Akai PT5492S 54" Rear Projection Television Logo

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Question about Akai PT5492S 54" Rear Projection Television

2 Answers

Colors red and green overlap

I turn tv on and the figures are all edged with green and red

Posted by edweard schumm on

  • Anonymous Dec 27, 2007

    changed I.C's got bow out but can't align green and blue there is no magic focus button on front of set when I enter service mode can't tell what to change with settings.

  • drdon18 Dec 27, 2008

    red and green are overlaping

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2 Answers

Anonymous

Covergence is off... Check convergence and see which color will not move in the convergence settings... That is the STK that needs to be changed out...

Posted on Jun 06, 2007

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  • 6 Answers

You need a service manual for this set to know which settings are what in the service menu.

Posted on Mar 11, 2008

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0helpful
1answer

What is convergence IC problem

Convergence has to do with how different colors are displayed on a screen or monitor - typically the rear projection and some other types. When colors are overlapping to create unexpected combinations, or leave gaps between areas where overlapping is expected that results in a shifted red, green or blue image strip or edge - that is an indication of a convergence issue. They can look like this in severe cases:

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Colors will drift, so manufacturers often include a utility to help you nudge the colors back in the right place. Most times this utility is buried in the Set Up Menu and when activated, produces a screen like this:

6c0170ed-2cd6-4dfa-bbcb-a10a7d20f92f.jpg


You will need to adjust the red, green and blue colors for each cross so that only a white cross is displayed. Keep red, green and blue fringing to a minimum. When you're done, the screen should look black and white, symmetrical and straight - like this:

40e4c7a6-f241-4888-a151-d21b0792cb71.gif

Problems arise when you are no longer able to coax the utility to give you these crisp, B&W results with no red, blue or green ghosting. This is often due to a failing convergence integrated circuit ("Convergence IC"). Many times, replacing it will solve the problem, but other times it can be the result of failing components either ahead or after this IC. If you're attempting to replace this IC, please make sure the TV or monitor has been *unplugged* for 24 hours or more to allow the dangerously high voltages to dissipate.
0helpful
1answer

How to fix overlap color green and red on the lcd tv screen?

Mostly it is due to the cable TV operators defect.
Or reduce the Sharpness by going to Settings.,in the LCD tv.
Or try reducing the COLOR.
0helpful
1answer
0helpful
1answer

I have a toshiba tp50h50 rear projection tv and their is a blue shadow behind the words and makes the words a little blurry

Sounds like you need to do a color convergence. If you still have the owner's manual, it will give great detail on how to do this. The convergence menu is accessed from the video menu on the tv.
The tv has three color picture tubes, red, blue and green. The convergence alignment adjust each tube so that color from each tube overlaps each over to create a white image on the screen. Most tv's only allow you to adjust the blue and red colors.
Convergence should be performed each time the tv is moved and at least once annually.
2helpful
1answer

Picture

This tv have convergence problems,it dead.Red,green,blue misaligns colors,have colors shadows,3d colors pic like.All these problems are the convergence board have 2 STK convergence ICS some or all it resistors are dead.These parts must change to solved convergence problems.The shop will cost u $300-350 for parts and labors.
1helpful
1answer

My 51 inch Magnavox rear projection has red and green overlapping

the coolant is bad inside the blue and green pix tubes-to verrify this you can remove the front edge of the screen(it pulls off-one edge at a time-take out screws to remove screen-after screen is off look down at blue/green tubes pix is bad or not there
1helpful
1answer

Green band

http://www.mitsubishi-tv.com/support.html
click warranties...
Important Warranty Announcement for LCD TV Owners
0helpful
2answers

Colors arched and overlapping

if the option for convergence is still listed under the setting section of the on screen menu, then you need a convergence power supply board. If the convergence option is missing from the menu you need the ITC222 convergence missing repair kit. You can get either one at the following link they include instructions for the repair.
http://www.tvrepairworld.com/
4helpful
2answers

Blue and red overlap shadowing

convergence ic's are your culprit. they are responsible for aligning the 3 colors your tv projects onto your screen..
0helpful
1answer

Red and Green picture with ghost images

sounds like the high voltage transformer arc or one of the picture tubes arc causing the convergance ic to go bad
you can try to replace the IC heres a site to help:
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm

but you still may have a arcing problem.
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