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Burned/heated components inside a power supply

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H

hafrse

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I have a power supply/NiCd charger with burned components on the primary side , R16, R17, R18 are burned, Q3 Switch FET is shorted on all poles D-G-S . what other componets on top of the burned ones recommended to replace ? U2 LT1241 is suspected since R16 and R17 are burned.
Thanks
 

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