Some websites may work, however not all websites will have streaming capabilities. You can surf the web, however streaming may either work, or require an App from that company. We can't suggest compatibility on behalf of other websites unless they register an App with the Smart TV platform.

Thanks for your interest in Samsung televisions.

--Mr.Samsung

This model doesn't have a headphones jack to power headphones.

However, some wireless headphone systems can work with a digital optical out port (which the UN40EH5300 will work with), so if you consider a wireless system that can work with a television's digital optical output, that may work as a headphones solution.

If you have questions on models that may work, your Best Buy salesperson would be a great person to talk to - and they can assist further with your specific needs.

Thanks for your interest in Samsung televisions.

--Mr.Samsung

The term "light engine" usually refers to a DLP system, which we haven't made for several years now. If you can respost with more details that pertain to your question and be a little more specific, we'll be happy to assist you further.

--Mr.Samsung

Yes, absolutely. There is a tuner for Over-The-Air broadcasting, as well as inputs for cable and satellite boxes.

Thanks for your interest in Samsung televisions.

--Mr.Samsung

Yes, both the XBOX 360 and XBOX One (with HDMI planned) will be compatible with this television.

Thanks for your interest in Samsung products.

--Mr.Samsung

Yes, freezing (or any extreme) temperatures will cause damage to your television.

We recommend staying within the threshold of 50 °F ~ 104 °F (10°C ~ 40°C) for a television you'll be operating. Anything outside of these temperatures can cause damage.

Thanks for your interest in Samsung products.

--Mr.Samsung

We don't have measurements of the parts of the television.

Here are our published dimensions with (and without) the stand:

NET DIMENSIONS (WxHxD)
TV without stand: 36.5" x 21.7" x 3.7"
TV with stand: 36.5" x 23.9" x 9.8"

Thanks for your interest in Samsung televisions.

--Mr.Samsung

A wireless keyboard is not supported on this model. Some Bluetooth models are available on the Samsung LED models 6500 and up (2012 models), but this model will only support a wired USB keyboard.

Some HID (Human Interface Device) USB keyboards may work, and you can set that up in the Device manager by going to:

MENU > SYSTEM > DEVICE MANAGER

Thanks for your support of Samsung televisions.

--Mr.Samsung