Graupner is still in business!

The USA distributor shut down, meanwhile the manufacturer is "re-structuring", they shut down the plant in Germany and have been moving operations around to China and Korea, I provided a link to their support page.

As far as repairs that folks have been making to the iChargers go, these are repairs made by regular joe's not by an authorized service center, I'd be willing to bet these same folks will be willing to have make the same repair for you if you ask politely.