Brand new emerson led tv has this red tint to it. I have the cable hooked up to the at&t u verse cable box and just a basic cable cord going from the cable box to my tv. Would a hdmi cable fix this 
You would definitely want to try using a HDMI cable.
Your current hookup requires signal conversion too many times resulting is quality loss and more chances of introducting errors and this might be where your red tint is coming from.
Assuming AT&T is providing you digital signal at 720 resolution or higher, the box then has to convert back down to composite video (340 resolution) in order to send it to your TV over the basic cable cord. Your TV then takes this low resolution signal and blows it up to fit your nice new flat screen TV.
Skip all that and use HDMI and you'll get the best picture that your provider is sending you. The digital input stays digital and is passed onto your TV over the digital HDMI cable with no loss to video or audio.
SOURCE: says no signal when switched to hdmi when there is one.
Have the same problem with a 532H - but here is what I did to resolve the issue:
1) Click your Menu button on the TV remote.
2) Go to Screen (click the right button)
3) Go to Main Picture Source (click the right button)
4) Select HDMI (click the Menu button when done)
SOURCE: Need help hooking up TV, BluRay, Home Theatre & cable box
I found that since the Panasonic TH50PZ80U TV has only 2 HDMI ports on the back of the TV, the best solution for me was to use component (red, blue, green) cables to connect the Home Theatre to the TV. I suppose I/you could connect the home theatre to the HDMI port on the front panel, but I don't want cables hanging out the front of the TV (personal preference). Unfortunately, I am no longer able to use the VIERA Link functionality available by connecting all Panasonic components to each other using HDMI cables, but I feel it's a small price to pay for the incredible picture quality acheived by using the HDMI cable to connect the HD Cable Box to the TV. I may yet be able to control everything using the HD Cable Box remote, but I haven't gotten that far yet but I've got Comcast coming on Saturday and hopefully they can let me know if this is possible: let me know if you have a solution.
So here are the components and the cable types used to connect:
I hope this helps someone else.
SOURCE: I am trying to hook up my wii to my LED TV. It
You don't need component cables. Just use the regular AV connector that comes with the Wii and put the video (yellow) in the video spot that is also labeled "VIDEO" and "Y" on the tv...but the red and white (left and right audio) need to go into the farthest red and white connections...DO NOT put them into the ones labeled "Component Pr and Pb." It works perfectly...I just had to figure this out myself.
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