CF-28 LCD issue

I have recently come across a CF-28 but have come to find an issue with the LCD screen. Mainly it is not powering on. I think it is dead and just wanted to check with some who have had these longer than I to see if there was anything to check out first. When it is powered on there is nothing on the screen it stays black. I have tried plugging it into an external screen and it works fine. I have pulled it apart to see if there were any loose wires and found nothing. So if it is dead can anyone give me some info on where I may be able to get a new one? Thanks for the help.

 

First, After you boot up the computer, try cycling the FN-F3 a couple of times. This is the hot key for ex/int/both monitor settings. More than that and I'll defer to the heavy hitters who will surely chime in soon. Good luck

 

Maybe only the backlightlamps or the inverter is dead. Take a power torch to look at the display...If u see really nothing, it's an other cause.

 

It sounds like the monitor fuse is blown... Look for a small white fuse on the top of the mobo... I can't remember all the wording on the top but it will have "63V" on it. Check for continuity and if there is none you must replace the fuse. I still can't find a source for an exact replacement fuse but I think it is rated at 1 Amp if I recall correctly. You can use a small BUS fuse in its place. Solder a wire on each end and solder to the mobo... Fire it up and it works like a charm!

Let us know what it ends up being!

 

Once in awhile, the LCD magnetic lid sensor goes bad and thinks the screen is always closed which also makes it appear dim. Whether the inverter is bad, the backlight is dead, the sensor is bad, or the fuse is blown, the result is a dim image, not completely inop. You need to make sure it actually is inop. If you open the LCD cabinet and pull the LCD away from the cabinet, you should be able to tell easily. Give the results and we'll take it from there.

edit: TB, the DC jack fuse is 6.3A. You're right on the LCD fuse - 1A and the part numbers are K5H502300001 and XBADMMCT010U. The first one is the fuse that goes horizontal (parallel to the front and back) and the second is the one that goes vertical right next to the other but which isn't on all of the boards but which is on a LOT of different models (27, 48, 50, m34, etc.). I don't remember if that's actually for the LCD or not though.