in side the projector is a small like an lcd screen i cannot remember the name, but they are not cheap this is how the projector displays the output so you can see the screen programs, this would of gone they do this, over time, this would need replacing, they are not cheap but you can replace it. its at the end of the light chamber in between the lenses. the part is called DMD
the projector flickers after 10 minutes ,it seems that the lamp ballast is failing
shows with vertical lines, it seems that the LCD panels are failing or the panels cable not be tightly plugged (panel-cable plugs into the mother board)
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I'd recommend checking the fans of the projector, and make sure that they're spinning. Since you've mentioned that the lamp blew inside the unit, bits and pieces of the lamp might have lodged itself within the fans. It might also have to do w/ the after-market replacement bulb, which I normally wouldn't recommend.
If you are handy with SMT rework it might be possible to fix this problem. The heat spreaders on the LCD drivers are insufficient to cool the chips and they will get hot enough to reflow the solder and cause a short on some of the pins. I think it most often happens after bulb replacement since bulbs near their end of life are dimmed and run cooler. After replacing the bulb the bit of extra heat is all that is needed to push them over the edge.
The problem also seems to be most prevalent on the green IC since it shares a heatsink with red and has a smaller area to dissapate the heat into.
If you pull the heatsink you will probably be able to see the short with careful inspection. The pitch is very small - 0.6mm but I was able to wick, clean, and reflow one side of my green IC and the problem went away.
I am planning on adding some additional aluminum stock to the heat spreaders with some thermal adhesive to give the chips more cooling.
By the way the very common rattle noise in these projectors is not a fan but the auto iris. You can unplug the iris servo from the mainboard and disable the auto iris in the menu to work around the problem or you can replace the iris servo for about $75, again, if you are handy with that sort of thing.
Something is catching on the fan blades. Possibly a screw or piece of plastic has come loose and is connecting with the fan blades when you switch it on. When the projector has been cool for a few hours remove the lamp and gently shake the unit to dislodge whatever is catching on the fan.