difference? The only difference is the voltage but I thought someone here said it was ok to change voltage as long as you don't go backwards.

Thanks

Re: IBM 8143 Board Recap

By what your telling me here, the uf doesn't matter on these as long as it is above 470 and the voltage is either 10 or higher? Sorry if I am misunderstanding you here.

Thanks

Re: IBM 8143 Board Recap

The cap that is bad on the board does not have any name markings on it, or none I can see, only what I posted. The rest of the caps on the board are rubycon and some look just like these except these are a smaller diameter. So sorry for the confusion if I was wrong about these. I assumed wrong.

There are 3 of these in about the same area, would be better to replace all 3 or just the one bad one?

Thanks again for the info.

Re: IBM 8143 Board Recap

All the caps on the board are Rubycon.

The cap that is bulging is a KZJ series 1500 10v. I don't see this cap listed in the kits.

Instead of using a cap on some other boards I have, I may just order some new ones.

I will have to get a meter and check the esr.

I am new to this forum so excuse me for posting something that might have been covered before.

I have an IBM Thinkcenter 8143 and the board is made by foxconn and the ibm part number is FRU29R8260 if that helps my upcoming question about a bad cap.

This system stopped working and is out of warranty and after looking at the board I noticed one of the caps was bulging. If you can pull up a picture of this board, it is the cap right next to DIMM 1 and 2. It is a dark brown and goldish looking cap. The numbers on the cap are 1500uf, 10V.

My question is...