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Dark/Blurry Area on Image
When device is powered on, a dark/blurry area is seen in the middle of the projected image.
Lens is dirty
If the lens is dirty, the image may appear distorted or blurry. Cleaning the lens with alcohol may remedy this. To keep this problem from reoccurring, check the air filter as it may be the cause for the dirty lens. Be sure to keep the lens clean because a dirty lens increases the risk of burning.
Burning/meltdown of internal lens
This occurrence is easily diagnosed as it is often accompanied by the smell of burning plastic. The lens will have a distinct black melted spot. This problem is common when the device overheats. Since the burnt spot of the lens is permanent, the lens will need to be replaced to restore proper picture quality.
To replace the lens, follow the steps under the link below:
Optoma HD20 Focal Lens Replacement
Device may become very hot causing malfunctions to occur when running the device.
Fan is clogged/dirty
The most likely cause of overheating is that the fan is clogged/dirty. If this is the case opening up the device and cleaning the fan should fix this problem and cause the fan to work correctly and prevent overheating from continuing to occur.
Clogged air filter
The filter may be clogged with dirt/ dust and need to be wiped down to clean out so it filters correctly. A faulty air filter will cause dirt and other particles to build up on other parts on the inside of the device. If this is not remedied, the projector will start to overheat causing problems for the device.
To remove the air filter, follow the steps under the link below:
Optoma HD20 Air Filter Replacement
Fan is broken
If when the device is powered on and fan does not start to run it may mean the fan is broken. This problem should be checked out immediately. A broken fan will cause the device to overheat quickly and could cause lens or bulb damage to the device, which is very expensive to replace. The device will need to be taken apart and have the fan be replaced.
To remove the fan, follow the steps under the link below:
Image is Black and White/No Color Displayed
Device is projecting black and white image.
Broken Color Wheel
If the you hear a loud popping noise and then the image suddenly loses color, this is an indication that the color wheel has malfunctioned and needs replacement.
To replace the color wheel, follow the steps under the link below:
Optoma HD20 Color Wheel Replacement
No response occurs when buttons are pressed when device is on.
Buttons are stuck
If the buttons seem to be stuck it is possible that there is something preventing the button from registering. Remove the cover and check to see if there is any dirt or debris underneath the buttons.
Sometimes, the buttons might not work correctly when the console runs into an error while booting up. These types errors frequently occur when the console isn't properly started. To check for this turn off and unplug your console from the wall, then wait about 30 seconds. After the time has passed restart the system.
Bad connection between circuit board and ribbon
Remove the cover of the projector. The ribbon connects the buttons to the circuit board. If the projector was previously dropped it is possible that the connection between the ribbon and circuit board could have become dislodged. Unplug and re-plug the connector.
To reach the ribbon, the cover needs to be removed. To remove the cover, follow the steps under the link below:
Disassembling Optoma HD20 Cover
Device Won't Turn On/No image displayed
Device may not display an image when it is turned on.
The device may be incorrectly plugged in causing the image to not appear on the screen. Check the connection of the power cord with both the projector and the wall.
Burnt out light bulb
The light bulb inside the device may be burned out, resulting in no image being displayed. To remedy this a replacement bulb with housing will need to be bought and installed into the device.
To remove the light bulb, follow the steps under the link below:
After replacing my bulb my optoma hd20 won't power on. When I plug it in and turn on it flashes green light and after a bit the fan turns on. Then after another while its $@$** off; the green light goes amber and flashes, then the red light on the bulb comes on. Not sure what I did wrong.
Mike - Antwort
Same problem here. Any hints?
Francesco lariccia -
Did you solve this
Same problem here (I have a GT1080) first I thought the lamp is gone, so ordered a replacement. The replacement didnt work, so I returned it, and ordered another one from another place which also didnt work.
At this point I checked my original bulb, and sure enough, it seems ok. Filament is intact.
There seems an electrical problem which fails to power the bulb probably.
Arda Karaduman -
I have the exact same issue. Did you ever manage to fix this? I know the post is super old but I’m really confused because I replaced the bulb and it worked fine for the first week or so. Now I have the same problem as you.
Sebastian van der Ree -