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If you are using the component input the red plug could be loose at back of TV or Cable box or bad red plug/wire, try another input to see if color is ok on a video game or dvd player, if it is ok on another input it's probably not the TV but your source or wires
The series of the cable should go green red blue into the back. if you put the green in the red and the red into the green it give the TV a red base to go off of for the picture so everything is red. The reason the green cable won't is because it transmits a black and white picture which allows it a nice base to add the green and red to.
First check the wire cable your using, HDMI, AV, Component.....be sure the wire cable is in good condition. Check your input/output ports, see if the tv does the same on different hook-up. For example if your getting this crazy image on HDMI, see if it happens also on Component. If so first be sure the input device such as your dvd player , cable box etc, are not defective. If your wire cables are good, and your dvd, cable box are all working properly and the tv still has this problem then its an internal problem with in the tv.
This could happen because of a component defect in the tv's interface circuit, XL/XR scan circuits, or faulty sustain circuit (primary board).
First, is the DVD player output (Video out, audio out) connected to the TV input?
Have you used the Yellow cable from DVD video out to the TV video in? Mixing the audio and video cables will result in no signal.
Have you selected the proper input with your TV remote control. Most plasmas accept a variety of input signals; you must select the right one.
I deal with a number of these issues. Usually the connections are made improperly or the correct input source is not selected with the TV remote.
Put a DVD in the player and press play. Be sure you have made the proper connection from DVD player video/audio out into an auxiliary or video input on the TV. These could be labeled Line 1 or Line 2. With the DVD playing, run through the input options on your remote control. The button might be marked source, video or input. The screen should display your choices i.e. video 1, video 2, etc. When you see your DVD program, you've got the right combination.
Have the exact same problem, opened a case file with Hitachi.
I have a feeling it's a firmware problem -- hopefully they will make my life easy and mail me the proper cable I can connect from PC to TV, and the software to run such an upgrade (as opposed to packing this big thing up and carting it off to a service center).
Seems that Hitachi DESIGNED the sound to cut off from the Audio Out jacks if you use component video or HDMI inputs. Has to do with copyright laws of the HD Video -- which makes it asinine that they disabled the audio as well, as it's not part of the copyright issue. Seems to me they were just lazy to disable the ENTIRE set of output jacks.
I am hoping to find some sort of hack for this (either firmware or severing/splicing a control wire). However, I can't find much information on this yet.