If the screen on your HP Pavilion zv5000 laptop suddenly went dark, most likely this problem is related to the inverter board. This guide explains how to get inside the display panel and and replace the failed inverter board with a new one. You will not find these instructions in the official service manual.
The screen inverter replacement will take about 20-30 minutes. You can find a new inverter board for your Pavilion zv5000 laptop here for less then $15.
Here are some of the most common inverter failure symptoms:
1. The laptop starts fine but you barely can see any image on the laptop screen. If you connect an external monitor, it works fine.
2. You turn on the laptop and the screen works fine for a while but then it goes dark. If you restart the laptop the screen starts fine and goes dart again.
3. When the screen is dark you can light it up for a moment by tapping on the lid close switch.
It is possible that your inverter board is OK and there is a problem with the backlight lamp inside the screen, but this failure is less common.