At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
The vertical and horizontal alignment of the video is not proportionate. Almost as if the four corners of the picture are being pulled out of the TV. What is the cause of this?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Vertical scan output section circuit fault. Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences of the author of that site.
Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505.
If you wish to get more details, check the site linked here.
Four
blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal
line then the video signal muted. Check IC1509, Q1505. Check the vertical output IC, especially to the solder terminals for any loose soldering points. Visit the site named 'Electro-help' for more
details. Click this link. View it in
"Timeslide" or "Flipcard" option, which can be selected
from the drop down box menu by the [Sidebar] tag, at the top left corner
of the display window. You can also
click the [Home] tab to see the latest updates. It will make search
easy. There are more than 1350 posts to different brand TVs now. Pull up older
posts there.
HI, Your tv has problem with its vertical scanning side. vertical scanning
output ic (integrated circuit ) may have some problem ( faulty or dry
soldering in its leads). You can easily find out the vertical ic on your tv.
there will be four wire coming from the coil which is fitted on the
picture tube neck, of which 2 will goto horizontal scanning section and
the remaining two will go to vertical scanning section. just follow the
two thin wire (normally in color green and yellow ). it will goto a
socket on the main board. follow the track on the board. it will lead u
to vertical scanning section. check for any dry soldering, if not ,
replace the ic. ok
Hello
There is total vertical swee failure occured on your TV. All CRT based telivisions have both vertical and horizontal sweep to display picture on the screen. In your TV, vertcal sweep has gone out; and horizontal sweep is there, that is why you see a bright horizontal line on the screen.
There are mainly two reasons for this fault. One is bad soldering at the legs of the vertical output Ic, and the other is Vertical Output Ic failure.
You just open your tv, and locate the vertical output Ic. It can be located by following the wires that goes from the deflection Yoke of the picture tube to main board. This will contain four wires, out of which two of them will be thick, usuall red and blue, and the other two will be thin relative to the above said pair, may be green and black, or green and yellow. You just follow the two thin wires, as they are carrying vertical sweep signal to the deflection yoke.
Normally these four wires are socket pin type arrangements, which has pluged into the printed circuit board, and can be detached by pulling its plug from the board. Just make the board upside down and carefully look for any loose contacted solder joints of any other to the solderings of this plug. If it is found ok, then follow the print to where it goes to. it will lead you to vertical output Ic said above. It will be screwed onto a metal plate, to radiate heat out of it when it works. Just look for any loose solderings there on the legs of the Ic. It is quite normal that these solderings will get loose with time, as these ponts are heated and cooled several times.
Resolder all these legs with applying a little more solder, without any short between these legs. Switch on the TV all connections have given. Normally this will retify your problem. If not, IC stated above is faulty. Resolder it out from the board and go for a same type and number. Replacing it will rectify your complaint. OK.
Found some relevant info on how to adjust your video settings... You might want to give it a try!
Thanks! =)
4.12 PC Input Picture Adjustment
The Picture Adjust menu operates in the same
way for the PC Input as for the DTV / TV input in
section 4.2 for Backlight, Contrast, Brightness and
Color Temperature. 4.12.1 Auto Adjust
When the MENU button is pressed, the On Screen
Display (OSD) appears on the PICTURE ADJUST
page. Press the button to highlight the Auto
Adjust selection.
Press the button for the LCD HDTV to adjust to
the PC signal timing automatically. 4.12.2 H-SIZE
Press the button to highlight the H-Size selection.
Press the button to start adjusting the horizontal size of the picture. Use the or button to adjust
the horizontal size. 4.12.3 Horizontal Shift
Press the button to highlight the Horizontal Shift selection.
Press the button to start adjusting the horizontal position of the picture. Use the or button to
adjust the horizontal position. 4.12.4 Vertical Shift
Press the button to highlight the Vertical Shift selection.
Press the button to start adjusting the vertical position of the picture. Use the or button to adjust
the vertical position. 4.12.5 Fine Tune
Press the button to highlight the Fine Tune selection.
Press the button to start tuning the to the PC signal. Use the or button to adjust the tuning
4.14.1 Understanding Viewing Features
Your LCD HDTV features four viewing modes and Picture-In-Picture (PIP)/Picture-by-Picture (POP) mode.
You can switch viewing modes using the remote control. 4.14.2 Viewing Modes Normal Mode
The original 4:3 aspect ratio (1.33:1 source) is preserved, so black bars are
added to the left and right of the display image. Standard TV broadcasts are
displayed with a 4:3 Aspect Ratio. Movies in 4:3 Aspect Ratio may be referred
to as pan-and-scan or full frame. These movies were originally filmed in 16:9
(widescreen), and then modified to fit a traditional TV screen (4:3). Wide Mode
When watching a standard broadcast or full-frame movie in this mode,
the display image is stretched proportionately to fill the TV screen.
When watching a widescreen (1.78:1 source) program or movie, the
display image fills the TV screen. If you are watching a widescreen
(1.85:1 or 2.35:1 source) program or movie, there will still be black
bars at the top and bottom. Zoom Mode
When watching a widescreen (1.78:1, 1.85:1, or 2.35:1 source)
program or movie, the display image is zoomed proportionally to fill the
width of the screen. The top and bottom are cut off to remove most of
the source material’s black bars. This mode is good for programs or
movies with sub-titles. Panoramic Mode
When watching a standard broadcast or full frame movie in this mode,
the 4:3 Aspect Ratio (1.33:1 source) display image is stretched
horizontally on the left and right sides to fill the TV screen. The center
of the image is not stretched.
Note: Viewing modes are saved based on input. For example, you lasted watched a DVD in widescreen mode and then watched TV in standard mode. When you switch back to DVD input, the viewing mode will return to widescreen.
Im a HP LCD and Plasma TV technician and I know on HP tv's if theres vertical or horizontal lines, this can indicate a bad video controller board.
What i would do first is perform an alignment to see if that fixes the vertical lines. Your TV should have a feature for it to automatcially perform an alignment of the mirrors.
if the alignment doesnt work, I would say your video controller board is bad.
×