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You need a new backlight inverter board. If you dissasemble the monitor you will see a circuit board with 4 2-wire connectors connected to it. This is the board you need to replace. Typically they run from $15 to $40. Usually just easier to replace the monitor. Another idea is to reduce brightness levels on the monitor in the menu while looking at it with your flashlight. Then power off then power on the monitor and it might stay on longer.
• 1) TAKE OUT YOUR LAPTOP BATTERY • 2) REMOVE YOUR AC ADAPTOR CORD, that's the wall power, remove it. • 3) NOW HOLD DOWN THE POWER BUTTON FOR 30 SECONDS.
That will drain any static electricity that has built up on your laptop
system board and many times fixes the problem of a black screen. After
the 30 seconds re-connect your laptop to the wall power and hit the
power button normally and see if the laptop comes back up.
We have a dis-assebly and repair guide posted on our web site at: www.ccl-la.com/monitor_repair.htm The problem is usually the driver transistors, our guide shows where they are and what to replace to get your monitor back running again.
Sounds like the AD section of the board may be junk. I did the same thing - bought the board from lcdrepair.com.
I submitted an RMA request to get a replacement. The process was difficult due to the pdf form they make you fill out. Lots of errors and no good way to submit it, since it wants to use outlook, but the pdf isn't configured properly to do so. Seems fishy, but I'm giving them the benefit of the doubt for now. We'll see.