TV

Hit RESCAN to Find Missing TV Channels.

A tip from "droplets" in the chatroom. Local channels have been moving and changing frequencies for over-the-air television. If you are missing a channel on your TV, hit "rescan" to find it again! Chances are, the channel didn't disappear into thin air, just scooted over elsewhere! If you have a neat tech tip you want to share, hop into our chatroom at irc.twit.tv while watching The Tech Guy!

Don't Connect Your TV to the Internet

If you're wondering if TVs are secure, they are! Just don't connect them to the internet! It sounds simple, but the temptation can be real for those who want to use apps to go online. If you keep the television offline, it can't secretly watch you (assuming the company behind it is shady). Get an Apple TV or Roku device, which are kept up to date. If your TV gets infected, the issue can even bleed into your network...which would be a huge problem.

Learn the Difference Between OLED and QLED

Sometimes it can be confusing when acronyms are nearly identical. It would be in consumers' best interest to learn the difference between OLED and QLED before browsing for new TVs. OLED stands for "organic light-emitting diode" while QLED stands for "Quantum Dot LED" (according to Samsung). Quantum dots are extremely small semiconductors that backlight a Liquid Crystal Display. Many people think "QLED" was a label intentionally chosen to look similar to "OLED", despite not being the same technology.

QLED versus OLED, and What is Microlithography?

LG B8 65" OLED - OLED65B8PUA

Episode 1603

Tom from Harrisburg, PA

Tom purchased a new OLED TV and it brought him to do research into the average diameter of an atomic nucleus and cutting circuit lines. Tom wants to know how production facilities are able to cut circuit lines so small and address the wiring grid within so that they don't overlap one another. Leo tells Tom that the process is called Microlithography, which he explains is similar to the idea of silk screening: Painters paint on a screen of silk and then apply ink to it, and the ink goes through the part of the silk that isn't painted. It's a fascinating process.

Why can't I get sound out of my TV?

LG 50UH5500

Episode 1538

Al from Roseburg, OR

Al has an old receiver and he wants to connect his TV to it. He bought one, but he's not getting sound from the TV. If he connects it to the Blu-ray player, though, it works just fine. Leo says that he'll need to go into the LG menu setup and disable the onboard speakers in favor of external speaker output. Another possibility is the DAC may not understand the TV signal because it's encoded, while the BluRay Player is using unencoded PCM audio. Al should figure out what audio the Blu-Ray is sending out and see if he can duplicate that setting on the DAC.