Nespresso D250 - Small Water Leaking

Question

I have about a 6 - 7 yr. old Nespresso D250 coffee machine. It has a miniscule (drip, drip) water leak from the underside, just slightly left of the capsule holder housing. Any ideas on an approach to fixing the leak? I had asked them (Nespresso) if they could assist me in repairing it myself. They said it maybe a water tube leaking. They also want to sell me a new machine OR a program that have a remanufactured machine. The better deal would be if I can make a simple repair myself. I'm trying to remove the top with no avail. Anyone?