Code posted up at github, should help other get started. https://github.com/Emerica/Led_Scroller

While I opened the unit I didn't bother trying to hack it directly.

This table of codes should help you with the remote codes if you have the same one.
Doesnt format very well here right now.

char keys[54][4]={

"RUN","A","B","PWR","C","D","E","F","G",

"H","I","J","K","L","M","N","O","P","Q","R",

"S","T","U","V","W","X","Y","Z","!","?","#",

"$","SHT","DEL","CAP","LAR","EDT",

"RAR","ENT","INS","CLR","1","2","3",

"4","5","6","7","8","SPD","9","0","INV"," "};

long codes[]={0xFFF807,0xFFBA45,0xFFFA05,0xFF38C7,0xFF3AC5

,0xFF7887,0xFF7A85,0xFFB847,0xFF1AE5,0xFF58A7,0xFFDA25,

0xFF9867,0xFFD827,0xFF9A65,0xFF5AA5,0xFF18E7,0xFFC03F,

0xFF40BF,0xFFC23D,0xFF807F,0xFF02FD,0xFF827D,0xFF42BD,

0xFF00FF,0xFF22DD,0xFF609F,0xFF629D,0xFF20DF,0xFFE01F,

0xFFA25D,0xFFE21D,0xFFA05F,0xFF50AF,0xFF52AD,0xFF906F,

0xFFD02F,0xFF926D,0xFF10EF,0xFF12ED,0xFFD22D,0xFFB04F,

0xFF0AF5,0xFF8A75,0xFFCA35,0xFF8877,0xFFC837,0xFF48B7,

0xFF4AB5,0xFF08F7,0xFFE817,0xFFAA55,0xFFEA15,0xFF28D7};