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Re: rca tv dispolay is black and white. color?
Windows does not recognize the tv and if you are using a cloned driver it is trying to use the tv with the vid adaptor drivers as the tv drivers you are using the basic generic drivers from MS beacause it does not know what it is download the proper drivers and go from there
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Id the TV Anolog or Digital? If it is analog, then the digital receiver must have RCA outputs to meet the TV's RCA inputs. To make an old analog TV work (meaning getting a picture), you have to check id the receiver has RCA or S-Video outputs. If so, then connect an RCA cable with yellow into yellow, red into red and white into white and then connect the same colors plugs to the yellow, red and white to the RCA inputs of the TV. Or, you can connect a S-Video cable plugs in the output of the receiver and the input of the TV, disconnect the yellow RCA plugs at both the receiver and TV sockets and leave the red and white cable for sound only, as S-Video has an improved video signal, therefore better picture quality. On the TV you have to select an AV input channel, like AV1 or AV2, etc. The same channels that you had used when you were once watching VCR tapes on analog TV. Hope this helps.
When you connect the computer to the monitor via an analog VGA cable, you get signal on the analog input. When you connect them via a DVI cable, you feed the monitor's DIGITAL input, so the monitor doesn't get any signal on it's analog input, and informs you about it. You have to select the digital input from the monitor's On Screen Menu, and then start the computer up - you should see the picture OK. Also remember to set the display resolution on your computer to match the optimum (native) resolution of your monitor - this will give you optimum picture quality. In case of VA712B it will be 1280x1024. Good luck and please come back with a testimonial if helped.
Three guns Red Blue and Green in the picture tube of an old CRT set. If one of the guns goes out it effects that color. Sounds like one of the guns inside of the tube is going out, To costly to replace for such an old antilog set that will have to have a convertor box next month anyway.
It sounds like the circuitry which actuates the color drives for the screen are not working, this would ba analogous to adjusting for a B&W picture on a color TV you have color but the screen shows black and white. I would get a schematic for this set and measure the voltages on the color processor that connects to the screen since you know that the external jack has color. If possible I can help you troubleshoot this, if you need me to help out.
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.