Planting Corn on Fri. before the rain came in. The monitor on my early 7000 (m2000 ?) worked fine for a while and then all the lights suddenly came on. Checked that everything was OK and kept planting. Refilled the fert tanks, and grabbed something to eat, so shut down for about 30 minutes. next field it worked for a half hour and then all the lights came on a couple times and then stayed on. Is there any user replaceable parts inside this monitor? I have 15 acres of corn to plant and then beans to plant when, or if it dries out. Have had good luck with Ag Express before. Any help would be appreciated. Thanks Steve.