Hi!
I would say, going from the position of U603 generally near the power supply electrolytics, etc., that Member Fzakbar has hit the nail on the head!
The OP has nothing to lose by trying one of these AAT3190 devices in the DM3051 – I did have a firmware–bricked DM3058 a while back but pocket–money shortages forced me to pass it on, so I can't offer any better pics myself I'm afraid!
Chris Williams