Tried both How to Train Your Dragon and Frozen in 3D and I get no audio and a clear picture but what looks like TV snow/static on top. White speckles that flicker around the screen like static and they show up more the darker the colour.
Tried a 2D Blu Ray and it's perfect, no issues at all. Just tried Thor: The Dark World and none of these issues are present.
I'm assuming (hoping) it's the HDMI cable I'm using. I honestly have no idea what catagory it is, but I'm damn sure it's not a 1.3, so is that something I'll need to buy? I bought 4 a couple of years ago for, like, £1 each and they've been fine so far for my Xbox 360, my 2D Blu Ray player and my PC. I guess they've never been stressed out with a 3D movie until now, though it seemed to play 3D games on my 360 just fine (different TV though).
The TV I'm using this on is an LG42LM760T.
I've just tried it on my TV (LG47LA860W) using the same type of cable and it worked. No speckles, no loss of audio. Took that confirmed working cable downstairs and plugged it in and the speckles and lack of audio returns.
Can I assume it's something to do with the TV? Can any of you gues suggest any kind of setting I might have overlooked that would fix this?
[Edit]: Both TV and player have the latest firmware.