I have a 2003 BMW X5 (e53) equipped with Navigation. It is all OEM. At the system gets hung up and gives a waiting message. At other times, it dies not recognize the DVD and states no DVD. I found on Ebay a service in Colorado that offers a repair for $159. Has anyone used this service? Do you have any other recommendations?

While I have toyed with the notion of attempting a repair myself in that I have worked on laptops, but changed my mind. Your thoughts...

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2014 Infiniti Q50 Hybrid AWD Premium Liquid Platinum
2001 BMW Z3 Atlanta Blue
2003 BMW X5 4.4I Sports Pkg 2-Axle Suspension
2006 Range Rover HSE