That is a good question - one that no one may necessarily be able to answer. Some models and brands are more prone to certain types of failures due to weak design. Others have no reserve capacity in the event of local power issues, as many rural localities and even some urban areas are prone to voltage surges and spikes. The best recommendation is that once you repair the set this time, get an UPS to protect it from power source fluctuations. If it fails again after that, it is a problem from within the set. Flat panel sets pull very little power, so you won't need a large capacity UPS. You can even protect your home theater and game console(s) with it for another level of protection.