820-00840 No boot

PhilipC

New member
Nothing on screen or HDMI through usb-c, trackpad is clickable
Cpu gets hot but coils L7410/20/30 are all at 0v all other coils are measuring what they should be

Board has minor signs of liquid arround Q8400 area but no corrosion anywhere to be seen
 
Last edited:

2informaticos

Administrator
Staff member
An USB mouse get light?
Better to check with an USB OSX pendrive, with Link LED; if flashes, that confirm 100% USB activity.
Disconnect internall SSD for this test.
 

PhilipC

New member
No blinking on thumbdrive, GTVR_FCCM is reading 0v is this normal?
Usb-c amp meter just came in and its reading 19.7v 0.55a when on is this normal?
 

2informaticos

Administrator
Staff member
That is for graphics voltage and is the last comes on.
As you cannot confirm USB activity, don't wait video...
 
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