In this instructible i will walk you through fixing a dead lcd back light power inverter using the parts you have. You can tell if you have a dead back light by first eliminating other possibilities. Check monitor on multiple computers. Make sure the indicator light of the monitor turns on and stays on etc.
For this monitor the problem wound up being two capacitors hit with the "capacitor plague" - (look it up on Wikipedia). and a burnt Surface mount resistor. I sourced all parts from junk i was going to throw out. This was a free fix.
Also be careful when working with capacitors and this inverter in general. It is EXTREMELY highvoltage and capable o giving quite a shock. Also to bridge a fuse like i did - is not very smart. Manufactures are really really cheap - so if they bother to put a fuse into a product - its probably for a good reason.
The only camera i have available is my iphone - which is poor and i apologize. Hopefully you can still get the point. I hope this helps some one. New inverter boards are about 65$ and not worth the price. Hell i only paid 180 for the whole minitor 3 years ago.
Step 1: Prove its the back light
To prove you have a dead back:
1. turn the monitor while attached to a computer.
2. take a strong flashlight and shine it at the screen
3. look to see if you can make out any dim indication of an image.
*** remember that an lcd screen is like a glass pane. Inorder to see images - there must be a source of light to iluminate it.