The 68 uF capacitor is a bipolar capacitor & not a standard electrolytic capacitor. The best resolution is to replace the aggregate PCB. At the moment the capacitor is not available as a single item.
There is a manufacturer in Germany, however the catch is they would like you to buy 500 at about £6.00 a pop!
Paul Doolan, Neonatal Technical Support, Draeger Medical UK
