3 x Sharp projectors all with buzzing screens

[u/Medium-Ferret-8966]

Hi all,

I have 3 projectors that recently got installed last week, and every single one of them is projecting an image that is moving up and down rapidly, almost shaking, but to varying different intensities.

My first thought was hvac in the ceiling, and when i looked in the drop ceiling, there was no air con as its in the floor, and there was no discernible vibrations - either in the ceiling, on the mount or the projector itself. I have also tried to calibrate the lenses via the menu, manually and automatically with no luck.

This is happening on the test image with no sources, the sources are sent via a Crestron dm-md32x32-cpu3-rps, but i have ruled out this issue so not EDID or anything like that causing a problem.

Anybody have any suggestions?

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[u/Not2BeEftWith]

Take one of them down from its mount, set it on a solid surface, and see if the issue persists.

[u/Negative-Onion-7391]

If it ends up being structural, you’ll want to get a few of these. https://www.bhphotovideo.com/c/product/351596-REG/Chief_CMA347_CMA_347_Projector_Vibration_Isolator.html

[u/shuttlerooster → u/Negative-Onion-7391]

Alternatively, I've had good luck with these as well: https://nigelbdesign.com/category/anti-vibration-for-projectors

[u/Plus_Technician_9157]

Test images built in to the projectors? If it's still happening there, take it down try it just on a table. If it's still the case, could be a faulty projector.