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By poor color quality, do you mean that if you turn the color control all the way down, the black and white picture is more like black and red, green or blue - or do you have a good black and white image? If the B&W image is good, and the TV is an old (8+ years) one, maybe the mirror inside the set needs a good cleaning - especially if there are smokers in the room. If you have a B&W picture that is tinted, then you may have to go into a service menu to adjust it back to a better picture. Hard to guess the problem without more specific description of symptoms.
If this is a Toshiba 61A61 rear projection. First you have to determine if it has high voltage. You can find this out by looking at the end of each picture tube where the socket is to see if there is an orange glow indicating that the filaments are lit and the set has high voltage. If they are not lit then I know from experience with this set that there is a bad connection on the deflection board where the high voltage transformer is located. The HV transformer has red wires coming out of it. You will have to turn the deflection board upside down and look for the bad connection. But first just tap lightly on the deflection board with the handle of a screwdriver to confirm the bad connection. If the set comes on you will be required to solder the connection with a soldering iron and rosin core solder. Now if the orange glow is there you have bad capacitors on the hyper module. The hyper module is located to the right looking from the back and stands upright and is soldered to the main board. It will be required to unsolder and inspect the capacitors for bulging at the top. The hyper module is likely to not be available anymore. Changing the capacitors will fix the video problem
Picture Mode: Expert1
Fresh Contrast: Off
Noise Reduction: Medium
Black Level: Low
Real Cinema: On
Color Standard: HD (N/A w/HDMI)
White Balance: Warm
**Method: 10-Point IRE
Color Management System
Red Color: 0
Red Tint: 0
Green Color: 0
Green Tint: -15
Blue Color: 0
Blue Tint: 11
Yellow Color: 15
Yellow Tint: 2
Cyan Color: -15
Cyan Tint: 0
Magenta Color: 0
Magenta Tint: -1
lg70 nice tv excellent processor just to bad there is no intensity control on color management oh well still better than what the three s are pushing block out the hype lg will be number 1 in a few years haters are starting to come around and well leds coming,
p.s. i dont work for lg just tired of losers bashing stuff because they dont own it. im isf certified those settings are right on the money straighter than a ruler
you need to replace both the convergence ICs they are STK392-110 you can get new replacement ICs at the following link and they will provide free instalation instructions with pictures so you can do the repair yourself. Heres the link. http://servicemanuals.vstore.ca/
Is the green color on displays as well. (Displays means the video generated by changing the volume or activating menu-and seeing if this is green as well. Secondly, turn the color all the way down to zero. Do you see a "normal" black and white picture? If you do, then the picture tubes are not the problem and you have a failure in the color processing area. Let me know....
I have a Toshiba HD LCD tV, model 37AV50U. the screen is black. I still get audio and can change the channels but the screen stays black. It doesn't even show the menu box. Is this something I can fix myself?
if ur in service mode already..turn down all drive.green first turn it up until the desired intensity is achieve.then blue all the way until it almost blend the green.u must not see one color either too much green or blue.turn up red now,let it blend until u see a perfect black and white.note:make sure that the color level is set to minimum and tint to center.
ihope i help u..
Sounds like your red picture tube is not emitting enough brightness to balance the colors. A temporary solution could be to slightly increase the screen voltage of the red CRT to give a good black and white picture when the color control is turned all the way down. If the set has not been serviced in the last 5 years or so, and you're not ready for a new HDTV set, it may be worthwhile to get a technican to look at it and clean the dust off the lenses and mirror and evaluate whether a picture tube rejuvination might work along with the gray scale tracking adjustments.