820-3437 Boots but doesn't do the 3 fan spins

bjf

Member
This board is working but it's not doing the 3 fan spinups when you first plug it in, it just spins up once and boots like a 2015 model. I attached some pre-ultrasonic cleaning pictures. Any ideas what might be causing that?
 

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2informaticos

Administrator
Staff member
"This board is working"
Does it really work, or just stays on?

You must check for corroded/broken traces and components with bad terminals.
You can also try new BIOS.
 
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