First 6 months it's up to the retailer to prove it's faulty (Or Not) and after 6 months it's the customers responsibility.
Dead pixel guidelines are by the manufacturer and not retailer. It's up to the customer if they feel they warrant a claim against the retailer. The only way you would really win a case is if the dead pixels in some way interfered with the ability to use the device for it's intended purpose.
Remember anything the manufacturer states is in addition to your statutory rights which are with the retailer.
If Argos are refusing to do anything then you need to ask them to prove the TV is not faulty and quote them the sale of goods act stating this.
Dead pixel guidelines are by the manufacturer and not retailer. It's up to the customer if they feel they warrant a claim against the retailer. The only way you would really win a case is if the dead pixels in some way interfered with the ability to use the device for it's intended purpose.
Remember anything the manufacturer states is in addition to your statutory rights which are with the retailer.
If Argos are refusing to do anything then you need to ask them to prove the TV is not faulty and quote them the sale of goods act stating this.