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I got this MBP 17 with board 820-2914
No video, and chime each 2 seg. I removed the GPU 0084 and chime one time and mouse is on. I put 0005, chime one time but still black screen. Should I add/remove some resistor?
This board seems very clean and no liquide damage. If I disconnect hard drive it power and blinking folder appear and it keeps on. BUT
If I connect USB drive or Hard drive to usb it start loading and power off in 12-14 seg.
When I connect magsfe ppbus appear at 12.59 but 2 seg later it goes slowly to 11V-10V-9V....1V
I removed F7000 and same thing.
acok - 3.25V
acin - 4.45V
dcin - 18.57V
SDA and SCL - 3.40V
17,18 and 27,28 3ohm and 20ohm