Chosen Solution

So here is the rundown: I got this display on Craigslist for cheap. When plugging in, it supplies my 2011 MBA power via MagSafe but: -The panel shows no signs of life -System Report on the MBA doesn’t register any external USB or iSight devices When opened, the power supply has some residue on the front of the board. Going through the deep dive for Dead Unit/No Power in Apple’s technician PDF:

  1. No
  2. No, unless somehow the MBA 2011 11" isnt a ‘supported system’
  3. No voltage on TP11
  4. No voltage on TP61
  5. No voltage on TP61 or TP13 Conclusion: Replace logic board So even though there is some residue on the power supply board, there still seems to be issues with the logic board. When I unplug the 7 pin power connector from the logic board, it has these voltages from left to right, 0 - 7:
  6. Nothing: zero volts to anything else
  7. Ground
  8. 6V to GND
  9. 6V to GND
  10. 6V to GND
  11. 30V to GND
  12. 30V to GND I am left thinking that my Logic Board needs some help.. Please let me know anything else I can post to help with a solution Thanks, Timothy

@warkentim have you cleaned your board yet? what do you have going on in those yellow square marked areas? Just some goop or what is that?

Since you have no power on TP11 (I assume 12 and 13 neither) you are not getting power to the board. Check the transformer on the PSU to see if you get power to and from it. Looks like the PSU had some damage to that area.