MBP Modtherboard repair help wanted

Discussion in 'MacBook Pro' started by sirtet, Aug 7, 2013.

  1. sirtet macrumors newbie

    Joined:
    Aug 7, 2013
    #1
    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:


    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 ;-)
     
  2. old-wiz macrumors G3

    Joined:
    Mar 26, 2008
    Location:
    West Suburban Boston Ma
    #2
    i think you will have better luck on ifixit.com

    the motherboard schematics are apple proprietary info.
     
  3. sirtet thread starter macrumors newbie

    Joined:
    Aug 7, 2013
    #3
    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...
     

Share This Page