Question about Akai PT4298HD Rear Projection Television

1 Answer

Colour My TV. is predominately blue,green and yellow. No reds! I can't adjust the colours to bring up red.Can you assist me?

Posted by on

  • Paula Smith Dec 03, 2007

    My picture seems to be warped and my color is like a prism effect.....happened with no warning. The set is 3 years old..any ideas?

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,030 Answers

It sound like you haveing troble with your red crt...could be crt socket circuit board or actually crt.

Posted on Dec 07, 2007

  • Willie Howell Dec 17, 2007

    C R T Stands for cathode ray tube. otherwise know as picture tube. a projection tv has 3 of them

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why are green horizontal lines are appearing, too much yellow colour and green light blinking red?


These horizontal lines are vertical flyback lines and would indicate
one or more of the tubes cathode drive circuits are defective.
As the picture is predominantly yellow this would indicate excessive drive to red and green guns. Check the red and green video output stages especialy any clamping diodes.regards from Vintie

Sep 19, 2013 | Sony FD Trinitron WEGA KV-21CL10 21" TV

Tip

SONY TRINITRON ONE COLOUR PREDOMINANT SCREEN


Sony Trinitron sets are of CRT [Caothde Ray Tube] types. The common fault seen in these type of TVs are any one colour predominant on screen wih sound OK. Either red, blue or green colour with some thin horizontal lines at about an inch apart will be seen on the entire screen. This is totally a display card problem, which can be seen pluged onto the picutre tube neck. There are three electron guns for every picture tube, which emits red, blue, and green beams, which in turn illuminates the phosphor on the screen to get that colour. If no emission from all guns, results in a blank screen, ie black screen without any disply at all. The three colour beams together produces proper coloured picture what we see on screen. These three gun's terminals are brought out by pins of the picture tube outside to which video signals are given in appropriate proportion to produce a TV picture. Normally, all these three pins are biased with a voltage of about 170 to160VDC+ve. Take one colour gun, as an example and and let me describe the problem.
Let it be a green gun. These guns are called cathodes of the picture tube. If it gets a voltage with respect to its grid, it will emit electrons according to the voltage applied to it. This is a negative process, that is, as the voltage at this pin drops, its emisson incresses and vice versa. If the emission increase, the colour with respect to that gun also will increase and gets predominant at the screen. So when we see a green predominant screen, there will be less voltage at the green cathode with resepect to the other two. If red colour is predominant, the voltage at red cathode will be less than the other two. If blue colour is predominat, the voltage at the blue cathode will be less than the other two.
We must find out the reason for this fault first. Assume that your Tv has a red predominant screen with some thin lines across it, at about one inch apart of the entire screen, it is clear that the the red cathode voltage is very lower than the other two. the main reason for this fault, normally seen in most of the Sony Trinitron, are loose soldering points either to the picture tube base socket or the resistor connected between the red drive transistor's collector point. Resoldering the most of these points on the base card by applying a little more solder will rectify this probelm. Other possibility is shorted video output transistor of that cathode. A direct short [collector to emitter] of these transistors will drop volatge to very low at that respective cathode of the picture tube, and that colour will be pridominant along with lines. Replacing the transistor will solve the problem. In some cases, the resistor connected to that transistor may have blown out. If so, it should alo be replaced. Whatever the case may be, voltage at the respective cathode that emits colour will be very low with respect to the other two. Find out the reason and rectify it. You can compare the voltages of the other two cathodes with respect to the faulty colur cathode. Cathode pins will be marked on the base card, and can be identified. It is best to pull out the base card from the picture tube neck and place it somewhere a safe place without shorting it with other parts of the TV. You can measure the voltages of these points very easly, without fearing the damge to the picture tube. After all are found Ok, replug the base card and switch on the TV. The set will be alright. In rare cases, chroma IC also can be a reason for this fault. if it is faulty, after a short period after switch on the TV, the IC will overheat and shutdown the entire system.

on Mar 21, 2011 | Televison & Video

1 Answer

Hi, im searching for the stereo wiring chart for my mitsubishi lancer 2002 GLXI. i have searched for it but the colours are completely different to what i have. For example the colours i have are - Blue/...


This is all I could find. Hope it helps.


WIRE COLOR POLARITY LOCATION
Battery RED/BLACK (+) RADIO HARNESS
Accesory BLUE (+) RADIO HARNESS
Ground BLACK (-) RADIO HARNESS
Illumination GREEN/WHITE (+) RADIO HARNESS
Power Antenna YELLOW (+) RADIO HARNESS
LF Speaker (+) WHITE/BLUE
LF Speaker (-) BLACK/BLUE
RF Speaker (+) WHITE/RED
RF Speaker (-) BLACK/RED
LR Speaker (+) YELLOW/BLUE
LR Speaker (-) GRAY/BLUE
RR Speaker (+) YELLOW/RED
RR Speaker (-) GRAY/RED

Apr 14, 2011 | 2002 Mitsubishi Lancer

1 Answer

ShubhangiWe try to connect CD player with Samsung LCD TV. CD Player is having Three Component Yellow, Red,White. It dont have Blue and green components.What to do ???


Hi, Component input connectors use the colour convention
Green = Y (luminance signal)
Red = Pr or Cr (Red colour difference signal)
Blue = Pb or Cb (Blue colour diffrence signal)

Composite input connectors use the colour convention
Yellow = CVBS (composite video, blanking, sync)
Red = Audio Right
White = Audio Left

for compatibility both units will need to have matching colours. note the component inputs do not have audio and as such will also have a set of red & white connectors for use with the audio signals too ( rule of thumb Component = 5 connectors, composite=3 connectors)

Sep 23, 2010 | Samsung Televison & Video

1 Answer

The people are blue and we have no option for changing the colour


the component video cables are switched around. there are 3 colors for video - green, blue and red
two for sound - white and red

make sure you didn't swap the red cables, or swap the blue and red, this is most likely the cause of your issue, check on both the sat box and on the tv

let me know if you require further assistance

Jul 11, 2010 | LG 42LC2D 42 in. LCD HDTV

1 Answer

When using component cables(red, green, blue )


The series of the cable should go green red blue into the back. if you put the green in the red and the red into the green it give the TV a red base to go off of for the picture so everything is red. The reason the green cable won't is because it transmits a black and white picture which allows it a nice base to add the green and red to.

Feb 24, 2010 | Samsung HP-R5072 50 in. Plasma HDTV

1 Answer

How to connect to TV


The Yellow/Red/White connectors are Composite+Audio
Yellow carries a composite signal and Red and White Carry left and right audio channels.

Red Green Blue Connectors are Component
Each coloured connector carries one 'component' of the picture

So yes, your extra set of red white yellow cables would be fine to use, just make sure you connect the same colors at each end red-red green-green blue-blue

However..... the red green blue only carry the video, you will still need to carry the Audio, this is usually done either by the red and white (L & R stereo) or your DVD may also have an optical or coaxial output to carry the sound. if there is no equivalent connector on the TV then you may be stuck swapping the red/white cables, usually though there would be 2 sets of red/white connectors one set to go with the yellow, one set to go with RGB.

Apr 22, 2009 | Televison & Video

1 Answer

Colours on TV Panasonic TX-32PL10 5/6 years old


Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
Or send to ptscorp.com

Feb 11, 2008 | Televison & Video

2 Answers

Pic Bleeding


this sympton is characterized by the presence of red, cyan, green, magenta, blue or yellow colour in a supposedly plain white raster. proper colour reproduction cannot be expected if the raster is coloured. this symptom is caused by a poor white balance adjustment of by a trouble in the CRT, colour amplifier, color demodulation or colour output circuits. if the raster has a tint of red or cyan, check the R-Y output circuits and the first grid, second grid and cathode circuits of the red electron gun. but if you dont know anything about this, just bring it to a qualified service technician. good luck!

Jan 21, 2007 | Sony KV-35S45 35" TV

Not finding what you are looking for?
Akai PT4298HD Rear Projection Television Logo

Related Topics:

52 people viewed this question

Ask a Question

Usually answered in minutes!

Top Akai Televison & Video Experts

Jaime Hernandez

Level 3 Expert

2336 Answers

The Knight
The Knight

Level 3 Expert

75846 Answers

Marvin
Marvin

Level 3 Expert

82322 Answers

Are you an Akai Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...