Question about Akai PT4799HD Rear Projection Television

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Alignment of picture is off balance

It appears the alignment is not working. When viewing widescreen formatted programs/movies the picture sets at an angle with wider black area at bottom right and upper left. When bulletins show across screen while watching programs you can read the portions in the lower right corner but then runs downhill (so to speak) as it moves to the left. Have tried to find someone in our area to come look at it but have not had any luck. Is there a way we can adjust this ourselves. We have had this TV less than 3 years.

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  • Akai Master
  • 5,138 Answers

Yes but you will have to replace STKs both of them also check pico fuses and resistors. STK394-250s i think is what this set uses Go by STK numbers that are in your set.You can get Parts at Electronix 1-800-223-3205.

Posted on Dec 22, 2008

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My screen has little dots appearing sometimes red sometimes blues behind the picture i just replaced the lamp bulb as i thought it would cure the problem


the projection tube needs to be adjust for color alignment, each tube (red, green, blue) must be aligned so you there would be no color smear appear on screen. if it is aligned try to set up the color balance, hue etc.

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Magnavox child lock help


hello The parental control menu enables
you to limit access to programs that
may contain objectionable material
or are not suitable for viewing by
children. The default access code is
0711
may contain objectionable material
or are not suitable for viewing by
children. The default access code is
0711.
The following table provides details
about the menu items:
Component Function Range / Options
Lock Enable
Enables the parental control lock. When
enabled, channels with objectionable viewing
content are blocked and can only be
accessed with a password. You can block
channels according to the movie or TV ratings
of the channel’s programs.
Off, On
Movie Rating Helps you block programs based on their
movie ratings. See “Movie Rating” on
page 25 for more details.

TV Rating Helps you block programs based on their TV
ratings. See “TV Rating” on page 26.

Change Code Changes the password for the parental control
lock.
Press the number keys to
change the password.
Reset Resets all channels and programs to their
default factory settings.


regards
shaun
Parental Control Menu
Lock Enable
Change Code
Reset
Back
Main Menu
Picture
Sound
Size
PIP/PBP
Parental Control
Channel Setup
Setup
Exit
Press Right to Enter
Press Right to Enter
Press Right to Enter
Press New Code
Off On
TV Rating
Movie

Mar 13, 2010 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

1 Answer

It shows picture not in full screen like the movies black screen at top,in middle is the picture,black screen at bottom


If this happen on DVD's it is because the DVD is formated to Widescreen, 16x9 size, your TV is 4x3 size. Unless the Menu has an option of Picture size, or Format, to set to Full screen. there is nothing you can do other than be sure to check the DVD for picture format size before purchasing.

Sep 28, 2009 | Hitachi 43F300 43" Rear Projection...

1 Answer

Automatic widescreen mode


If memory serves, no. If I'm wrong, the would be a setting in the menu or the remote to change it from 4:3 to Set by Station or Automatic. Might say Format.

Nov 07, 2008 | Hitachi 61SDX01B 61" Rear Projection...

1 Answer

1- I have a Panasonic TV (PT-53TW54)that has a "digital scan rate of 1080i,540P". I'm not sure if that means it has a digital tuner. Do I need a digital converter for this unit? 2- I'm using a...


1. Do I need any additional equipment to watch HDTV broadcasts on my HDTV-compatible TV?
In order to view over-the-air (OTA) HDTV broadcasts, you need to be within the reception area of a TV station broadcasting HDTV signals. Some TVs may require a set-top HDTV tuner and an external antenna to receive the broadcasts. Your cable or satellite provider may also offer HDTV channels as a part of their service, eliminating the need for a separate tuner. Please contact your local service provider to find out what kind of HDTV services they may offer.

2. What is CableCARD and how does it work?
HDTVs with CableCARD slots can accept a small card from your cable provider that allows you to receive standard definition and high definition digital broadcasts without a bulky set-top cable box. Please call your cable company to find out if they offer this service in your area.

btn_top_gold.gif spacer.gif line_gold.gif spacer.gif spacer.gif3. What is HDMI? Is it compatible with DVI?
HDMI, which stands for "High-Definition Multimedia Interface", is the consumer electronic industry's first connection capable of transmitting uncompressed digital audio/video signals. Components featuring HDMI can transmit both digital audio and video over one convenient cable, replacing the tangled mess that resides behind many home theater components. HDMI also offers improved quality over traditional analog connections thanks to all-digital transmission. Digital sources like DVDs and HDTV programming can now be transferred digitally from source to display without analog conversions that can degrade the original signal.

Unlike the HDMI interface, DVI only handles digital video. Through the use of an adapter, a DVI device can be connected to an HDMI device, but only video content can be transmitted. The audio signal would have to be transmitted through other methods such as analog RCA outputs or an optical digital output.

4. What's the difference between 720p and 1080i HDTV broadcasts? Does my CRT projection HDTV support both?
HDTV signals can be broadcast in either 720p and 1080i. It's up to the broadcaster which signal format to use, and both have their benefits. Our CRT projection HDTVs display 1080i signals in their native format. For 720p broadcasts, you can use the settings on your HDTV set-top tuner, cable box, or satellite tuner to convert a 720p signal into a 1080i signal that your TV can display.

btn_top_gold.gif spacer.gif line_gold.gif spacer.gif spacer.gif5. Why do I still see black bars on my widescreen TV when viewing certain widescreen DVDs and HDTV broadcasts?
Your widescreen TV has an aspect ratio of 16:9 (1.78:1), which is the aspect ratio of HDTV. However, movies are filmed at several different aspect ratios, including 2.35:1. Also referred to as "scope", 2.35:1 is a very panoramic aspect ratio that provides a wide field of view in the theater. Scope is much wider than your widescreen TV, so it still requires the use of letterboxing ("black bars") to fit the entire image on screen. Some TVs and DVD players have a zoom function that allows you to blow up the image so it fills the screen, but the sides of the image must be cropped in order to do so.

6. What will 4:3 broadcasts and DVDs look like on a widescreen TV?
There are multiple settings for adjusting the appearance of 4:3 material on Panasonic widescreen TVs. It can be viewed with black bars on the sides, preserving the way it was originally intended to be viewed. Some viewers find the black bars distracting, so they might prefer one of the stretch modes that lets you fill the entire TV screen with the image. One such mode is the JUST (justify) mode, which stretches only the outer portion of the picture while leaving the center untouched.

Oct 21, 2008 | Panasonic Projection Televisions

1 Answer

Child has altered widescreen picture to smaller picture. We cannot return to widescreen


Are u using a set top box? if so, you have to change the formatting on that box. If not you need to change it in the television. It should be on the remote. Let me Know. GURU jay

Feb 13, 2008 | Projection Televisions

1 Answer

Shady bar


no auto alignment i think it's the lamp engine. or grey scale aligment

Dec 22, 2007 | Samsung HCN4226W 42" Rear Projection...

1 Answer

DOWN HILL???


It only true is its like one color that is twisted. Remember there is 3 tubes in a projo. Red, Blue, Green. So if a yolk needs turning and the color is not badly out of wack then that makes it that all colors are out and it is hardly likely that all three are turned the very same way(misconscrewed) So this maybe an internal matter. In service menu there maybe a way to align the convergence or crosshatch of all three colors or maybe a resistor that has changed in value. Either way you need someone familiar with the set to work on it.

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1 Answer

43H70 picture wobbling


possibly leaky cap in power supply,look for a 1000mfd/16v cap in on near the b+ supply and also cold solder connections.

Aug 06, 2007 | Toshiba 43H70 43" Rear Projection...

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