MacBook pro 2009 turns on then not

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I recently acquired a MacBook pro 17" Mid 2009. I got it fairly cheap for parts. After check it out. I found out that it didn't turn on.

I tried everything untill I got it to turn on by removing the battery and plugging it back in and pressing the power button.

After it turned on I installed mac os x El Capitan on it.
With no problems or shutdowns.

After I turned it off. I tried to turn it on the next day and it did nothing when pressing the power button.

So I took the cover off again and plugged and unplugged the battery many times again untill it turned on again.

Even after leaving it for about 4 hours it doesn't turn on. I have to keep messing with it to turn on

What could cause this issue?
 

chscag

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Welcome to our forums.

What could cause this issue?

Bad battery?

Bad power supply?

Logic board?

That's probably why you got it cheap. ;)
 

pigoo3

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I recently acquired a MacBook pro 17" Mid 2009. I got it fairly cheap for parts.

If it's a parts computer...why the concern about 100% operation? As soon as it's disasembled for parts...it ain't gonna work either.;)

- Nick
 
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Try an SMC reset?



I'm guessing they probably already inadvertently did so, ie:
So I took the cover off again and plugged and unplugged the battery many times again untill it turned on again.

Or sure close anyway... ;D

But regardless, I'm wondering why their concern and as Nick has already mentioned, it was purchased as a parts machine.






- Patrick
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pigoo3

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It would also be great to know how the computer the OP purchased was advertised.

- If it was advertised as 100% working.
- Or if it was advertised as a "parts computer" only...with no guarantee's that it worked.

For example if it was a water-damaged computer (that the seller may or may not have mentioned)...then all bets are off as to its working...not working...or kinda working.;).

- Nick
 
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its working...not working...or kinda working.



Sort of like being kinda pregnant, or not... ;D





- Patrick
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I thought this was a hardware help forum.

It was advertised as for parts only. From the seller. I fix laptops mostly windows PC's I'm new to MacBooks. I have a MacBook 15" with a cracked screen. So I figured I bought this other MacBook to use the screen but when I bought it I didn't know it was actually a 17" MacBook. I had no problem with it. I checked for liquid damage and everything is clean inside. So I figured it could be a simple fix. That is the reason why I tried to fix it instead of parting it out. I did manage to find out the issue

It turned out to be a bad resistor P7771. Which I believe is a common problem with these machines.
 

pigoo3

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It turned out to be a bad resistor P7771. Which I believe is a common problem with these machines.

Thanks for the update. And congrats on getting what was purchased as a parts computer into what sounds like a fully operational computer.:)

- Nick
 

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