Question about ASK Proxima DP6860 Plus Multimedia Projector

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Discolored image and lines...

Without even a source I can see a pink / red haze on the right side of the projector and as it heats up, lines and distortion becomes greater, mainly on the right hand side of the picture. This is from the default Proxima screen. And is the same if I plug in a source (so its not a bad VGA cable)

- I have replaced the lamp, with no change (it was just as bright)
- Does not appear to be anything on or stuck behind the lens from what I can tell.

I'm concerned there is a image sensor problem any thoughts on exploring this more?

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  • Anonymous Mar 18, 2008

    I am having the same issue and have also replaced the lamp with no luck. The lines are pink, blue and purple and are all over the right side of the screen. Any suggestions?

  • pv_info Jul 28, 2008

    Same problem...Projector works great for about 2-3 hours, then the vertical bars start appearing on the right side of the screen(projector is mounted on ceiling). The problem continues to get worse over the next half hour, until its so bad that I shut it off. What gets me is that after the unit cools, the problem subsides until it gets hot again. I picked up a DP6850 for parts, hoping it would have the same main board to swap out, but it is a different setup. I swapped out the optics since they are the same(LCD panels and lense are all one unit) hoping that it would fix the problem, but the LCDs are all out of alignment. They are soldered to the optical block, and that is very difficult to align. This is a crazy question, but does anyone know if the lcd panels can be aligned on the firmware/software side? Also, is there a service menu for this unit, if so, what is the key combo to get to it? Any help would be appreciated.

  • Munkee_B Sep 01, 2008

    I've been having a similar problem with my proxima dp6155. I got it used, and it worked just fine excep for a thin blue line on the outside of the screan, on the left hand side. Now I've had it for about 4 months and use it often. After having it on for a a wiel makes the colors kinda seperate. The time it takes seems to be random. It start with a little flickering of the colors, and its kinda like a shadow, and gradually gets more prominent with time. It dousnt seperate more and more, the colors or shadows just get brighter. I know a little about electronics so I disided to crack it open. I checked the circuit board out and didn't find anything burned out. I know the lamp has nothing to do with it, and the lenses don't cause that eather. So my conclusion is a heat issue. Ither the lcd's start malfunctioning after they reach a certain temperature or something running them. I have no clue how thes things work so I cant really do anything els with it. The weard part is, if I leave it on stand by the next time I power it up the problem i worce. If I turn the main swth of, or unplug it, I will go back to normal after I let it rest for a wiel. So thought It was something to do with the power converter or something besides the lcd screen aperatis. So, I added a fan in that section to keep it running cooler, but that didn't solve the problem. I know that sometimes when video cards are acting funny it's becase the memory is going bad, over-heats, or one of them blew. Could this be the problem?

    Also, acording to other postes I have read it seems o happen to units that have had many hours of use, Sometimes its because of dust build up or poor coolong. I on the other hand know as a fact that that is not the case here. I didn't actualy test the board for malfunctions because I really don't know what I'm looking for. Can anybody shed some light on this weard fenominon?



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I also am having the same problem. at first it only showed up after the projector was on for about 15 minutes. Now I get a purple vertical bar on the right of the screen. I also get vertical green bars spread across the screen.
Does anyone have a diagram of how this machine is assembled?

Posted on Apr 17, 2008


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