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Anyone in the Dallas/Fort Worth area interested in the black 4k model, I have 2 brand new. COVID put my home project on hold and $ has gotten tight this year.
 

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Does anyone can share sdr and hdr settings used with clr screen ?
I have gathered some settings in different forums and on some websites. With the new ProjecTivy Tools from XDA they are quite handy to use. PM me, i will send you a google docs link.
 

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The Xiaomi is a great device (after having it fixed with the plate from [email protected]). With the latest ProjecTivy Tools from XDA you can setup different display profiles for HDR/SDR wich is a another great improvement.

The only thing which is bugging me is the coil whine. Interestingly the whine is almost not existent in 3D-Mode. In 2D-Mode its much louder when the light mode is set to "Movie" as opposed to "Hightlight" mode.

So i tried a solution with a modified Ikea tv bank as an encasement (see pictures attached). The solution is effectively eliminating the coil whine. But now i run into heat problems. I tried adding some usb powered pc fans, but after one hour in "Movie"-Mode i get a heat warning from the projector.

IMG_20201207_081745.jpg IMG_20201207_081738.jpg

I think the biggest problem is the heat sink (see attached picture). Measured with a heat gun it is getting to ~55 degrees Celsius in Movie-Mode and up to 66 degrees Celsius in Hightlight-Mode. The other side of the UST where the two fans reside is only getting to ~22 degrees Celsius.

Heat Sink.jpg

The thing with the coil whine is, it is originating from the side with the heat sink. So to block it of i have to enclose it but then i am running into heat problems. At the moment i am out of ideas regarding the coil whine.

Has anybody found a better solution regarding to the coil whine issue?
 

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I just got the fengmi 4k version and it is very loud, like you observed, its fine in 3D mode, so i think it has something to do with the refresh rate causing the noise. Is there a way to change the rate , or i need a cabinet option with cooling fans
 

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Has anyone tried a Vevor screen with the 1s? They are inexpensive white matt and framed. I am wondering how it handles ambient light and the viewing angle in the vertical. I intent to project at a level higher than eyesight (around 150 cm off the ground) and I am trying to understand if by looking 20 - 40 degrees up I will lose significantly with a white or grey screen.
 

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The Xiaomi is a great device (after having it fixed with the plate from [email protected]). With the latest ProjecTivy Tools from XDA you can setup different display profiles for HDR/SDR wich is a another great improvement.

The only thing which is bugging me is the coil whine. Interestingly the whine is almost not existent in 3D-Mode. In 2D-Mode its much louder when the light mode is set to "Movie" as opposed to "Hightlight" mode.

So i tried a solution with a modified Ikea tv bank as an encasement (see pictures attached). The solution is effectively eliminating the coil whine. But now i run into heat problems. I tried adding some usb powered pc fans, but after one hour in "Movie"-Mode i get a heat warning from the projector.

View attachment 3075759 View attachment 3075760

I think the biggest problem is the heat sink (see attached picture). Measured with a heat gun it is getting to ~55 degrees Celsius in Movie-Mode and up to 66 degrees Celsius in Hightlight-Mode. The other side of the UST where the two fans reside is only getting to ~22 degrees Celsius.

View attachment 3075758

The thing with the coil whine is, it is originating from the side with the heat sink. So to block it of i have to enclose it but then i am running into heat problems. At the moment i am out of ideas regarding the coil whine.

Has anybody found a better solution regarding to the coil whine issue?
Hi i have the same projector you will not solve a coil whine issue because the power supply is not the problem , it is the normal sound of the color wheels spinning at 5000 rpm \high frequency noise made by the motor that drives them , with your cooling issue the color wheels and laser temps are monitored at multiple points with TCs and fans will ramp up according to the temps measured .a mod that could be attempted would be water cooling but this is a complex piece of tech and dissipating the heat away would be complicated .
 

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For those of you who have tried both 3D and 4K/UHD blueray discs with this PJ - what do you prefer ? Planning to get 3D/UHD discs on rental from 3D-Blueray, wondering which version to order. I've been mostly watching UHD on PJ till now. Bought the 3D lens to try the 3D on the PJ as well.
 

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Hi

I have wemax a300 and 5.2 audio system
I have problem where to place my centre speaker. My shelf is wide enough to have tge speaker righ in front of the projector but I was concerned if the speaker will have negative effects on the projector.
Please let me know your opinion.
 

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Hi

I have wemax a300 and 5.2 audio system
I have problem where to place my centre speaker. My shelf is wide enough to have tge speaker righ in front of the projector but I was concerned if the speaker will have negative effects on the projector.
Please let me know your opinion.
I've the center speaker infront of the PJ. No problems.
 

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I’m looking at the 1S and I’m wondering if these are able to be powered off/on with an outlet that switches off and on? I have a spinal cord injury and my fingers don’t work, so I can’t use remotes. I use IP/touch control for everything, so the only way I can figure to turn it off and on is if you can use a switched outlet..
 

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I’m looking at the 1S and I’m wondering if these are able to be powered off/on with an outlet that switches off and on?
No. It has to be powered on by the remote. If one was to lose the remote, they will have a very expensive paperweight. I have not seen any replacements for the included remote. You can control the projector with the MiHome app AFTER its powered on.
 

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No. It has to be powered on by the remote. If one was to lose the remote, they will have a very expensive paperweight. I have not seen any replacements for the included remote. You can control the projector with the MiHome app AFTER its powered on.
You can turn on by unplugging from the wall and plug it right back....you can do that using a smart plug I guess.
 

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These lines have become a real issue.

Do you have the lines in the MI Menu (with all the Chinese apps)?

Sent from my GM1917 using Tapatalk
Replace this metal plate will solve the problem on Vertical lines and Snow white dots.
www.projectordoctor.sg (Singapore) Xiaomi 4k Projector Repair Specialist.jpeg
 

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