SKIMAMMOTH 0 Newbie Poster

I have a VL2018w princeton lcd monitor with a power supply issue..I'm not too bad at working on these but this is the first time i've seen this OUTPUT:bk to red minus 11.72
:bk to yellow minus 6.51
????? yes the probes are conected right - my info says it should be red +5 yel +12
any ideas?? i know its probably in the bridging diodes at the ac end but not sure..i've never worked on this type P/S. also anyone know were i can find a wirring diagram? Thanks for any help or suggestions.