Boy you are a bit of a gambler ;-{ Sadly I think you got snake eyes here. What likely happened was a lightning strike was close enough to hit your system (directly or indirectly)
I always recommend at least a surge suppressor to give your system a fighting chance its also important the other devices that connect to your system also have surge protection as the hit can travel in through any interconnected pathway. As an example lets say you have a wired Ethernet connection to your cable modem. Then a hit to the cable service could travel in through the Coax into the modem and onward to your iMac.
In any case I do recommend disconnecting any unnecessary peripherals from your system when you do go on vacation.
See of you can get your home owners insurance cover the repair. It sounds like you'll need a new logic board here.
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If you can swing it get a good UPS as that offers even more protection.
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Do take the time to get an electrician in to make sure your outlets & buildings grounding are in good shape. If you can swing it, get a good UPS as that offers even more protection.
Boy you are a bit of a gambler ;-{ Sadly I think you got snake eyes here. What likely happened was a lightning strike was close enough to hit your system (directly or indirectly)
I always recommend at least a surge suppressor to give your system a fighting chance its also important the other devices that connect to your system also have surge protection as the hit can travel in through any interconnected pathway. As an example lets say you have a wired Ethernet connection to your cable modem. Then a hit to the cable service could travel in through the Coax into the modem and onward to your iMac.
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In any case I do recommend disconnecting any unnecessary peripherals from your system when you do go on vacation.
See of you can get your home owners insurance cover the repair. It sounds like you'll need a new logic board here.
If you can swing it get a good UPS as that offers even more protection.
Boy you are a bit of a gambler ;-{ Sadly I think you got snake eyes here. What likely happened was a lightning strike was close enough to hit your system (directly or indirectly)
I always recommend at least a surge suppressor to give your system a fighting chance its also important the other devices that connect to your system also have surge protection as the hit can travel in through any interconnected pathway. As an example lets say you have a wired Ethernet connection to your cable modem. Then a hit to the cable service could travel in through the Coax into the modem and onward to your iMac.
See of you can get your home owners insurance cover the repair. It sounds like you'll need a new logic board here.
If you can swing it get a good UPS as that offers even more protection.