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Projector has vertical black lines going through the picture and cannot remove them. my projector is an lg hs102 and am using an rgb lead to plug up to aspire 6930 laptop.

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If they are thick and shadowy, the light tunnel is collapsing. if they are thin and defined, check the resolution. reset the settings to factory default.

Posted on Nov 10, 2009


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Multiple reddish pink vertical lines going from


We can check if the problem is on the hardware(projector) itself or if from source(device connected to projector) try to turn on projector without connecting any other devices to it. If you can still see the pink line- try to remove bulb and reinstall it. If all fails and pink line still visible, there is a problem with projector. If no line is present- check settings and change input signals.

Hope this helps

Mar 26, 2010 | ASK Proxima DP6860 Plus Multimedia...

3 Answers

Very faint horizontal lines moving from bottom to top of picture why??

This is most likely the result of a "Ground Loop" If you are using the composite or component (RGB) inputs and experience these slow moving lines/artifacts it is caused by a voltage potential between the ground reference/pin of the projector and the video source.
There are several ways to correct this... 1) You can use a ground lift a (3 prong to 2 prong) adapter where the projector plugs into the AC power socket. 2) you can use a video "Hum Bucker" to isolate the ground potential between the video source and projector which is placed in series with the video feed to the projector. (very expensive) 3) If possible try plugging the projector into an AC outlet that is common to where the video source is getting it's power. For example have the projector and video source (receiver etc.) share the same AC power receptacle with a plug strip or similar device.

I don't know how your system is setup exactly... The ground voltage potential could be developing between components before the projector (not likely)

Good Luck!


Oct 30, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

A vertical white strip appears after few minutes.

Hi fabiano did you ever find a solution the vertical line in your RD-JT91 Multimedia OH projector. I now have the same problem. Gary

Oct 02, 2009 | LG RD-JT91 Multimedia Projector

1 Answer

I have two dark black vertical line

there may be the problem with the Tunnel. it will be in the Optical Unit. That needs to be replaced.

Jul 07, 2009 | InFocus LP 340V Multimedia Projector

1 Answer

Sync issues with Direct TV HD recievers

Hi Michello

I'm afraid it is indeed new Projector time.

Mar 23, 2008 | SharpVision XV-DW100U Multimedia Projector

1 Answer

Pink tint when usig the RGB component cable

Check the green signal lead - if one of the RGB leads doesn't make good contact, the picture will take on an odd tint that doesn't always look like it's missing one of those colours. For some reason, the green is always the most common one to fail.

Feb 28, 2008 | NEC MultiSync VT540 Multimedia Projector

2 Answers

White vertical line on left side of screen

I had a smililar problem after taking it apart i realised that i had screwed my mount skrews into the video main board and cracked it along with a few soldered wires, if you havent done any physical dammage to it try a firmware upgrade

Jan 20, 2008 | InFocus IN72 Multimedia Projector

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