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Optoma ep716 continuous loud vibration noise when turned on.

I have a Optoma ep716 and when I turn it on it makes a continuous very loud vibration noise. The logo display very nicely the picture is perfect. The noise sounds like the fan is hitting against something and causing it to vibrate. I took it apart and still could not solve the problem. It has never been drop it just started making this noise.

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The fan motor could be failing. turn it on with the top off. if one of the fans is moving slower, that'd be the one. since this is a dlp projector, the colorwheel motor berings might be on their way out as well. both need replacement.

Posted on Jul 31, 2009

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I had it on picture mute, for maybe 15 mins, which may not have been a good idea. While it was muted, it made a sparking sound, and then a very loud grinding noise. When turned off, the lound noise stops, and the fan continues as usual for about a minute. As soon as it's turned back on, the grinding noise is back. But the logo seemed to display ok.

I took it in for repairs, and they said they needed to replace the color wheel to fix the problem.

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It sounds like your module that controls the menu and the "cycling through" may not be in sync or may needs to be replaced. I had times have had to make sure the Optoma EP716 had to be first plugged in and "on" before the PC can communicate with it. Once the Optoma is "ON", then turn your PC/Notebook on. If there is no connection via USB, "S" cable and/or your VGA (be sure your PC/Notebook is set to have the external VGA "active"). Let me know if this works or not. Then we can try to move forward with other options for troubleshooting. BTW...how long have you had this multimedia and how many hours of use does it have?...JGUAM

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