Question about Akai PT5492S 54" Rear Projection Television

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Sound works no picture

Tv was on and the kids were watching a video. they said the screen turned different colors. and then just outer blacknes

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Re: sound works no picture

Mostly likely,convergence IC's will need changing and a

soldered in pico fuse located and replaced.

Posted on Oct 15, 2007

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The picture is not clear anymore. It seems as though the picture has gotten gradually darker. We still use the television, it is just not clear enough. When watching nighttime scenes, we cannot see mu

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • 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.
  • TV shuts off after powering on. The power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


69189a5.pngSOLUTION #1

What you will need to do is convergence. You can get a repair kit from . It includes replacement parts,step by step instructions, support, etc.

Common 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.

TV set after fluid change



What you will need to do is replace the coolant and clean the crt. You can get a repair kit from . It includes replacement coolant,step by step instructions, support, etc.

Jan 21, 2013 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

My five year old Toshiba 57H84 rear projection TV has a pink tinted screen when you first turn it on, then after it warms up, the colors are all fine but then the picture has evenly spaced blue tinted...

Hi,Yes your problem sounds like the DMD board.This is how it works: Basically the light of the lamp goes through a tunnel that carries a color wheel(rotating disc with a gamma of colors that creates the colors on your tv)then the light of the lamp goes through the DMD board which is a chip composed of around 2 million pixels that creates the images and colors.When it starts to fail it will create black bars,pixelation,color distortion or white dots on screens. Here's a video that will help you find where the DMd chip is located : Have a blessed one!

Apr 30, 2010 | Toshiba 57H84 57" Rear Projection...

2 Answers

Foggy picture

These sets have several common problems which are listed below.

Problem #1) Convergence

Yours may have one or more of the following symptoms
  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted or warped
  • No Audio/Video - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....
  • Dull looking picture
  • White looking picture
  • Halos around objects
  • Red/Orange looking picture

You can see some more examples and find the fix here...


Apr 01, 2010 | Philips 60P8341 60" Rear Projection...

1 Answer

I have tried to two different convertor box on my

Check your ratings settings, it almost sounds like youhave some ratings filter set so that if anything comes on that you wouldnt want kids watching it blacks out the screen.

Sep 23, 2009 | Hitachi 60V500 60" Rear Projection...

2 Answers

Green picture

i dont think it the color wheel - to make it green the glass would of come off and the tv would be vibrating badly. to check pull the lamp out and with a flash light look at the color wheel -
you most likely got a surge that glitched the eeprom - you will need the service remote to adj the white balance

Aug 01, 2008 | LG 52SX4D 52" HDTV

1 Answer

I have a samsung sp42q2hl, which on the front of the tv say's it is a hdtv ready, and yet i cannot watch high defenition images or movies, also there is no hdmi inlet at the back so i'm not sure how you...

Use component to connect this will give yu HD picture,
On the back of the set you will see A group of 5 phono sockets Blue, Green, Red, These carry picture,

Then Red, White, these carry stereo sound.
Component video 0831d.gif
Component-video cable b.gif
Component video improves the picture quality even more by not only separating the color from the black-and-white portions of the picture but by further splitting the color information into two color-difference signals. When the picture signal is split up in this way, you get an unfiltered, uninterrupted image, with better resolution and greatly improved color saturation. And this is why component video is the predominant method of hookup from HDTV set-top decoders to HDTVs.

So this is how your set can produce HD picture from Hd source.

Jun 22, 2008 | Samsung Projection Televisions

2 Answers

Samsung 65 in Mod HCN653w Picture Distortion

Do you have this problem on all inputs to the TV (Tuner,Video, Component, S-Video, etc...)? or just one? And does it affect the TV menu when it's brought up on the screen or no?


Feb 10, 2008 | Samsung HCN653W 65" Rear Projection...

1 Answer

The words on the screen is doubled or trippled.

Go to the picture control menu and turn the color to minumum so that you are watching a black & white picture. Do this to determine if the color offset affects the overall screen or just the lower corner. If the center is off, go to the convergence adjustment menu and align the red and blue onto the green as described in the owners manual. Some models also allow you to align the outer edges as well. If the bottom is still bad you may have a problem in the convergence circuit. If the outlines are not seriously bowed or distorted a minor convergence toutchup by a qualified technician should correct the problem, otherwise parts are involved and the repair is considered major.

Nov 21, 2007 | Toshiba 53H71 53 in. Rear Projection...

1 Answer

Three seperate colors on Screen

Screen may have a hair line crack in it causing projection to be distorted. Inspect screen very closly with magnifying glass if necessary to insure no cracks. If crack is found replace screen.

May 18, 2007 | Zenith R40W46 40" Rear Projection...

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