Question about Hitachi Gst Hitachi CPX2020 Projector

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Purple projection Projection is purple hue when projecting computer image.

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Sounds like you may have a bad cable. I see this a lot where I work.

Posted on Apr 02, 2014

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1 Answer

Remove purple haze around edges


The set needs to be focussed and reconverged. The red and blue images combined make a magenta/purple image. Adding green makes it white. Depending on the type of TV, if it's a CRT projection TV then there's an electronic focus control for each of the three tubes as well as the mechanical adjustment of the optical lenses. Given the description, then I'd have a look at the electronic focus first. A sudden shift in focus suggests that something in that circuit has given out. This would cause the red and blue images to go soft enough to create a halo around objects on screen.

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1 Answer

When plugged into laptop, projects images with a purple haze


This will depend on the brand, model, cable connection type and OS of the laptop. Most have a color control which you can adjust.

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1 Answer

I have a panasonic PT-47wxc43 projection tv. I have green and purple halos coming up from the bottom. The screen has purple and green double images which are worse from the bottom up.


Hi,
This problem is due to convergence output ICs failure and both chips will be replaced to fix the issue.
There are two big black ICs installed with aluminum heat sink on deflection board, these are convergence output ICs and will be replaced to correct the problem, it is common problem of rear projection tv.
Below image of deflection shows ICs (marked in red) that are need to be replaced.
IC number is STK392-110 and available with Part Store for $32 each.
Click above link to see an image of IC.
If you are handy with electronics stuff repair and can replace parts in tv circuit board then can replace these parts yourself or ask local tech to help you.
Hope these info will help you.
Let me know if you have additional question.
Thanks.


May 25, 2010 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

Purple and Green haze on television image


Do you have any speakers near the TV, that aren't shielded... ?That's kinda what it sounds like to me.

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1 Answer

My toshiba tn61x81 projection tv


have you tried the convergence option in the menu? i believe it is under "picture". this allows for nine different sections of the screen to be adjusted when projection images get out of whack.

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1 Answer

Convergence


covergence amp ic"S need to be replaced.

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2 Answers

Picture problems


My computer did this and I think my TVs just gone the same way. Was definitely a loose connection somewhere. In the computer monitor it was because the pins in the plug were slightly bent and if I moved the wire the picture got better. In the end I had to replace the connecting cable

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