Very disappointed !!!! During the first hours of use to projector, everything was perfect: strong and bright! However, after 2 hours of operation, it suddenly put flashing like a strobe preventing any use of this projector. The only possibility is to allow it to cool for ten minutes in order to then reuse it twenty minutes and rebelote strobe is back. This dysfunction having appeared more than 30 days after my purchase, I have not the ability to get a refund ... Disgusted!