Acer laptop internal speaker not working

Acer Aspire 4720z ac adapter (compatible...
January 19, 2011 at 00:42:14
Specs: Windows XP, Intel T2370/1GB
Acer notebook model no. aspire 4720z. problem is internal speakers are not working, but external speaker or headphone work well.
in line with the same, I request you to provide the necessary technical details to solve the problem. thanking you in advance.

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January 21, 2011 at 11:42:35
Typically that means the port is broken or disabled on your laptop. We know its not a driver issues because external speakers work fine. Were you having any issues with you on board speakers or did they just stop one day? Im leaning towards hardware failure.

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