Loss of color

Hi,

the accessories replacement was a smart move. Please attempt to run a channel scan before updating your tvs firmware. Otherwise, I would run a factory reset on the tv and watch for the display-color issue again.

Thank you.

The black usually goes to the L. The others you'll have to play with, If it's the correct switch. You should mark down what color wire goes into which slot BEFORE you take them out. DO NOT CUT WIRES!
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Hello,

This means absolutely no color - equivalent to a black and white picture. Not even a hint of color.

First, confirm that the source is actually in color - try another channel or input device.

Next, check the settings of the color control - it may have accidentally been turned down. If your TV has some kind of automatic picture mode, try turning if off and adjusting the color control. Try adjusting fine tuning if you have such a control and the problem is with a broadcast or cable transmission.

At this point with a confirmed color signal source, there is a problem with the chroma circuitry.

Note that to the average person, the obvious question becomes: is my color picture tube bad? The answer is a definitive NO. It is virtually impossible for a defective CRT to cause a total loss of color. A defective CRT can cause a lack of a primary color - R, G, or, B or a short between two colors which will mess up the color but is not likely to result in a black and white picture.

Some possibilities in no particular order:

Weak signal or defect in tuner/IF causing loss of signal strength.

Coler killer set too high (internal control) if it has one.

Defective part around the chroma chip/circuit. Faulty color oscillator.

Bad connections in area of chroma chip/circuit.

Defective chroma chip (don't suspect this first just because it is probably very expensive).

Try prodding the main board around the chroma chip with an insulated tool to see if you can make the color come and go.

I had one set where a $.02 resistor decided to open up causing just this problem - perfect BW picture, no color. Another had a coil with a broken wire.

If you go into control panel then go printer options you should see your printer icon. Right click on it and go printer preferences or printer properties and I think there is a colour tab where you can set it to just back and white

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Please note. Not all installers use the proper color codes when they install or replace equipment. It may be necessary go go to the furnace or outdoor unit to verify what wires are for what purpose. Also be sure there are no splices in the wire that could change the wire colors between components.

• R (red) or Rh (Red heat) 24 volts from equipment.
• Rc (Red cooling) 24 volts from transformer in cooling equipment.

Note: If only furnace has a transformer and cooling equipment does not jumper Rc and Rh.

• W (White) sends 24 volts to furnace control to start the heating cycle.
• W2 (no standardized wire color, usually whatever wire color is available) controls second stage heat.

Note: W2 is most often used for heat pumps to control what is called emegency heat or Auxillary heat, and most often will use the white wire.

• Y (yellow) often (blue) is used, controls cooling unit (outdoor condensing unit) also is used for heat pump heat.
• Y2 (no standardized wire color, usually whatever wire color is available) controls second stage cooling.
• G (Green) controls the fan "on" operation of the furnace/air handler. Also often is used to start the blower for many electric furnaces.
• C (common) most often brown but can also be black or other color available to installer.
• O (orange) Energizes heat pump reversing valve for cooling (Trane and most other brands).
• B (Blue) Energizes heat pump reversing valve for heating (Rheem, Ruud and Weatherking).

 First, confirm that the source is actually in color - try another channel or input device.
Next, check the settings of the color control - it may have accidentally been turned down. If your TV has some kind of automatic picture mode, try turning if off and adjusting the color control. Try adjusting fine tuning if you have such a control and the problem is with a broadcast or cable
 transmission.
At this point with a confirmed color signal source, there is a problem with the chroma circuitry.
Note that to the average person, the obvious question becomes: is my color picture tube bad? The answer is a definitive NO. It is virtually impossible for a defective CRT to cause a total loss of color. A defective CRT can cause a lack of a primary color - R, G, or, B or a short between two colors which will mess up the color but is not likely to result in a black and white picture.
Some possibilities in no particular order:

1. Weak signal or defect in tuner/IF causing loss of signal strength.
   
2. Coler killer set too high (internal control) if it has one.
   
3. Defective part around the chroma chip/circuit. Faulty color oscillator.
   
4. Bad connections in area of chroma chip/circuit.
   
5. Defective chroma chip (don't suspect this first just because it is probably very expensive).

A service manual or Sams', DMM, and scope will help greatly in attempting to troubleshoot this unless it is an obvious bad connection. Try prodding the main board around the chroma chip with an insulated tool to see if you can make the color come and go.
I had one set where a $.02 resistor decided to open up causing just this problem - perfect BW picture, no color. Another had a coil with a broken wire.  

I have a blue-ish yellow ghost tint which just appeared on my 51" 51SWX20B made July 2002. Did the magic focus got a number 5 at the end. Did you get a number when you did the magic focus?

1) Loss of color = bad solder connects on signal board

2) Loss of pix = probable CRT coolant leak onto signal board
Have a technician check it out.....can be expensive......T.

Check the WHITE BALANCE settings and the COLOR EFFECTS settings (marked as W. BALANCE and COL. EFFECTS when MENU is pressed).

When you got to the MENU setting, press up or down arrow until you reached either selection, press the left arrow, and you'll see several options under the selected function. In WHITE BALANCE, there's an option whether you'll be shooting under sunny or cloudy skies, tungsten or flourescent lighting, and an option to select Auto or Manually set White Balance. This affects the over all color tone as it compensates the color correction depending on your shooting conditions. Fluorescent lighting for example exhibits blue spectrum, thus setting White Balance to FLUORESCENT will add warm or yellow tones to the photo. Tungsten lighting and sunny conditions exhibits yellow lighting, and setting to the White Balance on this mode will add cool or bluish tone to the picture.

Same with COLOR EFFECTS: settings include WARM, COOL, SEPIA or BLACK AND WHITE (gray scale).

Chances are, you have accidentally set the WHITE BALANCE or COLOR EFFECTS to any of these. To see if this is the problem, try shooting under SIMPLE MODE (Marked with a HEART icon at the rotary dial on top right of the DMC-FZ7). If the problem goes away, then it is with the WHITE BALANCE and the COLOR EFFECTS settings. Try setting the COLOR EFFECTS to "OFF", and the WHITE BALANCE to "AUTO".

If all else fails, then you got a problem with the image sensor of your Panasonic DMC-FZ7 Digicam


MANNY DE GUZMAN, JR.
SoundMagik Home Studio
Manila, Philippines
Site Creator, TEENMODELS2007
http://teenmodels2007.wetpaint.com/

try resetting the tv back to factory settings under within the tv's menu setting you should find a setting to reset the tv, most likely all the color and contract settings may have been tunred down,