Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

paddypage77 Author

Level 1

0 points

MacBook Pro 2011 wont switch on

I know bit about mac's but not an expert although I do work in IT, there have been no spillages.

I have tried below:-

I plug in macbook with power cable, try switching on and nothing happens

Try just to switch on with battery - nothing happens

When I press battery indicator is only flashing on one

Resetting SMC

Resetting PRAM

Made sure nothing is stopping power getting through i.e. dust on DC port on macbook

Different magsafe adapters

Tried another battery from another mac book and it comes back on!

Put my battery back in and it briefly comes back on until power dies on battery

Tried pushing middle pin on DC port (gently)

Obviously I know logic board is not dead, if I replace DC port on Mac Book will this solve issue? as this might be why its not charging battery and also why its not powering from magsafe adapter. I have tried everything I can think and read about

Thanks for your help

Posted on Jun 1, 2015 2:12 PM

34 replies

paddypage77 Author

Level 1

0 points

Jun 13, 2015 6:50 AM in response to paddypage77

Just noticed after leaving second mac book pro switched off for bit its now started charging battery whilst switched off am not going to try second one until I have bought screen cable for it, just ordered thunderbolt cable for it too.

spudnuty

Level 5

7,116 points

Jun 13, 2015 11:24 AM in response to paddypage77

"Do you have any idea what this could be?"

At this level the only way to diagnose this problem would be like Louis is doing here:

https://www.youtube.com/watch?v=885LDVit1Yw

You'll need the equipment he uses and the knowledge at the board level of how these circuits work.

Search his name on You Tube for more videos on liquid spill repair.

paddypage77 Author

Level 1

0 points

Jun 13, 2015 11:38 AM in response to spudnuty

Just had look at that video, there is no way I would even attempt that haha I think I'll just have to charge battery when its switched off.

Does this look like it would stop screen working? as just ordered another screen cable for it. If you look in middle where gold is it looks like its burnt out / pins damaged.

Cheers

spudnuty

Level 5

7,116 points

Jun 13, 2015 1:38 PM in response to paddypage77

"this appears to power up BUT nothing appears on screen, I hear chime, fans spin normally. "

Yup, hook a monitor to it and see if it works that way.

"If you look in middle where gold is it looks like its burnt out / pins damaged."

So that's the problem there, the LVDS connector is fried. Here Louis repairs one:

https://www.youtube.com/watch?v=XqaZpIDEju8

Not sure about this model as regards inverter/backlight but for sure there will be no video on the screen w/ a burned out LVDS connector.

MacBook Pro 2011 wont switch on