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Bad psu ruined motherboard?

Shrek

Shrek

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Just for fun, not to disagree.

Diodes tend to fail shorted

Not trying to start any sort of argument or disagree with anyone.
 
Bill_Bright

Bill_Bright

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Well, not to argue either, but it is my experience it is about 50/50 and it depends on how and the cause of failure - and the gremlins inside.

Excessive reverse voltage often (but not always) causes a short, while excessive forward current often (but again, not always) causes excessive heat and then an open.

That said, if the fault is caused by impurities the diode's materials, or some flaw due to a manufacturing defect, the total opposite may occur.

But at the same time, electronics follow the less than concrete rules of "FM" - not frequency modulation, but rather a certain type of magic! So there are no sure bets.
 
Shrek

Shrek

Joined
Mar 21, 2021
Messages
4,844 (3.86/day)
Location
Colorado, U.S.A.
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System Name CyberPowerPC ET8070
Processor Intel Core i5-10400F
Motherboard Gigabyte B460M DS3H AC-Y1
Memory 2 x Crucial Ballistix 8GB DDR4-3000
Video Card(s) MSI Nvidia GeForce GTX 1660 Super
Storage Boot: Intel OPTANE SSD P1600X Series 118GB M.2 PCIE
Display(s) Dell P2416D (2560 x 1440)
Power Supply EVGA 500W1 (modified to carry two bridge rectifiers)
Software Windows 11 Home
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