I wondered about that too, how they can be currently selling a radio that cannot be repaired. Despite the fact that my older radio has the same model number as the the currently new AR6201 radios, George at Becker-USA says (in his own words) "Unfortunately, the very first
AR6201’s are considered obsolete due to the drastic change of SW and HW".
As a follow-up, George (at Becker) offered me a chance to trade my non-working AR-6201 for one of the current design refurbished AR-6201's for approximately $200 less than the cost of a new one.
And keep in mind that all the Becker radios are EXTREMELY sensitive to voltage spikes that often occur when starting and stopping an engine. Not so critical for pure sailplane pilots.
My Becker transponder went back to Germany for repair for that mistake.