iMac won't turn on - HELP!


lightening hit house , imac won't boot @ all. i've diagnosed well, i'm down power supply or logic board, one?

diagnostic lights first 1 meaning have constant power power supply. when press power button no second light. i've tested power button , it's working fine. power supply make little noise.

can find power supply , logic board $150 online can narrowed down , should try first? i'm thinking power supply can return if doesn't work. experts think?
 

always try 1 can return first it's no brainer.
 


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