Question about Vivitek H1080FD DLP Projector

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I have sound from my amp but my projector is searching for signal so no picture

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Which input are you trying to use for the picture

Posted on Apr 04, 2011

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Posted on Jan 02, 2017

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I have a Sanyo plc-xt25 LCD Projector and when I plug my ac cord in, the fans turn on but no lamp comes on. I changed the lamp and still no picture. What do I do?


Every projector lamp is equipped with ballast. The problem area is ballast. Either the ballast is not getting DC supply or the lamp turn ON signal from the projector main board or the ballast is faulty. Remove the lamp. Connect the projector to the mains supply. Check the voltage at the lamp connector inside the projector without turning it ON. It should be around 65 volts A/C. (Warning: Multimeter will get damaged if the projector power is turned ON due to generation of high voltage) If you find this 65 volts then it confirms that it has DC supply & the ballast is functioning. The ballast receives the the turn ON signal from microcontroller through opto-coupler on the ballast. The ballast opto-coupler can be checked by providing external 5V DC supply between pin 3 (+ve) & 4 (-ve) in turn switches ON the lamp. If this works then there is no problem with your lamp & ballast. The problem lies with the main board. If this does not solve your problem then give me the feedback.

Aug 04, 2011 | Sanyo PLC-XT25 LCD Projector

1 Answer

My DLP projector SIM2 DOMINO D35 is turned on and works normally BUT picture is absent on all of inputs (projector shows NO SIGNAL, green indicators is ON). Sources of signal and cables are in order. What...


It is possible that the last time this was connected there must have been an higher input applied than is recommeded so that the input PRE_AMPS were loaded to fail.
You need to check with an signal trace on the input to find if an OP-AMP has failed or the LOGIC switching IC had failed.
Need to test using a signal tester and meter.

Jul 14, 2011 | SIM2 DOMINO D35 DLP Projector

1 Answer

When linked to my laptop, the Sanyo PDG-DSU21N Projector will not project on the screen. It keeps searching for computer/ s video...etc. When I click on Menu, I do not have an option to select...


You need to send your laptop signal to your projector by pressing the FN key and the key that says CRT/or an icon of a screen (this is located at the top of your keyboard). 3l toggles will give you different images. i.e. projector image only, projector image and laptop image or just the laptop and not projector image.

Jun 02, 2010 | Sanyo PDG-DSU21N Projector

2 Answers

I have an Acer DSV0817 projector with a remote control. While running a PowerPoint presentation, I am able to zoom in/out, however, I can not make the slides advance using the remote. Can you help me?


dsv0817 picture ok then hum sound comes up and picture then, gos into black @white source button pictur ok, but dos not last it sounds like aloss of a signal but still with a picture, dos the same with a video

Apr 08, 2010 | Acer Office Equipment & Supplies

2 Answers

DLP Projector connection to Laptop


you need to go to te control pannel and go to display settings then manually select the external monitor then hit apply it will open on your projector

Nov 02, 2009 | Office Equipment & Supplies

1 Answer

Infocus X1 picture freezes and dissapears and then comes on again


your display settings may be off, so change settings to factory reset and you may have to drop the resolution on your computer. you may also have a bad cable, so try a different cable.

Jul 03, 2009 | InFocus X1-RE Projector, Factory...

1 Answer

No picture, have sound


Sounds like the video cable from the receiver to the projector is disconnected. Check the video output cable on the receiver and the video input on the projector. If they are connected all the way then unplug them and plug them back in to see if that works. If it does not there is probably a break in the cable somewhere or something not set right on the output or input on the receiver.

Jan 02, 2009 | Knoll MA250 Amplifier

1 Answer

Hp vp 6210


connect the laptop with projector and power up the projector and select the input 'computer' now start the laptop. the Projector will automatically detect the signal. secondly also chek with the display setting set to 800x600 then check with higher resolution.

Mar 28, 2008 | HP VP 6210 Multimedia Projector

1 Answer

MITSUBISHI HC 100 PROJECTOR


Hi there

First try to bypass the box and put signal directly into the Projector from the source - i.e. DVD Player

If the signal still doesn't pick up , try using a different cable.

If the problem is solved , then your Converter Box is faulty.

If the problem still occurs then you might have a faulty Mainboard - as all the inputs on this Projector is situated directly on the Mainboard.

Hope this will help you !

Jan 03, 2008 | Mitsubishi HC100U Multimedia Projector

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