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Benq 7220 display wrong color

The display suddenly loss yellow color, there's a white bar at the bottom of the display. What should be green shows magenta and what should be yellow shows blue.

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  • Milburn50 Feb 28, 2008

    My Toshiba ET1 has gone yellow!

    I can change the levels of green and red in the image, but not blue. Blue appears colourless or grey. I have just changed the lamp in the last 24 hours and I have changed all the cables and tried different input sources (PS2 and PC)

  • jbbartley Jun 26, 2008

    same roblem except no white bar on screen

  • jbbartley Jun 26, 2008

    same problem, except no white bar on screen

  • vgy007 Jan 12, 2009

    I have exactely the same problem: no more bleu color on my screen and a yellow band on the top of the screen!

  • Anonymous Mar 19, 2014

    when I go to presentation mode it shows my tool bar at the bottom and the file name accross the top. how do I not have it show

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  • 261 Answers

It sounds a lot like a bad color wheel if it was a DLP. IF it is a LCD then i would say one of the LCD panels is bad or possibly a connection problem that drives the panel or the connection that hooks up to the projector is suspect. Let me know if that helped you at all.It is strange that the bottom shows white though. Jay

Posted on Jan 31, 2008

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A line vertically down the screen (usually bright green) is a failed column strobe. This can be caused by the connections at the top of the screen failing or the strobe chip starting to die.

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I own a toshiba 19dv500 and am having trouble viewing a dvd, the system is working but only in black and white, no colour\???


Hello there,

A black and white picture is most often due to a faulty or incorrect RGB (red/green/blue) connection or cable.


If you are using a composite connection (red/white/yellow RCA jacks), you have probably connected the yellow plug to a socket labelled Pr/Pb, Cr/Cb, or Y - on either the DVD player or the TV - most probably the TV. The yellow needs to be connected to a socket labelled "VIDEO". If you connect this to any socket labelled Pr/Pb, Cr/Cb, or Y, you will get a black and white picture.

If you are using a component connection (red/green/blue RCA jacks), one of the plugs is either not fully inserted into the socket or is in the wrong socket. If you remove any one of the R/G/B plugs, you will get a black and white picture.

If you are using a SCART cable (UK / AUS), you may have a bent, damaged or disconnected pin.

I suggest you check and correct the connections between your DVD player and TV. If you are unable to locate the problem, please try another cable as the one you are using may be damaged. If you are still unable to locate the fault, please let me know the brand and model number of the DVD player and how it is connected to the TV. If required, I can also draw a diagram showing the correct connections.


It would also be useful to know whether this "fault" suddenly occured, or whether you have just connected the player to the TV.

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ENTER...................... AFTER EACH COMA

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