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Hey guys, a friend gave me a MacBook Pro A1286 to check. I cannot find a Serialnumber on it, so I can not say what year it is, should be 2008-2012. Probably 2008 or 2009 as the 320 GB HDD got a production date of 11/08. At first my task was only to replace the battery, which died after a few minutes. But when she gave me the laptop she added that it doesn’t turn on at all since two days ago. When I plug in the power supply (not the original one) the indicator turns green immediately or sometimes nothing happens. I don’t know if it’s just the combination of a maybe dead power supply and battery or if there can be more issues on the mainboard. Can anyone give some advice? Thanks in advance! Update (12/19/2016) According to EveryMac its an: MacBook Pro “Core 2 Duo” 2.53 15" (Unibody) 2.53 GHz Core 2 Duo (T9400) Intro. October 14, 2008 Disc. March 3, 2009 Order MB471LL/A Model A1286 (EMC 2255) Family Late 2008 ID MacBookPro5,1 RAM 4 GB VRAM 512 MB* Storage 320 GB (5400 RPM) Optical 8X DL “SuperDrive” Complete MacBook Pro “Core 2 Duo” 2.53 15" (Unibody) Specs
Without a firm idea which model it will be difficult to aim you to the correct guides and/or part which need to be checked or replaced. Are you up to opening your system? Do you have the needed tools? Here’s a useful Apple T/N: How to identify MacBook Pro models If you can at least pop the bottom cover you should be able to identify which model you have from the MLB number located in the memory interface. Update time for a new battery: MacBook Pro 15" Unibody (Late 2008-Early 2009) Battery
I had a couple of those old mac books given to me a few yrs ago one was junk and the other had the turn on problem and it was a HD prob if you have another drive that works in another mac with M. lion or earlier on it swap it in and try a start, some times a second prob can happen like a bad drive. check on the model year of yours and OS it can run. That is what worked for me. Also pull the back and ck for signs of corrosion or loose connections.
