Dear AVS Forum users, I come to you a broken man. My projector set up has caused me endless sleepless nights and worry. So, if you have some time I'd like to tell you about my woes in what, I sadly feel, will be a pointless attempt to solve this highly irritating problem.
I currently own a Sanyo PLV-Z3000 projector bought new earlier on in the year. Previous to this I owned a Sanyo PLV Z700. Both of these projectors suffered the same problem. Namely, uniform faint vertical lines/bars down the entire image. I tried and tried to solve the problem with my Z700 even sending the unit to a Sanyo service centre, who assured me the unit was in perfect working order. It was returned but the problem remained. Eventually I had to give up and return the unit for a refund. I was beaten. I decided that lightening couldn't possible strike twice and upgrade to the Z3000. I was wrong.
Now, part of this tiresome problem has been the freakish discovery that when the projected image is shown on a completely smooth surface, such as a white piece of paper, the vertical lines do not appear. Only when the image is projected onto screen material do the vertical lines appear. I have tried four separate screens from three different manufacturers. - Projecta, Sapphire and Beamax. It could be that these manufacturers all use the same material
supplier, I don't know.
Vertical lines/bars on screen surface(upper part) and absent on the back of a note pad held in front of screen(lower part.)
When I contacted Sanyo directly they informed that as the image was clean, when displayed on a perfectly flat surface, the projector could not be at fault. Meaning the problem was with the screen I was using, all of them.
Exasperated, I took to the internet forums and asked owners of Z700 to look for these vertical lines on their set-ups and to tell me what screens they were using. None of the owners saw the problem and two owners had screens made by a manufacturer that I had used.
I then had to rule out environment as a cause. I did this. Oh man, did I do this. Cables, positioning and anything else I could think off were changed, moved and removed. Still the problem persists.
Vertical lines/bars on screen material
I know this is a long shot but I was hoping that someone here may have an idea that I have missed. If I cannot solve this problem then the unit will have to go and I'd rather not do that as I got an excellent deal.