MBP Modtherboard repair help wanted

[sirtet]

I try to repair a A1286 MBP, mid 2010 15" (820-2850 A Motherboard).
My Electronics-knowledge is ok, but i could need some Macbook- expert-advice.

The Notebook has water damage, and before maybe ordering spare parts, i want to find out as much as i can about the damage.
Initially it was plain dead, even after thorough isoprop.Alcohol cleaning.


Findings:
After a year laying around, now it's a bit better:

• pwr button not working, i turn it on via pads on Motherboard, not booting.
  (have replaced a mbp keyboard before, easy, but lots of screws...)
• Battery is charging.
• Screen black.
  (LVDS Connector has the leftmost 2 pins corroded, sure needs replacement.)
• via hdmi cable, no ext. screen. (turn on, close display)
• Without ram, i get 1 blink every 5 sec (no beeps), seems normal no-ram error, according to blink definitions.
• With ext. keyboard, i can eject a cd upon boot by pressing F12.
• Powering on with all connectors (excl. keyboard):
  
  • pwr led on, fans spin up
  • hdd spinup
  • some hdd access sound
  • dvd init sound
  • pwr led off
  • some hdd access sound

Resources found so far:

• Service Manual:
  http://tim.id.au/laptops/apple/macbook/mbp15_mid2010.pdf
  (site has many more)
  
• Schematics:
  https://forums.macrumors.com/threads/1565344/
  
• Power on Self-Test Beep/Blink definitions:
  http://support.apple.com/kb/ht1547

Questions:

• Is there a way to power off / Reset by shorting some Pins on the Board?
• Would i normally get something on an external screen before booting? (if yes, also via hdmi, or maybe only vga?)
• To better work with the schematics, are there any board layout infos around? (fuses, lvds pin ordering, test point locations...)
• any of my symptoms sound familiar?
• general tips on how to proceed?

Thanks to the manual- and schematics- posters... and hopefully some responders ;-)

 

[old-wiz]

i think you will have better luck on ifixit.com

the motherboard schematics are apple proprietary info.

 

[sirtet]

Thanks old-wiz.

Well, i saw quite a lot of hardware-repair threads here, which seemed like going well, that's why i came here.


i'll try ifixit too...