No Power Supply - Dell ST2010 Service Manual

Service Manual
change panel.
l
If the self-test pattern is moving on the screen, please check whether VGA
Cable is plugged in the Monitor or PC if select analog model on OSD or
check whether HDMI Cable is plugged in the Monitor or PC if select HDMI
model on OSD . If the VGA or HDMI Cable is plugged in well, please
change another VGA or HDMIcable.

2. No power supply

Is there DC13 at L852;
Is there DC 5V at L851;;
YES
Is the voltage at C854 in the
range of 127V~372V?
YES
Is the voltage at pin8 of U850 354V?
YES
Is the voltage at pin6of U850 18.0?
YES
Is the voltage at pin3 of T850 510?
YES
Check Q850 U850
40
Check D855
NO
NO
Check D850 F850
NO
Check R853
NO
Check D852
R856