KNOWN PROBLEMS WITH THE HP1702 LCD DISPLAY
Display turns on and then 5 seconds later the display turns Black.
There are 8 caps that need to be replaced on these monitors.
Problem is in 1000µf 16v capacitors as said before there is
four of them on the board. Best way to fix it is change them all to new ones.
I have fixed three of these monitors and all had this same problem.