Unresolved Optical Defect And Warranty Failure On Viewsonic PX749-4K

I am writing to report a serious and unresolved optical defect with my ViewSonic PX749-4K projector, purchased from Hepsiburada in Istanbul, Türkiye, from the seller Proof Teknoloji. Since early September, the projector has been suffering from a major image quality problem that cannot be explained b...






























