I, this last week, too have been encountering a display problem. Funny thing is that it happened last saturday, rectified itself, had been fine all the way through the week and then reapeared yesterday, Saturday
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The problem im having is several things. First is the screen some times just goes blank untill you switch off the engine and restart. an other is, the screen is fine and when you start the engine, the dispaly freezes for a short period then comes up with jumbled information and some hiroglyphic characters and reads no usefull information at all, other times after the screen freezes, it flickers and is then fine, again aother times its fine then sudenly freaks out with characters where there shouldnt be.
I suspect either a grounding issue (no surprise really after the weather/puddles encountered) or interfearance of some sort, could also be a broken connection some where.
Havent realy looked at it but if any one has any pointers before i go pulling things appart