Maybe they all leak also because they should have used the ones with a little higher capacitance in the design.
And why did they not use tantalum SMD capacitors in the first place that would have eliminate a lot of service need? Maybe partly because of the high price at that time.
A1200 Rev 2B has one tantalum SMD capacitor in the place (close to VIDEO port) where there was of an electrolytic SMD capacitor in the previous motherboard revisions. I also say one assembling his empty A4000T motherboard with tantalum SMD capacitors only. This clearly is not recommended since it is not more common. Why?
The capacitance is not the issue ,maybe higher voltage would of been better,but the 90's was a time for loads of bad caps in everything. I think it was cheap caps or overheating when soldering or both.
Tantalums can absorb moisture. there is a reason the engineers used electrolytics. Nasa even tested the effects of moisture on these. Personally i dont think subbing tantalums for electrolytics is good in most cases.
