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We cleaned the inside of our tv and now we have a green screen

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Please tell me how you actually cleaned it? Seems you may have hit something that turned the Green CRT gain up higher than the blue and red CRT?

Posted on Dec 08, 2014

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My toshiba tv cz36t31 screen is green and it turns off by itself


Your TV has 3 possible cause for problem described above.First could be RGB output (ussualy there is chip soldered on CRT pcb that amplifying each signal Red Green Blue to your picture tube) that is part of circuits inside the TV ,and second case could be picture tube by itself.Picture tube have heat filament inside that heats catodes and after years carbon is acumulated(from heating) on one of the catodes (in your case green) causing green signal shorting to the ground,screen goes green and TV shuts off (protect mode) because its pulling to much current.
Third but not common problem possibly be a Bad Flyback...I suppose there is some way the flyback could do it but I would do a lot more before reaching that conclusion...

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1 Answer

The color seems to be off. No red, and lots of purple. This is a Toshiba 57H81 wide screen big box tv. It was purchased in 2002.


Could be a bad board within the tv but it is sometimes the source input meaning it could be dvd player, cable/satellite box, etc causing the loss of color but it is unlikely. I have one of these tvs and they use red green and blue projectors to reproduce the colors so when the red projector fails then you get purple which is green and blue colors combined without the red. I have found it to be sometimes a bad connection inside the tv and I found insects such as roaches inside others. Using extreme caution when opening the rear cover of any tv due to dangerous and fatal high voltage. You might find that simply cleaning out the inside of tv and reseating all the connectors might resolve your issue otherwise you would have haul this tv to a repair shop where you pay half the price of a new flat screen lcd for just repairing this tv which will probaly have another color go out next month.

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1 Answer

The tv is showing red lines on the screen.


These are retrace lines. The screen on the red tube is turned up too high. Inside the set there are 6 knobs. 3 for focus & 3 for screen. Turn down the red screen until lines are gone. These knobs are usually found by pulling of the front panel.

Apr 06, 2009 | Televison & Video

1 Answer

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sorry but it's the bulb.....hince why there is a class action lawsuit against them......

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1 Answer

Green dot on inside of screen


its a dead pixel. its not fixable, and deos not even qualify as a defect as its just one.

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1 Answer

Screen Goes Green TV goes to stand by blinking 8 times


try adjusting your color tuners located inside tv behind speakers.

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Tv cuts off and green light flashes


Yup, it seems a lamp problem can give a blinking green light over the 10 times (1 - 10 times for diagnostic codes), but in my case rather than replace the bulb if it works for a minute then resets with the green light blinking, do what I did.
Take the lamp out and inspect it, it has breather screens top and bottom, if it cant breath because there clogged with dust, clean them, and you can remove the screens, use q-tips and clean the inside. I saved the cost of a lamp and it's working fine!

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Dark picture


do you get all three colors? red, blue and green?

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