Power charging indicators not working

am charging my Acer laptop model 4810TZ but it wont indicate the light its charging. i press the power light indicators for charging it is only blinking. what does it mean?
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More about power charging indicators working
  1. How old is your Acer? 4 posssibles - AC adapter malfunction, Dead battery, loose DC jack, Charging cct malfunction on Motherboard. Try borrowing a battery/adapter from a friend, gentle try to move the plug in the DC jack to see if it improves, if all these fail it's probably the charging cct on the board, which requires board replacement.
    If the DC jack is loose, it can be re-soldered or replaced.
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