Unfortunately because this is such an old model television, all parts for it are long discontinued, and there are very few sources for new remotes.
Typically there are 3 options here:
1) An oem/factory remote (exact replacement): http://bit.ly/1QZNrjY though this is very expensive, it would almost be better to just buy a new tv at that point
2) A "substitute" remote, which is like a universal remote but programmed exactly to replicate your original one even though it looks different: http://amzn.to/1o4j0xH
3) A basic universal remote which may operate some (but not necessarily all) functions of the tv.
4) A higher quality and fully programmable universal remote, which will operate all your devices: http://amzn.to/1JWPjZp This will be your best option
An OEM remote is ideal, because it will be exactly what the tv came with and work for all functions.
For older tvs and more obscure brands, these are nearly impossible to find though, or are extremely expensive. Universal remotes in general don’t’ work well or at all (only a few of the most basic functions), which generally leaves you looking at higher end universal remotes as the only option.
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