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Re: Poor picture quality
You need to consider the following tips herein as follow:
1) Field collapse (horizontal white line on screen) R710 dry joints. Same as C2146TN & C2546TN problem solved with thanks to Mike G & Barty. Power off/unplug. Get to circuit board underside with aerial socket up-R710 is near top and right of centre-cluster of 4 joints best resoldered
2) Picture is horizontally narrowed and deformed Capacitor C2913 (390nF, 250V) on the deflector PCB had lost capacity
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Extremely blue color temperature that
cannot be adjusted; some false-contouring artifacts in dark scenes; no
picture-in-picture; limited connectivity with just one DVI and no HDMI
inputs. If use as a TV monitor: The number of colors you can display is controlled by the video card
installed in your computer. In order to display more than 16 colors,
the proper video card driver must be installed. Contact your computer
or video card manufacturer to obtain the latest driver from them. If you are watching standard-definition or Cable/RF signal on an HDTV,
the picture may appear to be of poor quality. This is because the TV is
designed for viewing HD or at least digital content. Your best bet would
be to upgrade to a Dish Network HD receiver and connect it to the TV
with an HDMI cable. Similarly inputting analog signal to TV from your
DVD player will not appear to be of great quality. A newer DVD player
would most likely have component video output which would look much
better. To get even greater quality, an upconverting DVD player
connected with an HDMI cable would look the best. You could also upgrade
to a Blu-ray disc player, which is capable of playing HD Blu-ray discs
as well as DVD's at higher resolution. A less expensive choice could
also be a streaming media box.
Hierarchy of inputs for good picture quality:
hi, Is there is white horizontal thine line on all over the screen then the screen voltage of you TV is high. Can be caused by bad base socket in the picture tube neck, faulty focus/screen block. Check the two things. You can see the base socket at the picture tube neck replace all the three base sockets for the three CRTs. if problem remains then you have to replace the focus/screen block. focus/screen block is one through which you can adjust the screen voltage and focus voltage. If the potentiometer in side it have some problem then this problem can occur. Have added the image for two items for your reference.
We have a Samsung LE32A457, whilst we were watching T.V tonight the top halve of the screen suddenly appeared with green lines halfway down the screen and that half of the picture was unwatchable, T.V is 2 years old. We have removed all scart leads but this did not help and the problem still exists, when shutting down a white horizontal line across the centre of the screen appears from this line upwards the picture is faulty. Any help or advice would be grateful.
Try taking pictures and download them to a computer. Check the colors and evaluate the quality compared to what you have seen in the LCD display. If the pictures are good and the colors seem to appear good on the computer, then some thing is either not adjusted correctly for the LCD or you may have a menu setting which is incorrect. Check all setting in the menus. Test the camera again, and see what the colors look like in the LCD display. If both the LCD display and the pictures on the computer are the same, then some problem exists in the camera, and may need fixing, or sell on a site such as Ebay for parts or repair as is.
TRY ADJUSTING THE SCREEN CONTROL ADJUSTMENT AT THE BOTTOM OF THE FLYBACK TRANSFORMER.THIS SHOULD REMOVE THE RETRACE LINES AND ANJUST THE HASY LOOK TO THE PICTURE IF NOT YOU HAVE A BAD CAP IN THE SCREEN CIRCUIT .LOOK FOR A 10MFD/250V CAP IF FEEDS THE NECK BOARD ATTACHED TO THE PICTURE TUBE 200V DC.