No power, no charge, no battery indicator. Dim green LED on Magsafe

No power, no charge, no battery indicator. Dim green LED on Magsafe

My lady's MBP (13", 2009) is quite dead. The night before, she said it was exhibiting some poltergeist-y mouse movements and application opening. It was also running slow, apparently. I checked it out the next morning, running DiskUtility which repaired a few permissions/errors (don't remember exactly) and I didn't have any issues with input apparitions or phantom keystrokes. I remember it was running a little warm for my tastes, but nothing crazy. I figured it just needed to get some dust cleared out of there.

Asked by: Guest | Views: 209

Total answers/comments: 5

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bert [Entry]

"So intermittent light on the magsafe.

Check U6901. PP3V42_G3H at pin 5 is 3.42v, or less? This is the most common issue on this older 820-2530/820-2879 logic board.

This video directly applies to your older board where they placed the onewire circuit components in the corner where moisture comes in. Let's rule this out before even bothering to troubleshoot anything else because it is such a common problem. This is a fairly high resolution video with good images of the exact area I want you to measure, and follows along in the schematic to explain what's going on.

https://www.youtube.com/watch?v=sI7rvFLU..."

bert [Entry]

"Did replacing the logic board do it? I've replaced the i/o board as you did; the logic board; and even the keyboard, thinking maybe there was some kind of short in the on/off button. Still dead.

Symptom is bright green magsafe turns to very dim green after a couple minutes. Machine does nothing."

bert [Entry]

Does this apply to Mid 2012 Macbook Pro non-retina?

bert [Entry]

"I'm following this thread... As my late 2011 MBP is the same! Here's my account of what I did:

My MacBook Pro late 2011 not-turn-on problem SOLVED:

Unibody Battery Indicator Light Board connector was unplugged & re-plugged in immediately.

My unibody laptop had these symptoms... But none of the solutions below here worked this time:

- battery would not charge

- magsafe was not working properly and not charging battery

- disconnect battery, hold power button for 5 seconds then connect with only magsafe and continue to hold power button for 10 seconds, did not work

- battery indicator light did not work

- SMC reset, PRam reset and fn-contro- command-power combo button press would not turn on MacBook

Hope this helps someone...

Update: the laptop did turn on a few times... But still not charging via the plugged in MacSafe charger. Once the battery reached about 30%, it shut off abruptly... Not shut down! Since then, it returned to square one. ..& would not turn on again"

bert [Entry]

Not sure if this is of any help, but I just fixed a dim green light by unplugging the “battery indicator cable connector”. I went through disconnecting everything one by one and connected the charger cable after each thing I removed until the charger turned bright green, might be worth a shot. At least this way of tracking down the problem worked very well for me.