I have had my TM31 for a couple of years and barely used but today the screen started flashing and had to be turned off plug pulled out to get it to work again (while flashing I could not get anything to work). Then while in use it started beeping (no error showing on the screen) am also having issues with screen not working correctly can't read the numbers (they aren't forming correctly, flashing). I can then turn the machine on another time everything is working fine, next time nothing but problems! For the price & limited use it has had I am really disappointed & am hoping this is a quick easy fix, help please