It is often expensive and time-consuming to replace a TV set, so an adequate surge protector may prove a worthwhile investment. An important factor to consider is the level of joules a surge protector offers.
Electronic accessories manufacturer Belkin recommends its 1,411 joule model for most TV sets, or its 2,444 joule unit for projection televisions. ReviewSurgeProtector.com similarly advocates a minimum level of 1,500 joules for TVs.
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These recommendations are targeted at people with fairly expensive TV sets. If you're on a budget and own a small older television, consider a discount-priced protector with a lower level of joules. It's still better to have more joules, but a five-dollar unit will at least provide some surge protection.
If a roof antenna, cable or satellite connects to your TV, power surges can come from these sources, in addition to the electrical outlet. A protector with at least 1,400 joules and coaxial cable jacks will thoroughly protect a TV from both types of surges. One example is the Enercell 61-188.