L505D-S5983 Only One Internal Speaker Works

I bought this L505D-S5983 laptop in November 2009. It has all factory default hardware... I haven't added anything; but for the past few months I have been having issues with the internal speakers. I have read several speaker issues for this laptop on this forum, but no one has a similar problem that I can see.
The problem seems to be that sometimes the left speaker doesn't work (or puts out very little sound) while the right speaker has always worked. It seems to happen fairly often - I will be in the middle or a game, or playing music and the left speaker will cut out... sometimes it comes back, but the majority of the time its usually quiet.
I have made sure my realtek audio drivers are up to date and tried adjusting the levels and such under control panel and the realtek audio manager, but nothing seems to fix the problem. Any ideas?
Solved!
Go to Solution.

 I have the same problem on my a215. at first it seemed to stop when I used you tube then it was sporadic. seems to come back when itunes is updated. then it works for a while and goes out. only  the original driver will kind of work otherwise no headphones. Im not sure that its worth getting  a speaker replaced. I could just buy a new laptop.  I havent been able to figure it out. i KNOW THIS IS A REALLY ANNOYING PROBLEM TO TRY TO PINPOINT.

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