I am not familiar with that problem but I think one other person on the forum reported a similar issue, I don't recall any response when advised to try the method without the LCD screen. It does sound as if there is a problem as you have obviously been reading the manual and I am sure followed it to the letter. I would suspect the problem is with the powerbase itself as the display is just that, nothing more. You might want to consider asking scalextric to check the firmware on the base and update it if it can be done. The base can be connected to a PC with a Special cable and you could do that yourself, but please note the cable is a special one and using a standard ethernet cable may have caused the problem in the first place! The problem is the forum is not the place to ask scalextric, you need to use the "Contact Us" link under the Help & Advice tab above.