HDMI audio problems with my sharp LC42D64U

the problem is that your cable box is putting out too low of a bandwidth to your tv and is cutting out completely. Since its all digital either its there or not. try switching to componant cables. Cable boxes only support up to 720p anyway so you wont sacrafice any quality.

Hope this helps

I had the same issue with my Samsung. The sound would drop with the HDMI connection from time to time, sometimes two or three times per hour. I checked on Samsung's website and they had a firware update for this particular issue (I guess that I had sent me too many emails regarding this problem and they finally put an update for it.) I updated the firmware last night and TV was running for a few hours without any problems. Check on the manufacture's website of your TV and you might find a solution for it.

Using the component cable connection solves the HDMI cable audio problem with the Sharp LC42D64U.

Thank you for your help