I loved this TV until yesterday.
I turned it on, and first I noticed very slight changes in color (like the drift you get when you try to display a dvd signal on a vcr), then it went to different colors, mostly pink and violet. Now it's all monochrome red and that gets brighter and darker whenever it likes. I tried turning it off for a while, but there was no improvement, except that it shows a good color picture when it first comes on and quickly becomes red monochrome.
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Re: All red picture now.
If you said that for a moment its looks ok then, look at the circuit board closely for cracked solder joints. Resoldering any bad joints might just solve your problems, but remember there are very dangerous parts in a tv circuit get a tech to solve these, is not to espensive...good luck
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To achieve true life like colors, the primary colors need to be balanced to produce a perfect black and white picture. Turn the color level on the tv to 0 and tint to middle then look at the picture - does it have a reddish or other "coloration" to it? Then set the individual color levels (if your TV has these settings) of red, blue and green to balance out and get a true black and white picture. After that, bring the color level up slowly until the facial levels are natural - not over driven as seen in most store displays. You may need to use tint control slightly.....
One other way - There is a dvd from Disney called "Wow" that aids in getting your set to optimum display.
Examine the screen with set on and color set to zero--stand back and look= is screen pink to red color?
If so it may be a common issue on this Hitachi.
Usually it is an adjustment inside the set of the red screen control needing to be turned just slightly down---these are known for the red control "drifting" just slightly from time to time--answer is based on model number indicated here.
These procedures are from the owners manual, go into menu and then picture quality and then:
The Convergence feature lets you adjust the TV’s three tubes. When the TV tubes’
images are precisely aligned, they create the color images you see on the screen.
Over time, the picture can drift out of alignment (this is normal). If your picture
seems fuzzy or has a yellow tint, using Convergence could correct this
misalignment. Only one convergence is needed for all inputs, regardless of the
Note: Make sure the TV has been on for at least 30 minutes (TV needs to
warm up for best results) before starting Auto Converge or Red/Blue
When you select the Convergence feature, a submenu appears with three options:
Auto Converge Automatically aligns the projection lenses to self-correct
color images. You’ll see flashing squares of color dance across the screen
(this is normal).
Note: After performing auto convergence, use the Blue Centering and
Red Centering menus to fine tune convergence in the center of the
screen, if necessary.
Blue Centering Aligns the blue and green images to fine-tune the picture.
Red Centering Aligns the red and green images to fine-tune the picture.
Note: The ability to change channels is disabled when adjusting the
convergence options. The TV must be tuned to a usable signal to
converge the picture.
yes! those are the screen and focus adjustments. 3 for screen, 3 for focus. try this. go in menu....turn down color, brightness, contrast all they way down. you should then have no picture, but in your case a little red. then go to back of tv and turn those 3 screen adjustments all the way down. slowly turn the screens back up until you get barely a picture. because remember, your brightness and contrast is all the way down. the picture should be dim but seeable and with red, green, blue adjustments, make it a black and white picture. when balanced..... turn up color , brightness, contrast in menu. enjoy!
Your alignment is off. Go to the set up menu then convergence. hit right and you will be in the convergence menu. select the color that is not in alignment. The green line does not move. if blue and green are lined up the line will be cyan. if red and green are lined up the line will be yellow. when all three are lined up the color will be light. Best of luck!
Chances are, if it's an older set, componants have changed value through use over time, which also includes the picture tubes and associated driver circuits. The way to compensate for this color drift is through adjustments. Either turn the red down a little, or turn the blue and/or green UP. Be carefull though as there are potentially dangerous voltages in and around the circuit boards and picture tubes.
I would suspect you have several capacitors drifting out of tolerance as they warm up. When checking for these, also make sure to change The value Of C813 (33uf 16v) To (10uf 50v) if it hasn't been done already. You'll need a technican with a capacitor meter and ESR tester to find the marginal capacitors. I doubt that any of your STK packs (IC's) on your convergence module are defective. I'm also assuming that the tapping with the wooden stick didn't change anything, otherwise a bad solder connection could be the culprit.