Suddenly color gone and the picture is in black and white.
tv menus still in green.
after 2 days being off the color came back for 15 minutes ,then went off again.
now it doesn't come back anymore.
this tv is about 13 years old , any suggestion what's the problem?
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Re: color is gone in a sony kv-c2963e trinitron tv
As you say that color came back for 15 minutes then went off.
this is a clear indication that there is a loose contact or pcb crack somewhere in color section only.
if that happens to be ok then check
1 antena or cable socket loose
2 loose connector in color section
3 print open or crack near chroma signal processor.
4 loose near color control.
5 chroma ic night be defective.
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Just do a hard reset to this set and check. To make it a hard reset, unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If this do not help you, the main board to your TV is faulty. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/
Check its color system adjustments. It will be best to make a factory reset to this set. Just unplug the TV from AC mains wall socket, and re-plug it after 10 minutes of so. This must make your TV a hard reset. If this do not help you, the chroma section circuits of your TV need to be checked for fault/s. This is a skilled work, and it will be best to contact any experienced service technician.
Wow that's interesting, was there anybody watching your home while you were gone? There is a possibility that someone simply turned down the color level with the color control? Check that first. It's an unusual symptom. With composite video, component video or HDMI it's not usually possible to experience that defect. Since the color (chrominance signal) is usually inseparable from the luminance (black and white signal) I would check the color setting first. Other wise your set has become unable to detect that color signal... I bet it's a setting rather than a defect.
Pioneer Elite Pro rear projection 620HD - Picture is still there but brightness and "white" have faded over years allowing for mediocre viewing when room is dark only. During the daylight picture is visible if viewed straight on and within 15 feet from set. Any suggestions?
go into menu turn color off see if you have a black and white picture if not adjust red,green, and blue screen drive on controls in back of tv you have red, green, blue it will have focus /screen controls cover each tube do one at a time blue focus and screen drive adjust to clear blue picture do all 3 tubes, then adjust them to where you have a black&white picture once this is done turn color controll back on.Thank You for using FixYa and Have a Nice Day.
If this is a 32 inch TV then it is a standard picture tube set. If the colors have suddenly gone out of whack, and the set has not been dropped or had any large magnets near it recently, it means that the degaussing thermistor has come loose from its legs. This is very common in the RCA regular picture tube sets. If you look in the back of the set you will see a large black coil of wire wrapped around the edges of the picture tube, with 2 white wires going down to a jack on the main PC board. Right next to that jack is the degaussing thermistor, which looks like a small silver disc, like a nickle, with 2 legs loosely soldered to its sides. One or both of those legs are probably loose, and if you are very careful you can solder those legs back onto the thermistor. If you do not have experience soldering small parts, allow a qualified tech to handle it for you.
If the settings are correct and the signal is good but there is no color, it can only be one of 2 things - the CXA jungle IC and the chroma crystal next to it. If you have never replaced small parts on PC boards then have a qualified tech handle it for you.
The route through the circuits in the TV from the various sources all lead to the final video amplifiers for red green and blue.
Somewhere along the route is a circuit called a colour switch. This allows colour if the signal is strong enough, otherwise it only allows black and white. This fault suggests a weak video chip which is the one just before the switch circuit. the fault could also be a faulty coupling capacitor to or from this chip, or a low power supply voltage. Check for dry soldered joints around this circiut.
Please note if resoldering on new televisions that they may have non leaded solder which requires about 50 degrees centigrade hotter iron.