Found a couple Sony's troubleshooting one

[Eric H]

I brought the 15 incher in tonight and pulled the back off, lots of black dust but not bad overall, wetness was apparently minimal, more like light splattering than a soaking.

Running it off the Isolation transformer to drop the voltage and keep it running I get 139 volts across the main filter cap.

Measuring from filter negative to the Regulator I get .5v 12v and 0.0 volts, left to right looking at it face on.

Measured from chassis ground (a shield) I get -12v, 0.0v -12v
Nothing seems to be getting hot.

If I plug it into the wall and let it go into shutdown I get roughly half the voltage on the Regulator but I get about 166 volts on the Filter cap.

I'm not sure I'm measuring where I should, should I pull the Regulator and do a Diode check on it? The first two legs read pretty much shorted in circuit but that might be normal of course.