Could be a as simple as the hyrdraulic pump's drive belt becoming too loose or broke as that will flash the hydraulic charge pressure code after start up and shut down the machine in a few seconds , does it lift the boom or move during the time it is running---------I seen the hours do what you are mentioning before and a new screen was the way to fix it , the new screen has been redone and looks totally different , I think it's easier to read ---the old scren , which I presume is the one you have , had a light bulb in it that is replaceable , and the plastic bulb holder of the dash bulb is made of plastic and breaks up and can be bugt as a pigtail , it isn't your problem of half the numbers displaying , but thougt I'd pass it on to any others on the thread