I have owned my M8000 for 4 years now without any trouble. I love the projector as does my whole family.

Recently, I noticed that during very dark scenes, the right half of my picture looks lighter than the left half (I believe the left or darker half is the correct looking half). The difference in lighting is very abrupt giving the appearance of a shadow line running straight up and down in about the middle of my screen (as if a dim light was shining through an open door and just striking the right side on my screen). Have any of you run into this issue? I can't image that this is a unique problem. Does any one have any idea on how I would begin to troubleshoot this problem.

I searched this Forum but could not find any related discussion.

I appreciate your time and input.

Thanks.

Can you tell if its on all three tubes or maybe just one? turn down contrast when this is happening and look into each tube and tell us what you see. I have heard of the picture folding over , and i think this is caused by the Horizontal deflection modual, but cant help more till we can know more.

Athanasios

I will check it out. Thanks for your suggestion.

I believe you want to perform the tech bulletin on Curt's site, 7th from the bottom.

Cheers
Jim

I believe you want to perform the tech bulletin on Curt's site, 7th from the bottom.

Cheers
Jim

I knew i have read this problem somewhere and that might be where.

I'm goin got check it out.
is this the repair?

http://www.curtpalme.com/docs/ElectrohomeMarqueeTechnicalBulletin_Tb95-10.pdf

Athanasios

http://www.curtpalme.com/docs/ElectrohomeMarqueeTechnicalBulletin_LineFix.pdf

See if the pictures at http://www.curtpalme.com/forum/viewtopic.php?t=5130 look like your problem. That LineFix repair is supposed to fix that. I haven't had a chance to do it on mine yet but CZ Eddie did, and said it definitely solved the problem.

Thanks for your collective thoughts on this.

I looked at a few things and can add the following. When I put up the internal white test pattern and adjust the contrast and brightness up and down, there is no sign of the anomoly on any of the rasters or on the screen. However, I put on a DVD and played it to a spot where the scene was dark and the shadow was visable on the screen. I paused the DVD at this point and looked into the lens. The anomoly was clearly visable on all three rasters, but more pronounced (more visable) on the green tube. I took some pictures of the tube faces and will try to get them up here (once I figure out how to post a picture). I am confident the problem is on all tube faces, so it not just a specific tube problem.

The idea that the picture is "folding over" seems to fit, although the picture on the screen is clear enough (it just has this shadow appearence in low light scenes).

Again, thanks all for your thoughts

How is the easiest way to attach a picture here?

FWIW, I don't think either of the tech. bulletins listed so far ar causing this problem. The problem on this 8000 appeared suddenly, and it's right in trhe middle of the screen. The "line fix" bullet is usually seen on the right side of the image and I think it only applies to the newer 8500 VIM's. This is most likely a deeper problem on the old 8000 VIM, those machines were known for faulire prone VIM's, neck-boards, and power supplies.
Smartbidder I have a couple of the old 8000 VIM's lying around in my shop. If you cover my time and and shipping= $25, I'll send one out to yuo.

draganm, please email me at jpl@cableone.com. We can corespond about the sale there. Thanks

So here are the pics I promised (hope this works)

The first is 95769(with the DVD in pause). It shows right half of the green raster through the lens. You can see what is the “bottom” of the picture shown on the screen (upside down) on the top of the raster. You can also see the green bright portion that extends upward beyond the “bottom” of the picture. On screen, this would appear such that the right hand side of the picture would look brighter than the left hand side. The brightness would extend beyond the picture all the way to the top of my screen.

This is the same screen shot through the red lens. 95770 You can see the same effect, but dimmer. So the area of the effect is the same on all three rasters.


Thanks for your thoughts.