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I had just gotten a package of LED coloured light and all of them work except one. strangely as soon as I unplug it ,it flashes for a second. what does this mean and how can I fix it?

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What kind of power supply does it use? – wallyk Jul 11 '14 at 23:47
a 12volt MR16 plug and if this helps the plug prongs are a little slanted to the side – Nolan Jul 12 '14 at 0:01

Could be reversed polarity - and the power supply may put out an opposite voltage spike when shut off.

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I had checked that and it is fine. thanks but i'm hoping i don't have to buy another one. – Nolan Jul 12 '14 at 2:41

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