Question Motherboard burning smell + no post

Sep 13, 2022
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Hello everyone
i have a ryzen 5 1600af
b450 aorus elite
i don't think the other components matter since the problem was in cpu side
i had this issue yesterday : i was on very normal pc usage (just discord chat) and suddenly my pc shutdown (kept running but not posting) and there was a plastic burning smell
now the smell disappeared even if i try to run the pc again but it still dosn't post
how can i check which is the faulty components without having spare parts (i just wish it is the motherboard since it is under warranty
Notice : i disasembled the pc. clean it up (after the issue) and didn't find any burning in any component
another notice : since day one there is a red led always lightning in bottom right of the motherboard (5 months now)