Hi, I have a TM190 with the following problem: when I start the tractor and the 3pt hitch doesn't move up or down the tractor doesn't drive neither forward nor backwards. Sometimes I can turn it off, wait a while and when I turn it back on all works well again. If the tractor doesn't work the yellow sign with the book is off but when the tractor works the sign is blinking. Any ideas? I am out of ideas.