ok i was looking this radio over cause i took the mic jack out cause where it goes in the front it was broke when i tryed to hook the wires back up when i would plug the mic it it would squeal anyways so i looked over the board and found that d28 and d29 was burnt i got a old 148 gtl for parts and was wondering if you guys could tell me what i ned to replace these cause they are burnt and cant get the numbers off them