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Hello my name is***** do not rate until we are finished. I look forward to assisting and am very sorry to hear that you are having this problem. How old is it? Have you changed anything else?
There are a few parts that can cause this. The DMD board is the most common, the color wheel can as well if it is not spinning and then so can the lamp or a loose connection from one board to another. When you turn it on do you hear the wheel start to spin?
You may have to listen close it is similar to the fan whir but tends to have a high pitched sound as well.
Take all the time you need. It is also possible the new DMD board is defective. I would re-seat all the connections and clean the entire inside of the set (including the connection pins) with canned air duster.
Ok what about the cleaning did you do that?
Ok let me know the results when you can.
The high pitch is the color wheel the fan makes a whir sound.
That sounds like you got a defective DMD board. Can you contact the seller to get a replacement sending this one back? This question does not expire. You can come back to me any time by going to justanswer.com and looking under my questions.
No it should control the fan, from what you described it sounds like the DMD board fan is the noise coupled with the picture change it would normally be the board. To find out if it is that board, repeat the cleaning/reconnecting but only on this board and only on it's side of the cables. If the same thing happens and it works for 10 minutes the new board is most likely defective or one of the cables is bad.
No if it is a bearing it would be in the fan but the fan would still spin, if you listen close when the sound comes on you should be able to hear where it is coming from.