Getting ghosting on letters when showing a PowerPoint presentation. Adjusted the Contrast and brightness, that seemed to make the lettering on the white background better but not on the colored background. This seemed to start happening after I changed the bulb out. Any ideas???
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Make sure your contrast isn't set too high. Most ghosting is caused by either contrast, brightness or tint issues. Try adjusting these settings. Also check if there is a Dynamic contrast setting for your TV as well as this can cause ghosting also.
Could also be that your paper is too fibrous of finish. I found this page because my typewriter was ghosting, too. I adjusted some of the settings and there was not a trace of ghosting. I put the settings back and still no trace of ghosting. Then I realized that I tested for ghosting on paper that has a much smoother finish. I was ghosting on cheap paper we use here at work. So, I don't blame the typewriter. I blame the cheap paper. My typewriter just likes good paper.
Ghosting or blurring vision happens due to a faulty video processing board. It may be due to faulty T-con board (BN81-01308A) or a main board ( BN94-01199B ). However, you'll need to check the wiring on both of these boards. Before this I'll suggest you to callibrate the TV by following these settings--
The best way to test for ghosting or Double Imaging caused by the fuser is to run a copy and shut the machine off just as the copy starts to exit the copier. Then open the right side door and open the fuser gate with all the teeth on it. This will release most of the fusing pressure. Gently pull the paper backwards out of the machine. About the bottom 1/2 of the page will have NOT gone thru the fuser yet and you can tell if the ghosting is present. If it is not then the ghosting is coming from the fuser. Note that ghosting caused by the fuser usually does not show up evenly across the whole page. It is usually in bands, lines or one one side or the other.
Good Luck and Thank You for using Fixya.
I've been looking into this myself as I've also recently purchased the KDL-40W4000. I was watching a murky old film and was getting a bit of sludgy ghosting but found that by reducing the contrast to 25, setting the backlight on low, colour on neutral and the brightness about 40-60 (and taking ALL advanced noise functions off), this reduced the ghosting considerably.
BUT, this is quite a cool and dark image. If you watch standard TV and films mainly, a variation of the Cinema setting is probably the best overall setting i.e.
colour temp: Warm 2 (although Warm 1 is less yellow and still fine)
noise reduction: off
mpeg nr: off
contrast enhancer: off
colour space: standard
I have the same Hitachi CP-S860 and have found the problem is with the convergence on the left and right sides of the picture. The one I am working on has a bad ghosting problem also - you can really see the ghosting when the MENU is on the screen. The center convergence is OK. Following Pics show Circle / Cross pattern - 1st pic the red, green and blue are turned on - 2nd pic shows green and blue on only. I do not have the service manual for this set so I do not know the convergence procedure on this one. I have mostly been repairing NEC, Sanyo, Panasonic and Christie LCD & DLP Projectors.