Just another data point for everyone.
We've got about ten SOYO P4I845GVISA PLUS motherboards in use for data acquisition systems because they've got three ISA slots to support legacy ISA data acq boards.
We've recently had three of them fail within about a month of each other. One had operated for about 9 months. One for about a year and a half, and the other had operated for only a few weeks.
Inspection of all three bad ones shows that many of the caps in the CPU core voltage conversion area are bulged and have leaked out their tops.
The bulged/leaking caps are all SACON SZ5 10 and SACON SZ602.
The remainder of the electrolytics on these boards are SACONs or EVERCONs. They look very similar except that the EVERCONs have a "cross" shaped vent/relief pattern on their tops while the SACONs have the "K" shaped vent/relief pattern.
I ordered new caps for every cap on these boards, and got enough to do five boards. Today, I got the caps and "recapped" the board that had failed after a few weeks, and it is running fine now. I plan on recapping the two other dead ones when I get the time, and there is one MOBO we have never used and I'll recap it before we put it into service.
I'm hoping this will make these boards reliable in the long term.
We've got about ten SOYO P4I845GVISA PLUS motherboards in use for data acquisition systems because they've got three ISA slots to support legacy ISA data acq boards.
We've recently had three of them fail within about a month of each other. One had operated for about 9 months. One for about a year and a half, and the other had operated for only a few weeks.
Inspection of all three bad ones shows that many of the caps in the CPU core voltage conversion area are bulged and have leaked out their tops.
The bulged/leaking caps are all SACON SZ5 10 and SACON SZ602.
The remainder of the electrolytics on these boards are SACONs or EVERCONs. They look very similar except that the EVERCONs have a "cross" shaped vent/relief pattern on their tops while the SACONs have the "K" shaped vent/relief pattern.
I ordered new caps for every cap on these boards, and got enough to do five boards. Today, I got the caps and "recapped" the board that had failed after a few weeks, and it is running fine now. I plan on recapping the two other dead ones when I get the time, and there is one MOBO we have never used and I'll recap it before we put it into service.
I'm hoping this will make these boards reliable in the long term.
Comment