To clarify we are the tech people who changed the tube. Normally we hook a sencore color generator to the monitor and use that to adjust the color. This monitor will not allow you to do this from what we can gather without some type of external box that plugs into a serial type connector inside the monitor. We have a similar setup that we use for some viewsonic monitors. Hitachi told us that this exists but would not provide any further info on it.
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Re: Color adjustment for CM 811U
Hi, if you are referring to the replacement of the picture tube, then yes, the color will have to be adjusted. However this should have been done by the tech personnel who did the replacment with a color bar generator and alignment tools.
You can also try pressing the degauss button on the monitor to see if the color balances back.
Hope this be of some help. Good luck
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test first a) Video detector, then 2) AGC, adjust control, circuit 3) color Sync 4) color occ 5) color killer 6) color i-f 7)DEM red-gree-blue+videoamp red-gree-blue finally YOKE.see the b.diagram attached. God bless you
To adjust color first of all set contrast and color controls to minimum,adjust the brightness to see clear picture than add contrast to get perfect black and white picture than add color to it for a good quality color picture.
On your remote control, press video, will give you options to adjust, press video until it gives choice of color adjustment, press video agiain for tint, pressing again gives you other picture choices.
As TVs age, the rate at which the CRTs begin to decline in terms of light output increases. If you go into the customer menu and adjust the color setting to zero. ( no color) observe the image. Is it good gray scale? Or, is the image still green tinted? If so, its definitely a problem with the CRTs( picture tubes) You may need to just re-adjust the screen settings for the CRTs or it may be more serious, a CRT may be bad. Replacing the CRT is a job for an expert and will cost $500-700.
What you may have needed to do was adjust the
green & blue crt screens to match the red.
Go into your picture menu adjust, turn color
all the way down to a black & white px. Now
adjust each crt screen so that you end up with
a true black & white px. Then adjust each
focus control to get a sharp px, have your
tv on a channel like the home shopping
network so you can adjust each crt focus
one at a time for clarity by cover the other
2 up. Then go back into picure adjust & turn color ahlf way up, you should see a better