Projector: amzn.to/2sSyqLK
Fans: amzn.to/2sT97ct
Mounting bracket: amzn.to/2tpDLaE
Today I'd like to show you how I turn a cheap LED projector into a very good home cinema projector. For this I use the Excelvan CL720D for about $150. It has all kinds of connections, but I really only need the HDMI port because I'll be connecting the projector to my computer to play movies mostly. I will not be using the analog inputs and USB connections as well as the built-in speakers. The Keystone lever is a mechanical trapezoidal adjustment of the image. However, the image becomes blurry both at the top and at the bottom, as the lens is no longer able to focus the image evenly. Therefore I will not use the mechanical keystone. This is not a problem because I will place the projector in front of the screen in the middle. The projector has a nice bright picture and the 720p resolution works well for me at the moment. The picture is excellent for the price. The most important thing for a home cinema projector is of course having a silent fan. I will measure the noise 3 feet away from the projector. It is 38 dB. Or of course that's too high. I will replace the low cost built-in fans with better quality computer fans. To do this, I turn the device around and take out all the Philips screws to open the case. Be careful when removing the cover because the control board is connected to the board by a cable. Here you can see how the image is directed through the mirror to the lens and then to the wall. Behind the mirror is a radial space that transmits air to the LCD panel to cool it. In front of the panel you can see the aberration lens, which I think is useless. The air then continues to enter the rear housing and is pushed out by a second fan. Here I have cut the plastic strips for the housing to have as little air resistance as possible. This helps a little, but it's still too high. So both fans are replaced and I'll start with the radial fan. To do this, I remove part of the housing to access the screw. Then it is easy to take it out. I will replace it with a BeQuiet 80mm fan. It is important that the fan is inserted correctly so that it pushes air in and not out. The arrows on the propeller help. Since the new propeller is axial rather than radial, I have to change the structure a bit. I just use cardboard and double-sided tape. I form a funnel out of cardboard, so that the new fan can get air well into the corner and behind the hole. I cut the old fan cable so I could connect the new fan. The new fan has a third cable to control the temperature, this cable is not connected. Now the second fan has been replaced. Here I need a 92mm fan. So far I've had good results with BeQuiet's Pure Wings. Here I also remove part of the case, so the fan cover can be easily removed. It is important that the new fan is the same size as the old one, so that it fits perfectly. Here also the direction of air flow should be checked during installation. Metal cooling ribs ensure cooling of the LED chip. To test, I turn on the projector and check the functionality of the two new fans. Both fans work well. Now everything can be reassembled and the case closed again. There will be another video soon on how to install the projector stand. At a distance of 3 feet, the noise test now shows only 18 dB, which is really nice and quiet. The fan conversion of about 20 euros was worth it. With the new bracket, the projector is placed centrally in front of the screen and a keystone is not required. I spent about $200 on this setup. I am very satisfied with the result and I hope this video will help as many viewers as possible save money. Please give me a like and share this video if you like it..
Негізгі бет HOW TO CONVERT CHEAP LED PROJECTOR INTO SILENT HOME CINEMA PROJECTOR | EXCELVAN CL720D CONVERTIBLE
No video
Пікірлер: 334