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Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
My dad brought home a 15" lcd panel from work because it didn't work any more and sending it in to be fixed cost more than a brand new one...
In any case, it wasn't the backlight that was dead The first thing I did was fire up the tubes, which went well, then I figured out how to run the power supply, which went equally as well, but after jumping on the backlight I found 2 problems.
1. The right half of the display is squashed horizontally about 1", with the extra space being filled with a white (or sometimes multicolored stripes) bar. I am guessing that this is being caused by some sort of clock oddities? I carefully checked/reseated all connectors (he had pulled it completely apart, I put it back together), but to no avail. 2. It doesn't like any input signals. I tried hooking up up to a computer without a hdd so I would get the standard vga out, but it still goes into 'no me like' mode, where it fires up the display/backlight for a fraction of a second, waits a few seconds, and then powers it up again (this behavior is what made my dad think it was a backlight problem). The picture looks fine when it is powered up (except for the fact that the right half is screwed up), but it just won't stay on. I also tried connecting it to my laptop and gave it some 1024x768 to see if it needed it native resolution, but it gave me the same problem.
So, do any of you guys know what is wrong? I would really like for this to work... Although it isn't a packaged display (I think there is a rack mount case for it, but all I have the the panel/driver/inverter mounted on a piece of sheet metal), I can find somewhere to put it. I suppose I got 4 (yes, there are 4) ccfl tubes and a pretty powerful driver (it puts out a regulated 0-20w from a 0-5 drive signal)
I think he has another one, so I might be able to mix-n-match the boards (or if I am really lucky the second display will have a dead backlight so I can switch them) to get at least one display going...
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LCD Repair
