You never did post the results from the self-test procedure that I posted for you awhile back, what DTC's were displayed?? I would not recommend opening the unit and yanking out the CD's unless you are trashing the old unit and replacing it w/ another(small springs,electronic switches, etc. can be damaged). There are quite a few nav units on ebay in the $200-$600 range, but I would only buy if they are close enough to pick-up & test in your LS before paying(too many scammers on ebay, don't follow shipping mode instructions on top of nav unit or know the unit is defective & blame it on shipping damage when you complain). If you have a newer version map DVD than my 2003 map, for a copy of your map DVD I will remove the CD's & check your unit over to find the fault(you pay for the shipping of the head unit). Let me know if you buy another nav unit and wish to sell the 1st one for parts.