Describe your vs19 (Silver) 19"

The monitor is bad.? does it work with a flashlight pointed at the screen? yes, then the CCFL tubes inside are bad,
or the main board, HV inverter section bad.

so replace it.
HP does not make books on monitor repair or disassembly .
remove the base and base bracket first.
then all screws you see, it then splits. all ascess covers off too first, that can hide screws.
it is not the diodes
#1 all time fail is CCLF here. never seen on this old not dead.
all are now, 20,000 hours and BAM dead.
that is why LED was invented top stop the BAM.