Progressively worse red "ghosting" when showing films....
A strange problem: * When playing a DVD start to get a red line around the outside of lines on images in the black areas (eg the edge of peoples faces, bodies etc) * The red lining gets worse during the film, getting thicker and appearing more * "Tapping" the top of the projector tended to make the problem go away for a time, but then it returned....however, once it became worse (thicker red lines, more red), then no amount of tapping could rectify. * This problem has occurred before, but seemed to go away (when playing a film some days later). However now it is back again. We often do public screenings so can't afford to be unsure if the projector will come through or not.... * The lamp says it has 85% left, so should be fine. After getting worse, the red "ghosting" appears even on the start up screen (ie it seems not to be related to the connection or a particular film). ....Please help - thanks
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Re: Progressively worse red "ghosting" when showing...
This could be either a connection problem internally or a problem with the red filter convergence. This is not a project to be attempted by an inexperienced person. The convergence adjustments should only be attempted with the proper setup and equipment. If you can solder, carefully open up the unit and look for poor solder joints and resolder them. You can also reseat all of the connectors and cables. If neither of the above ersolve the problem, take it in for service.
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How long is the cable run? If it's too far away then that's what's causing the "ghosting" effect. You'll need some sort of transmitter/receiver. To quick troubleshoot, bypass the long cable run, and use a shorter cable to connect to the projector and see if the issue still shows.
I have the same problem. I just replaced my 9 year old lamp with a new one from a seller on Amazon (for only $88) but the ghosting and red/green misconvergence is still apparent, especially on standard definition DVDs played on a BLU-ray player through the Sanyo projector.
I found where a poster on an Australian board wrote that he was able to make adjustments using a service manual to get the red and green LCDs back in alignment. He describes it here:
reset the settings to factory default. if you don't get the lines on the splash screen when you first start it up, try swapping cables. if that doesn't work or you do get the lines on the splash screen, you have a video processor chip issue. replace the main board.
Hi, I have an Optoma EzPro 751 that had a similar problem, although it got progressively worse until it only took about 5 minutes to begin acting up. I was really frustrated, as the bulb only had around 600hrs at that point and the picture was bright. After some searching of forums like this, I found someone else with the same exact problem, but with a Dell projector (made by Optoma). The culprit was LOTS of dust, built up on the circuitry, built up on the optics, built up everywhere! Solution: carefully open up the case and use canned air or an air compressor with a blow nozzle attachment. (warning-compressor air MUST be filtered first as it otherwise contains moisture and other harmful suspended contaminants) I was at the end of my rope, and this really worked for my problem. It's worth a try, but BE CAREFUL! There are delicate parts in there you don't want to blast apart with air. If you use the cans, buy several as it took me quite a bit of blowing with a compressor regulated at 90psi to get it all out. Good luck! -Paul
Hi, please try to replace the cable, try another input source and reseat or replace the bulb . If issue still present upon doing those steps you may need to call epson tech. support at 562-276-1300 so that they can verify whether your projector is under warranty or not and give some great option regarding your projector.
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.
The ghosting problem is a combination of both the lcds and driver boards in which case neither need to be truely replaced.. They use a specific voltage to transmit data to the lcds.. Each lcd is different and the driver board is programmed by the factory for the EE v.com setting. Unfortunatly with nec, they do not offer a service mode to go in and adjust the ee settings to correct the electrical convergance. So the only way to fix the problem is to replace the lcd with a newer one who wasnt worn out from long term heat.