I have an issue where only my 480i signals look horrible. There is virtually no color, looks almost black and white and there are light bands running vertically all across the screen. My 1080i signals look great! The TV is about 5 years old and I never had it re-calibrated, so I am wondering if that's all it needs? I had the blinking green light of death about 6 months ago and I repaired that by replacing the Caps, but I don't think this is related? Any ideas???
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Re: Mitsubishi WS55513 480i Signal no Color
That may be a TV problem but can also be a Cable box problem.Do you have any other 480i signals hooked to the TV?
Also most Comcast HD boxes can be set to output SD signals at 480p which may solve the problem. Usually get to the setting by turning the cable box off and pressing menu on the box, not remote.
It should display a different menu on the tv screen, arrow down to 4X3 overide then arrow right and try 480p.
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The Color Signal on this Model Series travels across three boards before being sent to the CRTs. The 3DYC Board, Signal Board and the Terminal Board. Most likely, the 3DYC Board or the Signal Board is causing the problem. I have had intermittent solder connections on the 3DYC Board to cause no color problems. This Board plugs in and is located on the left front of the Signal Board as you look from the rear of the chassis. If you feel you are not up to the task to work on the set, call a Mitsubishi professional. To find one, call Mitsubishi at 1800-332-2119.
I hope this helps,
Good Day, LEE-M;
Try this :
White raster with no signal, washed out looking video with signal. Access the service menu, "menu 0357" use the audio button to select "video chroma" adjustments, use the video button to select item "40 - AGIW", use the adjust button to change the setting to 0, then press the enter button to store the change. Good Luck, big IRISH.
This is an indication that the blue gun is being driven too hard. Have you tried to adjust the blue color control? If not try this first and if the control can not adjust the color then you will have to find out if the control grid on the blue tube is working and has the proper voltages present. Which you will need the following equipment to do.
Along with these you will need a schematic to show you what the signals and voltages should be.
And I might also suggest having a pattern generator and using the color bar signal since more then likely that is the one being used in the schematic as the reference signal.
If the source to the PIP input is a color signal then the PIP display will be color. PIP sets have two video sources one goes to the main screen while the other goes to the PIP. it all depends on what the format of the signal is being sent to each input. This is quite normal.
You could have either some bad solder connections or capacitors going bad in the chroma or voltage regulator circuits. As long as the picture is great when it's working, it should be worthwhile repairing.