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My LG 42L c55 Lcd tv gives a poor picture of grainy appearance and colours aren't great too much glare on the whites tried adjusting various menu's to no avail and bought good quality scart lead which has improved it slightly picture is fantastic on xbox 360 through hdmi but picture through virgin box is poor the tv is rented is there something i can try or shall i get rental company to replace it?

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5 Suggested Answers

  • 1 Answer

SOURCE: Black/Green Distortion - Picture Quality - Wharfedale

This is no solution but a point in a probable direction.

A tech guy told me ALL the LCDs they have seen in their repair shop have "swollen" capacitors, this is due to voltage instability. Lowering the internal voltage regulator and replacing the swollen capacitors (which eliminate noise) apparently restores the LCD to new working quality. Without actually "seeing" my problem the tech said that should repair it. I have not tried this yet but eventually will begin that way.

Posted on Jun 08, 2008

  • 1894 Answers

SOURCE: we just bought a lcd

use the HDMI cable to see if there is a cable problem or a tuner problem


Posted on Aug 01, 2008

Slinteriors
  • 8617 Answers

SOURCE: poor picture quality on old 55" rear projection phillips tv

replace the coolant in the CRts. Very common problem with the older rear projection tvs. You can get the coolant replacment kit at the following link which contains the coolant and instruction CD.
http://servicemanuals.vstore.ca/

Posted on Dec 20, 2008

  • 133 Answers

SOURCE: LG picture quality

not true about the 200 hour thing, and the pic qualith can be a couple of things, if you have a cable box, it can be caused by a week signal, or a loose connection, if the cable is just going from the wall to the tv, you may want to reprogram the chanels

Posted on Jan 10, 2009

stergiou88
  • 66 Answers

SOURCE: toshiba 43

unfortunately the green color bulb must have burned. you should go to a repair shop.

Posted on Oct 25, 2009

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The picture is clear but the colours are distorted like a sort of heat sensor is on the figures. Images of green and purple like shadows on the people in the picture


Are you using the component input. This is 3 wire video. If all 3 wires are not connected color will be off. This is very common. Cable may also be bad. How does the tv menu look? Press menu on tv or LG remote. Is picture bad on all inputs?You need to determine if problem is the source or the tv set by trying various video sources and inputs. If the tv is at fault but the tv menu is ok I would suspect the main board. If the the menu is also bad i would suspect the t conn board.

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Color went in and out, no i only get fair black and white picture often grainy


I'm assuming here that this tv is being used for analogue reception because on digital you either get a perfect picture or when the signal is weak enough, nothing at all (common when trying to use rabbits ears or in poor reception areas). Assuming analogue then, when the signal is weak (grainy or snowy picture) the colour (called chroma) is automatically turned off because grainy colour is unwatchable. This is normal. Solution, a better aerial to provide a stronger signal.

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I purchased 42" LG Plasma TV and i need to know


There is quite a lot you can do. Go to menu, picture settings and select user 1. From here you can adjust everything from colour to contrast to warmth to sharpness. The best thing to do is to switch to XD manual adjustment and make sure the mpeg noise reduction is set to max. This removes artifacts and gives a better picture. Oddly, connecting via SCART rather than HDMI will give a more watchable picture if the HD broadcast is't at a very high bit-rate.

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1 Answer

Acer model AT3201W no picture?? Sound is great, everything is connected tightly. Checked the manual ...no help..


There are several things that could be the problem, as usual. However I did manage to get a set working with the following characteristics:
- Set powered on ok and displayed the Acer logo fine.
- All of the inputs had very low brightness and poor colour.
- The backlight was working and appeared bright.
- The picture was barely usable with brightness/contrast set maximum.

I figured the issue here was a loss of the picture settings in the eeprom in the unit. So I set about to find how to get to the factory menu to set these things. This assumes you can get a menu to display on the set.
To enter factory mode on the remote control press menu/menu/234/menu. You will see the menu displayed with some info in the top bar that is normally not shown.
Then on the front of the TV press Volume- and Channel+ at the same time and hold until the factory menu appears.
You may see that the RGB gain and bias values are low or 0.
If that is the case set the colour temperature mode to Standard and then adjust the RGB gain and bias values to the following:
R gain: 434
G gain: 482
B gain: 484
R bias: 270
G bias: 270
B bias: 264


Then set the colour temperature to Cold and enter the following values:
R gain: 434
G gain: 482
B gain: 484
R bias: 270
G bias: 300
B bias: 310


Similarly, for Warm adjust the values to:
R gain: 434
G gain: 482
B gain: 484
R bias: 300

G bias: 280
B bias: 264


Then, if this was the problem, the picture should be fairly adequate.

Hope this works for you...
BTW I must give some credit here to another poster who provided a similar solution to a different problem here:
http://www.fixya.com/support/t154524-tv_losing_its_channel_memory

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1 Answer

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it indicates that the problem is aspect ratio or pixel settings for thescreen
bring up the on screen menu and adjust the pixel setting to fit the screen or the apsect ratio to fit the screen
read the operators manual to see how the adjustments are made

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Lg 37 inch lcd tv model 37lg3000


You may have got a bad unit but more likly it's your cable you are using I have found with the newer HD units the siganal has to be real clean coming in or you do get a distorted picture. Try changing out you cable lead for a good quality cable,

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I need a bit more detail on the word "GRAINY". At the outset, your description indicates a poor signal source, but then the word grainy leaves the door too wide open. Clarify please.
Bri

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4 Answers

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Make sure that the color control level is set to the default or 50% to start with. This should be in the Video menu.

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Jerry G.

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