I measured one of my S11 boards the way that I asked you to.
It measured about the same...so you are out of no man's land and back on the island.
There is some corrosion, but I don't see how that can be the cause for dragging down the 5V. We really need to isolate between the MPU and the PS.
Let's pull that PS and diode test the bridge.
Meter on diode check.
Black on the "oddball" leg.
Red on the flanking legs. Should read about .5 plus or minus.
Now move the red probe catercorner from the oddball leg.
Black on flanking legs. Should read about .5 plus or minus.
As PINTEC mentioned, you may have a partially open bridge.
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Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact ... for board repairs
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