All the best and Happy NEW Year2010
perhaps you need to contact the manufacturer for a manual, and if they oblige you can think of servicing it.
Even if the tracks are burnt
it is easy to locate the print path and you can bridge them by wire pieces.
If some components are damages,( they might be) , then perhaps better to call it a life for it and have a new one. But analyze why it happened, and what to do to prevent such things.
Televisions with HOT chasis are generally culprit when external devices are connected.
Such cases, it is preferable to have isolation transformer for the TV under concern, such that grounded connections like cable, STB etc could be connected without damage.
You need to carefully analyze before replacing one.