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I went to sleep with my phone plugged in, woke up and it wasn't so I decided to put it on the charger. Two hours later I come back and it still is completely dead. Changed chargers, outlets, plugs, nothing. Tried hard reset and it won't turn on. What do I do!!!
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@alex67421 first you want to rule out a bad battery. That would be my first step. Next I would consider checking the ribbon cable coming from the daughter board. Those have a tendency of either coming loose or failing. Consider replacing that. After that would be the daughter board itself. Samsung refers to those as PBA in their manuals. Again, replace it. If that still will not work, you need to check your circuit board. Here are the instructions on the disassembly of your phone Disassembly A03s
Let us know how it works out.
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Hi @alex67421
As a supplement to @oldturkey03 good answer, here's the No Power/No charging troubleshooting flowcharts from the service manual for the phone that may also help.
(click on image)
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