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Motherboard is reading 6.95V on the 5V rail, CPU idling higher than normal

Apr 14, 2017
52 (0.03/day)
Sydney, New South Wales, Australia
Processor AMD Ryzen 7 3700X
Motherboard ASUS Strix X470-i
Cooling Alphacool Eisbaer LT240, 2x Corsair LL120, 1x Noctua 3k RPM fan
Memory G.Skill TridentZ 16GB DDR4
Video Card(s) GALAX RTX 2080
Storage Samsung 970 EVO 1TB NVMe boot, 2x 2TB Samsung 860 QVO in RAID 0
Display(s) Dell U2719D, AOC e2343F
Case Corsair 380T
Audio Device(s) Steinburg UR12, Beyerdynamics DT 990 Pro, ModMic 5
Power Supply SeaSonic Focus Plus 750W
Mouse Logitech MX Master, Razer Viper
Keyboard Ducky One 2
Hello I have encountered a problem when I attempted to upgrade the board's WiFi card, repaste the CPU and do some dusting where the motherboard is now reading 6.95V on the 5V rail. This is not a power supply problem as I have tested the board with two power supplies, both give the same reading. My CPU would also be normally idling on the desktop at 40-50° but it bounces around 60-80°C.
I believe the motherboard is dead as it was purchased in 2019, around when the 3700X launched. CPU voltage reads at about 1.4V which I am unsure is normal.