My monitor won't lite up
My monitor won't lite up. The power button is lite (green) but no display.
22" 16:10 LCD monitor introduced in 2007. This monitor may have color accuracy problems in some releases of Mac OS X without calibration.
What I'd suggest you do is check for an image with a flashlight. If it's stable, then it's likely a bad backlight tube or capacitors. Beyond that, the capacitors should be inspected. In many cases, a complete recap will fix the problem.
If the capacitors look okay or a recap didn’t work, the problem usually lies with the power supply inverter or the panel backlight. Sometimes this is fixed with a power supply, but it rarely fixes the problem. Mine lasted ~1 year with a recap and ended up failing when the backlight burned out on one end (usually black). This is usually indicated by one end being darker then the other. I don't recommend removing it because it's hard to do without damage, but if it's not working it's safe to assume it’s a backlight tube failure.
The problem in your case is it's likely like mine where a new power supply won’t fix the problem because it’s a bad panel. Since the panel is old and out of production (and expensive), you’re better off replacing your monitor and recycling this one. Beyond attempting a capacitor replacement, it isn’t worth repairing the monitor.
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