Where's our very own resident consumer adviser TJ when you need him….? 😉
Reality is the '6 year' rule came about due to case law, however that doesnt mean everything has a 6 year 'warranty', there are far too many other factors to consider on a case by case scenario when making a claim for faulty goods. You could reasonably argue that a TV should last for more than 18 months, and you could demand a full refund/replacement from the retailer you purchased it from under your civil rights as a consumer made under the Sale Of Goods Act. (However, depending on circumstances you may have to give the retailer the opportunity to repair the TV – your contract is with them not LG)
Speak to this lot for more info rather than relying on a group of ill informed MTB'ers on the internet (sorry guys!)
http://www.consumerdirect.gov.uk/
BTW – the actual Trade Descriptions Act no longer exists and wouldnt apply in this instance anyway.