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@mecha

Need some Williams Batman help.
So I've got unreal monitor ripple wave on my Moon Patrol K4903.

I'm getting LEDs 1 and 3 lit on PSU.
LED 2 has gone dark.
I blew the 4A fuse at F3 but I don't know why as soon as power was supplied from AC input at 4J1.

I'm showing 9.26 VAC at pins 11-12, drawing shows 11.5 needed. I'm showing .5 VAC at pin 9 and over 26 VAC at pin 8. Drawing shows only 20 VAC needed.

I'm showing 10.66 VAC at pin 1 needing 22.6 VAC. All these readings match the terminals on the transformer…

Am I actually looking at a weird transformer problem???

IMG_7229.jpeg
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