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  1. larossmann

    MacBook Air battery backing to life.

    Just replace the battery.
  2. larossmann

    820-3115 trackpad doesn't track

    R5806 torn off by fingernail is most likely. It is right on the corner.
  3. larossmann

    For Anyone selling Services On eBay

    On eBay you are invisible until you get a certain amount of sales. You will show up at the bottom. This means lowering price is the only way you have a hope of being visible, when someone searches by lowest price: as new people will not show up on a relevance search. In terms of seller rating...
  4. larossmann

    820 2610 No Backlight

    What voltage do you get on pin 2 of F9800? What voltage do you get on pin 5 of U9700?
  5. larossmann

    820-00164 no power when flex cable to Left IO board connected

    I get at least 3 machines a month from stores plugging the dc in flex upside down so this is my first thought.
  6. larossmann

    820-2879 no bkl_pwm

    There's three components to LCD power, in this order. 1) DDC circuit power 2) Image circuit power 3) backlight circuit power DDC circuit deals with talking to the computer and saying "hey bro, I'm a screen, of X resolution and Y refresh rate." Image circuit is the part of the screen that...
  7. larossmann

    820-00165 PPBUS-G3H short to ground

    a few possibilities 1) cpu mosfet is shorted and voltage is going to the CPU, cpu still has heatsink on 2) it is one of the caps near the jtag or near the fuse itself 3) it is in the board and you are screwed.
  8. larossmann

    MacBook Pro 13" 820-3115

    Too high. Is there continuity beteeen the two SW pads of u9701 and pin 2 of l9701?
  9. larossmann

    wick desoldering

    Selling what I use now https://store.rossmanngroup.com/index.php/ab20-gootwick-1-5.html
  10. larossmann

    820-3330 Dead short on PPBUS

    The common fault on this are the CPU mosfets for PPVCORE_S0_AXG, Q7550/Q7561/Q7551 area. If you inject voltage you will kill the HD4000. Just remove them. this is ivy bridge not haswell so it won't get killed from a bad MOSFET the same way.
  11. larossmann

    Customer not collecting/paying for repair

    I would say mine is the same. Here the law is 45 days we have to keep it before recycling it. I usually wait until I have no room for anything, which is long after the 45 day period, then go through all the slots and make working machines from the ones where people have not paid. Unless they...
  12. larossmann

    Rossmann Forum - Search Function

    vbulletin search is garbage. There is an update but I don't have much hope, I've been putting off doing it since it'll likely result in some downtime. I'll check it out.
  13. larossmann

    820-3462 High fan speed,

    Does it chime? If it doesn't chime I would imagine the RAM got 12v and this is toast.
  14. larossmann

    Macbook Battery sourcing - Old and new

    I can't. I love you all and I share as much as I can, but this is a finite quantity situation. I can barely get enough for me, and if I post it here, then there'll be none for anyone. Sorry.
  15. larossmann

    [SOLVED]820-00164 No Green Light.

    PPBUS_G3H and PP3V42_G3H are separate. Which one is present with no short? Is PPBUS_G3H 8.16v or 8.5v? Is SMC_RESET_L 3.3v, 0.5v, or 0v? Is PP3V42_G3H present at the dc in board connector? Is the flat cable between the dc in board and dc in cable in good condition?
  16. larossmann

    820-3437 missing cpu core

    Is ALL_SYS_PWRGD present with R8167 on the board? Why did you remove this?
  17. larossmann

    a1286 2 different kinda lcd connector

    You can. Helps if you give the board number. I am guessing you mean the 820-3330 connector. The standard old style connector was used from 2008-2011. The new style was only used for the 820-3330 from 2012, which was not a popular machine: most elected to purchase a retina rather than a classic...
  18. larossmann

    [SOLVED]820-2936 White Screen, No Booting

    0.86v is fine for CPU vcore. Also the capacitors above the PCH are not shorted to ground. Read this post and tell me why. https://www.rossmanngroup.com/boards/forum/board-repair-troubleshooting/22084-3332-ppbus_g3h-7v?p=24887#post24887 Does this beep with no RAM installed?
  19. larossmann

    820-3332 Missing PM SLP S5

    Is SMC_PM_G2_EN present? What is the resistance to ground on PP3V3_S5?
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