intel mds 225

Adrian Stoness said the following on 9/21/2011 9:42 PM: Well, from the photo you have a raster. That means the IOC is initializing the crt controller chip. So the cpu on that board is running. There is an intensity pot that sticks out the back and a contrast pot that you use a small screwdriver to adjust, as I remember. Try turning down the intensity and adjusting the contrast to see if you can get some characters. If you can't see any characters after fiddling with those pots, you should check the cabling from the IOC board to the crt controller (under the metal shielding around the crt). That cable is a high failure item. Usually you can clean the connections and maybe make the contacts hold tighter to the edge by springing them a bit. As I said before, there is a three position slide switch on the back panel. One position is "diag" for diagnostics. You need to put the switch in that position and power up the system. It should beep five times (I think it is five times) and then display a small menu of choices on the crt. That is your next step. Try that and let us know the result.