No color My T.V. is no longer color. The Picture in picture has color, but the main tuner is black and white. What could this be?

PIP means the set uses either two tuners or a dual tuner--could be a issue with the tuner. If it has a swap feature in the PIP use it to see if color when tuner is switched from main to PIP tuner.

A possible way around the issue is to look to see if rear audio/video inputs have color---you could route signal from a box etc to one of those and BYPASS the problem if rear inputs do not have this problem(not likely they will).

Hi, this is a bad main board that is causing this issue you are experiencing. simply replacing this board will fix this issue.

Click Here

 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.  

There is no color chip. What it does have is called a motor driven color wheel. The problem is that the color wheel is no longer spinning to produce color. Replace the color wheel and you should be fine.

you have the cables hooked up the wrong way

this is usually due to bad ground check cable line comming into tv and
CHECK/RESOLDER CONNECTIONS IN TUNER WHERE CASING IS SOLDERED TO PCB NEAR 4TH FEED THRU BACK FROM ANTENNA INPUT

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

The colour for the tuner and for the encoded base-band video uses a circuit area called the colour demodulator. It is possible that this cirucuit area has failed and needs servicing.

Jerry G.

Your TV's tuner is the problem. 1st thing to try is just to sesolder its connections to the main circuit board. If that doesn't work replace the tuner. Also could put a meter on the power coming into the tuner and see if it is drooping in sync with your picture. Tuners are not that expensive to replace.

Give more info. In tuner mode, in component,rca or s-video input?

There are no bulbs inside this set to replace. This TV set is all solid state. That means it uses transistors and IC's to work. If the color is not there you could have a bad tuner assembly in this TV set and to replace that would cost you more then the TV set is worth. Sorry. Good Luck