I have the fallowing stet-up: PC + 3D TV Philips 46PLF5507k + PTA 508 glasses. I conect to the TV with a VGA cable. The problem is when I play a stereoscopic movie the TV doesn`t recognise that the signal is 3d and I can`t select from the TV 3D setings - Side by side. If I am browsing Youtube from the smarttv app, and I play a 3d stereoscopic video, the 3d works. The question is how can I get it to work from PC? Is the VGA cable a problem?