Non-working LCD screens can often be found cheap or free. I started doing this originally because I needed multiple screens for schoolwork but didn't want to fork out the money for a brand new one. The key to getting a suitable one for this Instructable is to get one where the screen itself is not broken. This Instructable will describe how I replaced the CCFL (Cold Cathode Fluorescent Lamp) backlights with LED strips. The advantage to using these instead of single LEDs is that the LED strips can be purchased cheaply on Ebay and the monitor can be completely reassembled because the LED strips take up less space than the original CCFL backlights. This means that externally the modified screen will look just like a stock screen.
From my experience, these non-working screens usually have problems with either the power supplies or the inverters for the backlights. Often times, these problems are easily fixed by replacing bad capacitors, but occasionally the problems are different. I managed to accumulate several screens with problems with the inverters I was unable to diagnose with a reasonable amount of effort, so I decided to replace the backlights with LEDs, thereby cutting out the faulty inverter circuit.
DISCLAIMER: This instructable involves opening and modifying electrical devices and handling bulbs that contain mercury. It is meant to be a recollection of the process I used to modify my personal monitor, not a step by step guide for all monitors. Do not attempt this Instructable unless you are qualified to do so. Be sure you are comfortable and qualified before attempting any Instructable and be sure to always disconnect power before working. I cannot be held responsible for anything that comes about from attempting to replicate this Instructable. Attempt it solely at your own risk.
Step 1: Tools and Parts
To complete this project, I used the following tools and parts.
Self Adhesive Surface Mount LED Strip