bigboss said:
Well, John Lewis is well within its rights to do that. As per the warranty terms, a repair is the first port of call.
This probably sounds harsh (I don't mean it to), but as BB says, JL has a responsibility to make sure you have a working GT50, and not a brand new (higher specification) television. When talking about a replacement, do you mean another GT50, or a brand new VT65?
None of that means you should be happy about your television developing a fault; and you're of course right to demand that your TV works properly.
On the 3D glasses front, TPS optimise their specs to work with different televisions. Craig at TPS will talk you through this if you're not sure how to set the glasses up. It's actually very straightforward; and you only need to select the correct viewing mode the first time you use the glasses. After that they work normally (i.e. you just turn them on and off). I was a bit sceptical about this, but it does make a difference. I couldn't begin to tell you why.