My Bose Soundlink Colour isn't turning on

My Bose Soundlink Colour isn't turning on

I havn't used it for about a month and a half but when I charge it the light, lights up and flickers orange until it is fully charged but after I unplug it i press the power button and it doesn't turn on. Even when it is connected to a power cable it doesn't switch on it just flickers that the speaker is charging. Anyone know how I can fix this?

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