Are you sure that is how the law works in Austria?
Ie. As far I a know in Ireland self removing/destroying tuner from a device that was originally sold capable of receiving TV does not automatically relieve you from paying for TV licence.
There was a nice article on the web about it, can't find it now ;(.
not 100%.. its really hard to find clean informations about this. what I know for sure is that you dont pay for broken TVs or Radios.. and for TVs with no tuners (public viewing devices).
There is too many strange informations about that Company here in Austria, and it seems they will tell you anything just to make you pay. For example, the law here clearly say that if you have
internet you dont have to pay taxes for radio... even tho you can stream radio. Still, this company which is really a company and not the government itself... tho they work with government... says the opposite. They want you to pay for radio if you have internet. There is enough cases where people did fight with them about the internet and radio argument and they won.
The easiest would be to call that company and ask, but I really cant relay on the informations they tell me, and paying a lawyer just to get me that information is more expensive then buying a new TV with no tuner :/