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Dec 16, 2014 10:59 AM in response to ashish@macby pedro d,Hello there, ashish.
Great job so far on isolating the adapter for your MacBook Pro. The following Knowlege Base article offers up some additional steps for troubleshooting issues with a computer not turning on:
Troubleshooting: My computer won't turn on - Apple Support
If your computer won't turn on, try each of these steps:
- Verify you have a good connection from your Mac to the wall outlet by confirming the power cord and adapter if present are securely connected and plugged in. To check if the wall outlet is working, plug in a lamp or other electrical device.
- If the wall outlet is working and you continue to have no power try another power cord or adapter if available. If it works you may need a replacement cord or adapter.
Note: See Apple Portables: Troubleshooting MagSafe adapters for further troubleshooting with MagSafe adapters.
- Disconnect all accessories that are plugged in to the computer, such as a printer, hub, or other mobile device.
- If your Mac supports user-installable memory, solid state drive, or hard drive, and you recently installed any of these, make sure they are installed correctly and are compatible with your computer. If possible, reinstall the original memory or drive into the computer to find out if the behavior persists afterwards.
- Reset the SMC.
- If you are still unable to start up your computer after trying each of these steps, visit an Apple Store or Apple Authorized Service Provider (AASP) for further diagnosis. If you plan to visit an Apple Retail Store, make a reservation at the Genius Bar using http://www.apple.com/retail/geniusbar/ (available in some countries only).
Note: Diagnostic fees may apply for issues not covered under warranty or the AppleCare Protection Plan (APP).
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.
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Dec 16, 2014 11:08 AM in response to ashish@macby OGELTHORPE,If you can start your MBP, post this from System Information>Power:
(have your charger connected)
Also run an Apple Hardware Test:
http://support.apple.com/en-us/HT201257
Note an error free AHT is not defiintive.
Ciao.
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Dec 16, 2014 7:47 PM in response to pedro dby ashish@mac,Hi Pedro I followed all the steps you have mentioned and also gone to Apple Authorized Service Provider but they confused me saying that my logic board has failed but I think it can the dc-in problem too. So, can you tell me how to know if my dc-in is the root problem or the logic board. Please explain
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