Question about Prima C2012 TV

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Prima 32 Intermitant color, when the set is turned on the colour goes from normal to no colour, ie. red is seen as blue, and the whole picture has a blue tone.

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My audiovox 32" 3205 died a few weeks ago and took


Not a projection set if 32 inch---If looks like blotches try turning set with it on to see if they change--if so you may have not plugged the degaussing coil (usually a two pin plug) back in when you did the repair--it goes on the power board.

Jun 16, 2012 | Televison & Video

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SONY TRINITRON ONE COLOUR PREDOMINANT SCREEN


Sony Trinitron sets are of CRT [Caothde Ray Tube] types. The common fault seen in these type of TVs are any one colour predominant on screen wih sound OK. Either red, blue or green colour with some thin horizontal lines at about an inch apart will be seen on the entire screen. This is totally a display card problem, which can be seen pluged onto the picutre tube neck. There are three electron guns for every picture tube, which emits red, blue, and green beams, which in turn illuminates the phosphor on the screen to get that colour. If no emission from all guns, results in a blank screen, ie black screen without any disply at all. The three colour beams together produces proper coloured picture what we see on screen. These three gun's terminals are brought out by pins of the picture tube outside to which video signals are given in appropriate proportion to produce a TV picture. Normally, all these three pins are biased with a voltage of about 170 to160VDC+ve. Take one colour gun, as an example and and let me describe the problem.
Let it be a green gun. These guns are called cathodes of the picture tube. If it gets a voltage with respect to its grid, it will emit electrons according to the voltage applied to it. This is a negative process, that is, as the voltage at this pin drops, its emisson incresses and vice versa. If the emission increase, the colour with respect to that gun also will increase and gets predominant at the screen. So when we see a green predominant screen, there will be less voltage at the green cathode with resepect to the other two. If red colour is predominant, the voltage at red cathode will be less than the other two. If blue colour is predominat, the voltage at the blue cathode will be less than the other two.
We must find out the reason for this fault first. Assume that your Tv has a red predominant screen with some thin lines across it, at about one inch apart of the entire screen, it is clear that the the red cathode voltage is very lower than the other two. the main reason for this fault, normally seen in most of the Sony Trinitron, are loose soldering points either to the picture tube base socket or the resistor connected between the red drive transistor's collector point. Resoldering the most of these points on the base card by applying a little more solder will rectify this probelm. Other possibility is shorted video output transistor of that cathode. A direct short [collector to emitter] of these transistors will drop volatge to very low at that respective cathode of the picture tube, and that colour will be pridominant along with lines. Replacing the transistor will solve the problem. In some cases, the resistor connected to that transistor may have blown out. If so, it should alo be replaced. Whatever the case may be, voltage at the respective cathode that emits colour will be very low with respect to the other two. Find out the reason and rectify it. You can compare the voltages of the other two cathodes with respect to the faulty colur cathode. Cathode pins will be marked on the base card, and can be identified. It is best to pull out the base card from the picture tube neck and place it somewhere a safe place without shorting it with other parts of the TV. You can measure the voltages of these points very easly, without fearing the damge to the picture tube. After all are found Ok, replug the base card and switch on the TV. The set will be alright. In rare cases, chroma IC also can be a reason for this fault. if it is faulty, after a short period after switch on the TV, the IC will overheat and shutdown the entire system.

on Mar 21, 2011 | Televison & Video

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On a land rover discovery, windscreen wiper motor, there are 5 coloured wires. Can you tell me what each one does, ie. green -- earth brown -- constant + red -- fast blue -- slow black -- intermitant...


Ok, here are the wiring colors and functions/destinations. C0030 is the motor connector for the front windscreen.
C0030-1 - Black, runs to a Earth
C0030-2 - White/Green - Fed from the front wiper relay, via the IDM
C0030-3 - Blue/Green - Flick Wipe/Fast Wipe
C0030-4 - Green/SlateGrey - Power from Aux Relay
C0030-5 - Red/Green - Looks to be a speed control connection.

It's hard to tell to be honest, you'd really need to sit down with RAVE and the electrical circuit diagram and the operation description to make head or tail of it.

Sep 01, 2009 | 1999 Land Rover Discovery

1 Answer

Toshiba 32a43 32' picture garbled mess


If you can get the tv to display the blue blackground(usually happens when there is no antenna or cable feed to tv) check to see if the whole screen is a solid blue, if it shows discolored areas around the screen then you might have to "demag" the screen. See if you can rent a demad coil from a tv shop and with tv on turn the coil in circular movements all over the front of screen till blue is solid.good luck!

Aug 03, 2009 | Toshiba 32A43 32" TV

1 Answer

Philips 23PF9966/37 color problem!


Most likely you can adjust it in the Service Alignment Mode (SAM).

Press 062596 followed by the STATUS button (upper left). Navigate to "White Tone", press the right key to enter and select "Normal" mode. Set the colors:

Red = 135, Green = 128, Blue = 133.

The "Cool" and "Warm" menus are deltas from the "Normal" settings:

COOL: R -3, G -1, B 5
WARM: R 2, G -3, B -13

Press the "MENU" button to return to the main menu, then the "Power" button to turn the TV off.

Jun 15, 2009 | Philips 26PF9966 26 in. LCD Television

1 Answer

No sound or picture on my prima plasma tv


I HAVE A NICE PICTURE BUT NO SOUND

Sep 30, 2008 | Prima CV2011 TV

1 Answer

My webcam shows only red


basically we use RGB color system so it contains color like red green and blue....in ur web cam settings u only increased the content of red color and u decrease the content of green and blue...so pls take ur settings and put all three colors to a same number...it means u have number from 1 to 100 and u can give the red green and blue colors up to this limit....so put green in 32 and red in 30 and blue in 32......then it will b corrected

Sep 20, 2008 | Logitech Webcam

1 Answer

Bush RFT TV


The picture tube of the tv has 3 color in CRT Red, Green, Blue. The red cathodeof tv set has no function, its either the resistor become higt resistance, that why u need a repairman to replace it.

Apr 10, 2008 | Televison & Video

1 Answer

Colour problems with projector


In short If the reds show as red, The greens show as green & Blue shows as blue. I would say thats as good as it can project. It's hard to judge color without seeing it for ones self but usually DLP projectors that use a colorwheel do not have perfect color.

Feb 13, 2008 | Office Equipment & Supplies

3 Answers

Picture color


have JVC AV-32F702 TV. It's picture color is very red. unable to adjust colors through menu. Channel numbers are also in red now instead of normal green. any suggestion? please check red color cathode circuit 1 check red output from ic to red cathode ckt 2 check voltage on r output ckt& ic or tr. 3 check loose contact in red cathode ckt 4 check crt base for loose. 5 loose connector 6 chroma ic thanks

Sep 09, 2007 | JVC AV-32F702 32" TV

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