The picture shows a schematic which is similar to Mac Book Pro's power input circuit. The series components L1, F1, T1, T2 have to draw the full power, so those are of interest for us. With an ohmmeter you can check these parts.
L1: Since I could not figure out the manufacturer of this common mode choke I recommend to use a new MagSafe PCB.
F1: According to the printing on this part it is very likely that this is a Littelfuse 0469006 6A fuse.
T1, T2: Both MOSFETs are HAT1128R type. Since this part is obsolete I took IRF9317PbF
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