Hello Guys, i have managed to find a permanently solution on the problems of the UST xiaomi mijia 4K projector after 1 month of investigating on a defective one (i am projector technician,also i have my own blog and make repair & review articles).
The problems that appears to this model on this specific malfunction are
-does not boot or late on boot
-dots on the screen
-half screen vertical white lines
I am going to make a full repair article with photos and full descriptions the next days to my blog, unfortunately i can not post the article and the link of my blog because is against the forum rules (i post a screen review i made few days ago and the moderator delete the link of my review and close the thread), but i will try to post here too some photos and the instructions of the repair.
The problem is a defective and poor quality part on the optical block. It has to be change. There is no problem on the flat cable or something like that i have read in a lot of posts. The flat cable is absolutely fine.
The challenge was to find that part. After a lot of search i realize that this projector does not have any kind of support on parts like the most brands and on the other hand, if i find it, the new part is going to brake after a few hundred of hours again, as it is probably have been made by the same poor material. So i decide to design end make my own. It tooks me a lot of tries to find the right material (a material to have a great durability on the heat) and i create it on a laser CNC. I have made and some improvements on the design that had to be there in first place but is was not.
When this part is been replaced, all the problems will be gone and the projector will never suffer again by these ever again in the future (the build of the rest projector it seems very solid).
Wow I’m interested in your solution, please can you private message me a link to your blog as I’d love to read it
good effort by the way finding a solution