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Re: No Color Blue
The symptom is not an indication of a convergence problem,straight forward the blue is missing,the pictute tube is not firing up or the color driver are not active and the blue color is not being processed,check the blue picture tube to see if is on sometimes you can see all three gunds from the side of the set.You should seek assistance from a professional to diagnose the problem.
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Sounds like you need to do a color convergence. If you still have the owner's manual, it will give great detail on how to do this. The convergence menu is accessed from the video menu on the tv.
The tv has three color picture tubes, red, blue and green. The convergence alignment adjust each tube so that color from each tube overlaps each over to create a white image on the screen. Most tv's only allow you to adjust the blue and red colors.
Convergence should be performed each time the tv is moved and at least once annually.
manual convergence should fix the problem if it does not the set most likely either has a bulb burnt out or a bulbs power / focus needs to be adjusted by taking off the panel and finding a 6 screw control panel
should look like that 3 screws in a row on top of another three screws each of thees control the power and focus of each color this is a somewhat delicate process and is a huge pain on larger tvs that you cannot completely see the picture or color while you are directly under in front of it so I had my gf come in the room and sit across to let me know which color was doing what if you dont have someone you will need to check after each adjustment
now the diagnostic as i said each screw controls a colors power and focus the focus is used if you see an outline of a color around pictures if everyone looks like a dead jedi with a blue aura around them the blue focus needs to be adjusted and so on for each color if you skies or blue screens seem feint your blue power probably needs to be turned up and so on for each color
if through the course of this you can see the bulbs and notice one is out your probably looking at dealing with the color issue until the time you can purchase a new tv as the cost of the bulb and the technician needed to install it as they are wired to a circuit board and requires technical knowledge and tools
First of all, make sure that you have the colors of the component cable matched correctly. You can switch the Pr and Pb cable and still get a picture although in the wrong color.
Secondly, go to the TV menu... the menu should still be in color. If it is in B/W then you might have a hardware issue. Try adjusting the custom color setting so that you get a blue picture or red picture. There is an option for adjusting the color called "blue mute" it should give you a perfectly blue picture. If you still don't get any color than it is a hardware issue. It could be the Main Board or the Control Board.