Marantz SR7005 DIY repair

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Gerlach

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So, i'm Busy sorting out this amp and see if you can get it up and running. On opening of the amp, i founded that one of the F100 fuses is blown, so i replaced it with the same amp fuse. With  connecting the power, the fuse pop again, so this was a sign something is wrong, under close inspection, i found the problem. Blown IC on the SMPS board.
18485884_10155309714407265_6166455998702899556_n.jpg


18485526_10155309714697265_798822386172476600_n.jpg


I downloaded the service manual for this amp to check the diagram and see what sort of IC it is. IC is a TOP258MG.
18422987_10155309732077265_3503303228257813496_o.jpg


Question is now, seems to me i need to import a TOP258MG IC "still need to call communica to find out if they stock". If you go on RS website, they only show the TOP258MN. The info that i can get is, is that the MN is the replacer of the MG.

Can someone with a tech background give me more info please. If i can get this sorted out, then i can place an order and check if this IC will sort the amp out.

Thanks
 

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