Question Motherboard burning smell + no post

[HoussemBo]

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)

 

[Gam3r01]

What power supply?
If the board is under warranty, and you have no other way to test, you can send it in for an RMA. Either there was and issue and they send a new board, or they will confirm it wasnt the issue.

 

[HoussemBo]

What power supply?
If the board is under warranty, and you have no other way to test, you can send it in for an RMA. Either there was and issue and they send a new board, or they will confirm it wasnt the issue.

PSU : fsp raider ii 550w 80+ silver

 

[HoussemBo]

Update : the dram led is lightning