Question about Panasonic CT-27SL14 27" TV

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Ct 27sl14 has all 4 corners dark and the whole picture is rounded looking

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There are 3 caps i round that could cause this.
C457 100mf/25 volt
C455 100mf/35 volt
C816 100mf/50 volt
the first 2 are in the vertical circuit,last one in the power supply.

Posted on Sep 24, 2009

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I have a panasonic television that is very dark, the other colors are okay but when it goes to nights scenes, its very dark can this be repaired, the model number is ct-25G6E


It sounds like the master contrast has slipped. If you are confident with electronics, there is a little knob on the main board which allows you to set the master contrast. This is only applicable if the picture looks like it has too much brightness (like a white haze over the picture in dark scenes). Gently adjust the knob to set the correct contrast and you should be up and running. If that doesn't work, then your tube is on the way out.

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White corners SONY KDL52XBR6


This is called a dark shading error. All the LCD consumer sets have some visible degree of this effect. Some will be a little less or more than others even from the same batch in the assembly run. This has to do with the optical design quality of how the back-plane lamps illuminate the screen. The design and assembly tollerance of this area is very critical.

Normally, LCD screens don't show their best picture in a darkened room. The very black regions of the picture content may look a little washed out. LCD screens are best watched in a room that is lit, but not very bright. You have to consider that there is a powerful set of lights behind the polarized panel of the LCD display, and there will always be some breakthrough of light.

If you want a TV that is more like a CRT in its characteristics a Plasma would have been a good choice. The trade-off with the Plasma is that it does not have the picture sharpness of the LCD. A Plasma set is best watched in a darkened room.

If you have an LCD computer monitor, take a look at it in a dark room with a black screen. You will most likely see the dark shading errors. Only the very expensive production studio type LCD monitors have less of this error than the consumer sets, and they are not absolutely perfect.


Jerry G.

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I have a similar problem. Indoor pictures are ok but outdoor ones are bright and washed out like as if it is getting too much light. Tried to reset to defaults but no help. Suggestions ?(bobmelnick@hotmail.com)

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1 Answer

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Press setup on your foxtel remote, go to systems settings, and look for "TV Type" menu, you can change settings there, your TV is a 4.3 (square) not widescreen. Its not a telly problem your just giving it the wrong signal.

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1 Answer

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Check what the actual pictures look like when they are downloaded to PC or to print. The problem may only be on the screen. It may be very expensive to replace the screen, but you might be able to live with it?

Good Luck

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1 Answer

Dark area on screen


If it's a circular area you might be delaing with magnetism. Check the menu and there should be a control for geomagnetic correction and adjust accordingly.

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2 Answers

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check the ABL at the flyback and solder any bad connections there. U can increase the brightness at the flybacks buttom control .

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