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Had logic board replaced, now completely dead. Charger does not light up. Charger, & power source good. How can I test to see if this is a battery issue?
If you have no light on the MagSafe you’ll need to check it as it’s likely damaged Apple Portables: Troubleshooting MagSafe adapters and make sure you are using a real MagSafe charger OEM MagSafe Chargers vs Cheap Imposters: Teardown for Truth. Inspect the systems MagSafe connector make sure the contacts or clean and shiny if not you’ll need to replace the MacBook Pro 15" Retina (Late 2013-Mid 2015) MagSafe 2 DC-In Board follow this guide MacBook Pro 15" Retina Display Late 2013 MagSafe DC-In Board Replacement
I think that If someone did replace your logic board you need to check with him first to see what’s the problem because if you try to make your stuff and was the logic board installation there is not way to prove that was a bad logic board installation or the logic board have fail. Regards