Hi,
The DigiMax FS is no longer able to be repaired, it has gone end of service on June 30, 2015.
http://www.presonus.com/support/repairs
However you can try to contact Quanta Music to see if they can still assist.
Quanta Music
Condominio Villa Lobos Office Park
Av. Queiroz Filho, 1700
Life Tower, Sala 1004
Vila Leopoldina - Sao Paulo/SP
CEP 05319-000
Phone: (11) 3082-5653
Website | Email: [email protected]