This picture shows the point where the HV is measured for the display board.

Note also the two mods I usually apply as part of a service on 2/2A displays: hot glue under and around the inductor body to stop it being broken off during disk tray removal (don't laugh - you won't when you break it off yourself). The second is the dimmer glitch fix - the SMT capacitor across the two middle legs of the dimmer controller.