Some information about measuring voltages on this board.anyone spotted a vcore measuring point ?
http://www.vr-zone.com/index.php?i=4111&s=8
On vr-zone the Vcore point is 100% right, but Vmch is not, same is Vdimm.
Not everyone has a True RMS multimeter, that shows always right value for complex signals.
This is my poor and simply drawing about PWM modulated output schematic diagram(Vcore/Vdimm/Vmch, Vgpu, etc)
If you measure DC voltage on wrong point (from mosfet leg or ferrite input leg) with cheap non True RMS capable multimeter,
you never now how it counting AC and DC component together.
The safe and right way is measure DC voltage on real DC voltage point,- after filtering. (green point)
And real-life pics
Vdimm right measure point on Bad Axe2:
On vr-zone showed point you get that kind of "DC" voltage:
(DC Voltage must be a a straght line on this scoopmeter)
The Vmch measuring riht place is from missed caps (black wire point)
If You measure vr-zone point voltage, you get this:
Again we have lot of HF AC component, that can "fool" some multimeter.
Bookmarks