Question about Sony VPL PX31 Multimedia Projector

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Panasonic PT-L501U Projector will not display inputs from RCA or S-Video. I have checked input sources and settings. Projector will display menu screens but nothing else.

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  • BigPhillip May 30, 2008

    I have the same problems with an SONY VPL-PX31, but it will display from my computer using VGA. Is this a mainboard problem or is is it locked in computer mode, somehow

  • BigPhillip May 11, 2010

    Marrie,



    Big Phillip,



    It works great using VGA, displaying from my Laptop. I use the SONY Projector Station software and its receiving a Signal on the all of the inputs. It's works sometimes from the component output from my AV Receiver, but sometimes when I turn it on, it has the signal, but won't display a picture or may flicker and go blank. Its not the bulb (NEW)



    MainBoard ?

    Ballast ?

    Dust ?



    Help ME..........

×

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  • 563 Answers

Hi BEEZELLE

Does the VGA input work ?

If not then the Mainboard is at fault and will need either repair or replacement.

Posted on May 13, 2008

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1 Answer

Is Panasonic projector PT-LB20U compliant with HDCP?


Since the PT-LB20U only has VGA, S-video and composite video inputs, it isn't HDCP compliant. You would need a device with DVI (sometimes), HDMI, or DisplayPort inputs. See page 15 for the connections available on the projector.

Panasonic has the manual for the projector on the product page: http://shop.panasonic.com/support-only/PTLB20U-EC.html . The direct link to the manual is http://service.us.panasonic.com/OPERMANPDF/PTLB20NTU.PDF .

I wish that I had better news for you.

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(the high definition copy protection details require the digital video signal capabilities of the newer inputs. Most digital to analog converters (HDMI to VGA, for example) do not support HDCP.)

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Will it work if you change the input to manual and select the correct imput source?

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This is likely a problem with the receiver not the projector. If the setup screen from the receiver is displayed through the projector, then the projector is functional. If the actual signal is not displayed, then the receiver is not sending the signal. The setup screen is generated inside the receiver and is injected later in the video path than the input signal. Try a direct connect from the signal source (other side of the receiver) to the projector. Again, if that works, then the problem is the receiver.

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Have panasonic pt l701u projector using RCA input can't get picture can get sound. Tried changing settings and it didn't help.


Pleeaes connect Rca cable in Yellow port for video and white port for audio.

Also check input settings in projector Menu. it should be "video".

For your ref, diagram is below

Thanks,
Vijud416f03.jpg

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was this bought new or second hand?
There is a "Lamp Time" setting that can be accessd using your remote control, check this setting.
Look on page 40 and after that of your manual about ambient temperature bulb failure.

By powering off or hittign the reset button the bulb should stay on IF the projector is gettign a signal from a device to show an image. If the projector is not hooked up to a device, laptop, TV, etc. the bulb may turn off to save hours of operation.

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Composite video are yellow RCA jacks and are made for analog signals of standard definition video. If you are connecting a digital source or a high definition output, it may be beyond the capabilities of the projector. You may be able to find a VGA to composite adapter if you laptop or whatever has a VGA output port. VGA is along the same lines of composite (analog, standard definition).

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Very confusing posting !

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