Last night while cutting beans my screen started showing lines thru the characters. Today it got worse as the day went on and the lines got worse and the numbers such as the yield, mst,mph, etc were showing up 1st in 2 rows up/down and finally got to 4-5 rows of the same thing and to the point nothing is barely readable. Rebooting didn't help any. I brought the monitor in tonight and powered it up with the electric adapter I use when hooking it up to my computer. Still all screwed up , so I figure the power source is not the prob. I do think the internal batt. is dead as I have to reset the clock and date every time I start up the monitor.

Any ideas what the prob. may be?? THANKS!!