Hi, I'm Nathan.Sorry to hear that you're having trouble with this but I'll do my best to help you.
Unfortunately, this part is no longer available for purchase. Typically, case parts such as this are not stocked in any quantity, even for current production models. Your tv is a now an older model, with production discontinued years ago. For older or discontinued models, it is nearly impossible to find them, and no dealer or part source has them in stock. Even when they can be found, the parts tend to be very expensive (sometimes several hundred $).
If you want the factory original base, you can watch for it on ebay, or check with local tv repair shops who may parting out a defective tv.
Other than that, your best option will be a generic/universal base, or to wall mount the tv. Here is an example: http://amzn.to/1jibnBH or http://amzn.to/1jibux9
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