Chroma - high pitched noise

Dear Vava Team,

i was one of your fist backers and received my Chroma beginning of last year. Unfortunately it had a serious problem: The higher the brightness was set the louder we had to endure a screaching sound. Watching anything on the otherwise great unit was not possible. It took me 10 months!!! of discussion and >20 mails to receive a replacement unit.

The new unit unfortunately has the same problem as well. The high pitched noise is not depending on the brightness level but as soon as the light source starts there is a loud noise in a very high frequency that is louder than the fan noise and as with the old unit it is not possible to enjoy any movie on this projector. I checked different Chromas in stores and these units did not make this sound (only the fan noise which is in much lower frequencies and for me no problem at all).

Since i am waiting now for almost a year (after payment): Please send me a working unit!!!

@ Other Chroma users: Anybody else who is facing this issue? Any idea how to solve?

BR
Patrick