Question about Insignia 42" Flat-Panel Plasma HDTV

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Picture suddendly changed to "photo

Picture suddendly changed to "photo negative" type image, where lots of bright green colors replace normal whites/yellows/browns, dark colors appear white. Its hard to explian. Any ideas? Is this a cheap fix? or better off buying a new TV.

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Hi! your lcd cpu is defective, here in the philippines we try to re heat the cpu and it works.

Posted on Sep 04, 2009

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This Problem is based on the Color Management so , The Perfect Solution for this problem is open the Photo or image etc in Adobe PhotoShop then goto Enhance->Adjust Color->Remove Color Cast , after removing the color cast , create a new layer for adjusting brightness , contrast & etc , then finally goto Image Size and change the DPI from 72 to 300 then save the image as JPEG or PNG etc , after saving the image close the Photoshop and open the image using Windows Photo Viewer and take the printout which will come as it is in the System

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Image quality using default factory settings is awful. Colors are over-blown, faces are washed-out, and highlights are cropped. People on the internet compained that there is no brightness control -- there is..but its hidden in a menu. Press the Setup button on the remote and move to the "System" settings. I've found these settings produce a fairly correct balance of color, detail, and brightness:

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Hello Landscapeman ,

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IM A TV TECH. I HAVE A SONY LCD KP-60XBR800 I HAVE NO RASTER. POWER OK, MENU OK BUT NO RASTER ON TUNER, TUNER VOLTS OK,CAN YOU HELP ME PLEASE. THANKS my email sergioaguirre0182@hotmail.com


check the high voltage with the screen control turned up high where there is no raster. suspect problem within the video circuit where there is no high voltage or defective picture tube.some time when the screen is black and the screen control advanced,you can see if the tv has video or vertical or horizontal problems on the screen.service the high voltage circuit if there is no raster or high voltage is seen.no raster can be caused by the no heater or filament in the CRT.---- a defective picture tube can cause many problems, such as, poor brightness ,missing colors,intermittent picture,poor focus,a single-colored raster,arching in the gun assembly,retrace lines in the picture,negative picture,chassis shutdown,noheater or filament lit and no raster to name a few.an open filament or heater can cause no picture or no raster symptom.a defective CRT can have an extremely bright screen.loose particles of the cathode element can lodge between the grids and cause an intermittent black and white picture. simply tap the ends of the CRT gun assembly and notice if the picture begins to flash off and on.---- with a leaky picture tube after turn on the raster dims and get extremely bright.a dim picture with no green in the raster can result from a bad green assembly. a heater-to-cathode short can cause a raster to change colour or a result in no raster at all.replace the picture tube if there is severe arching in the neck of CRT. excessive brightness with retrace lines and a vertical collapse to a thin line can be caused by a bad coil on the neck board of the picture tube.rejuvenate the picture tube when there is very bright green screen. check for the resistance change on the resistors of the CRT neck board for an excessively bright picture with retrace lines.excessive dust inside the CRT spark gaps within the picture tube socket can cause the very bright raster and the chassis shutdown.a defective video amp,luminance buffer,or reference transistor can cause a bright picture with retrace lines. -------- for getting any required parts to replace you can get it from www.radioshack.com or from www.partstore.com or from www.shopjimmy.com --------- thanks.please do rate the solution.thank you for using fixya.keep updated.

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Double picture and colors are neon green and pink


Your TV most likely has fone of two possible problems.

Problem #1 - Failure in the convergence circuits. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem


  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
Here are some photos of convergence problems.

3dc9420.jpg
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed. Notice how dull the colors are and how white the screen looks. The screen may also look red, orange, dull, etc.

9e7eb5b.jpg

TV set after fluid change. Notice how bright the colors are now. Everthing looks crisp and sharp again.

182c282.jpg



2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

May 20, 2009 | Zenith R57W46 57" Rear Projection...

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Excessively bright whites...has a haze around any white items. all other colors are fine.


Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look white,dull, red/orange, etc. You may even see white halos around images.

Here is a photo of a set that needs the fluid changed.

578ba6c.jpg

TV set after fluid change

65af323.jpg

2c07611.pngSolution


What you will need to do is replace the coolant and clean the crt lens. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos, step by step instructions, etc.

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To use the Color Correction Wizard, go to the printer's Color properties page, select User-defined color correction , then click Start Color Correction Wizard button. The Color Correction Wizard helps the user perform the following steps:
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