I have a 1994 F150 4x4 that the dash does not work at all, all fuses are good, no loose connections, when you start it up you hear a beeping for about 30 seconds and then it will do it again after you have run it for awhile, from what i can tell from online post is that the computer is not reading the dash, could it be a bad computer, the truck has 225,000 on it and is a fixer upper, I want to get it back to good working order as it will be a daily driver. any help on this problem would be great.