Also, will trying isopropyl alcohol on the LCD screen help if there is already this black line in my old timex marathon watch or is it just to late. If your only suggestion is to call timex and ask them for A replacement for this LCD screen that option won't work as they dont make this watch anymore or service parts for this watch anymore. So any help as to if this watch LCD screen can be repaired would be greatly appreciated. Thanks and hope to be here from you all soon. Robert.