I have an NEC MT1065. Recently, the image has begun to "flicker" or "shake." The menus appear perfectly fine, just the input produces a shaking image. Pressing auto adjust when on the VGA input gets rid of the flicker, however faint white horizontal lines appear on the image. When I press auto adjust on the RCA input, an error message reading "function not available" appears. I don't have the correct cables to test the S-Video or BNC inputs. I have taken the projector apart and cleaned all the circuitry which did not correct the issue. I do not suspect the lamp as the menus appear as normal. I suspect the video board is the cause of the problem. Does anyone have any other suggestions as to what the problem may be or how to correct it?
SOURCE: Svideo and component video inputs
Hi,
Normally in most laptops, you need to press a combination of keys to activate the external video outputs (such as your S-Video and/or the analog/vga/composite. It would be Fn + F? depending on the brand/model.
In desktop PCs, you need to activate the second monitor or TV out in your Display properties.
In your NEC VT575, you need to select the source manually if the auto source detect does not work.
In some cases, the PC's output whether S-Video or Composite would be detected by a projector but would still fail to display on the projector's screen. The reason is the PC's Screen resolution is higher than what the projector can handle. You need to lower the said Screen resolution in the PC's Desktop Properties/Settings. The NEC VT575 can handle max 1024 X 768 but would suggest you try lower settings first in your PC and gradually work the resolution upwards till it blanks out.
In some instances, the projector simply fails to detect incoming video signals and the only solution is to wait till autodetected. At times it is really a projector's fault. it may be necessary to send the unit in for service/upgrade of firmware or hardware fault diagnosis/repairs.
Hope this be of some help/idea. Pls post back how things turned out or should you need additional information. It would be of help if you can likewise post brand/models of the PCs that would be used.
Good luck and kind regards.
SOURCE: Strange shadows on NEC MT1030+ projector image
I dont know if this helps but I have of few of these at my company and when I had the repair people out they said it was a bad prism. If anyone can repair these and whats to buy them cheap let me know. [email protected]
SOURCE: My NEC projector MT1065 display
It sounds like the polarizer filters are starting to ware due to heat build up, if you remove the lid and the main booard, there is a white plastic mesh cover over the lcd panels, you can remove this and adjust the polarizers for the red, green and blue lcds to adjust the black level, there are 3 hex bolts holding a plastic frames which in turn hold the pre polarizer filters, buy slightly loosening the bolt you can slide the plastic frames left or right to adjust the levels, buy you should mark the position before you start. this may not solve the problem but may help to improve it, unfortunately these projectors require special software to make electrical adjustments which is hard to get hold of.
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