Franzis Adventkalender VW Käfer: kein Ton? No sound on Franzis Advent calender VW beetle?

 My lovely wife gave me the Franzis Advent calendar for this year's pre-Christmas time.

Today, the button for the sound module was the "gift of the day" and it was supposed to start the sound module. Unfortunately, it didn't do anything! So a little analysis showed that the battery box prevents one of the battery contacts to actually get contact! 

But don't worry, here is the solution to the problem: Remove the battery box from the base plate and flip it over, like so:

Then, carefully pry off the cover of the battery contacts:

Then remove material with a file in these areas:

Depending on the type of battery you use, the dimensions might be a little different, but the general idea is, to remove material to allow contact of the "+" side of the battery box.

Assembly in reverse order of assembly and your sound module should sound like a beetle!

On December 24th I will post the complete project!