The lamp is working but we keep getting these verticle line on the screet.
I just fixed mine at no cost! This problem is definitely with the DMD chip, but it may not need to be replaced. Try this first: 1. Carefully remove the lamp. 2. Remove the three screws from the bottom and the 3 black screws from in front of the housing near the lamp vents. 3. carefully remove the cover and using a spudger lift up on the black clamp lever holding I the ribbon cable to the system board. Set aside the cover. 4. When looking at the projector from the top with the lens facing away from you. The DMR chip board attaches to the main board on the left hand side of the main board just behind the lens. 5. If you press gently on the card edge connection on then main board for the DMR chip board, you may notice some slight movement. 6. Gently tighten the screw that holds down main board nearest the lens and closest to the DMR chip card edge connection. (I tighten all the screws holding in the main board as some of the them were quite loose from years of use.) 7. Put it all back together... When replacing the ribbon cable be careful not to jam it into the slot. Make sure the black clamp is up, and gently slide it in until it clicks a little. Put down the clamp. 8. Once all is back together... try it out. This fixed mine. No more black and white lines. I use my projector for outdoor movie nights mostly and my thought is that the DMR chip board became loose and some corrosion from the moist night air caused a bad connection on one of the card edge traces. Either the action of moving the card edge removed some of the corrosion and made a better connection, or the tightening of the screw caused a better connection. I hope you have the success I did.
SOURCE: I have a Optoma EP721. It now projects verticle
Hi,
It sounds like you have a projector which is in need of professional repair. You should eliminate source material problems first though by checking the projector with alternative input sources, ensuring that you also check the cables, and various inputs on the projector.
If the lines are present on all the inputs then the fault is internal to the projector. This will require professional repair. The first point of contact should be Optoma at www.optoma.co.uk/support.aspx (UK) or http://www.optomausa.com/ (USA). They should be able to give you an idea of ow much it may potentially cost to have your projector repaired and (most importantly) check whether it is under warranty. Most Optoma projectors ship with 3 year warranties these days.
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