My projector, the image is shaking - NEC NP15LP Projector Lamp / Bulb to fit NEC M300X Projector

1,the color starts to go out, it become the white and black ,
2,then,the projector running off after only a few minutes,
it is a general issue:the inductor need to be cleaned
Use a cotton swab moistened with alcohol to clean the inductor.
the inductor (Sensing element),is near to the Color Wheel.
the industor : is a black little element,as little as a sesame seed

any questions, feel free to ask me
have a nice day!
Jerry Lampdeng Limited

the Inductor (Sensing element),near the Color Wheel. Use a cotton swab moistened with alcohol to wipe (clean) the Inductor.

This called syncronisation. try different resolutions on pc/laptop. it looks like projector does not like source's resolution.
Check the cable, and connectios!!!

your description of the shaking still is too vague. The best idea I have for you is to replace your cables if the picture is noisy/grainy. If that doesn't fix the problem it is likely the power supply not grounded properly and possibly not enough shielding between the power supply and light engine. If your image is jumping and flickering, it is also going to be the power supply.

take the lamp out and shake the projector gently and tilt it in all directions and listen for something loose near the front of the projector. if you hear something it could be the light tunnel has collasped or the colowheel has lost its segments.

if you are refering to the image shaking, you need to replace the colorwheel. if you mean the projector physically shakes, replace the fans and/or the colorwheel. they are the only 2 moving parts in the machine.

replace the colorwheel. if the motor starts to go, the image will jump. try av solutions in ny. they're pretty good.

Judging by the mains hum noise and now shaking it sounds as if a motorized component has broken.
Humming could have been the initial jam, then shaking the damaged part attempting to rotate.
Maybe check your cooling fan blades?

More likely your settings. It maybe interlaced mode, try changing the resolution/refresh rate. there is nothing else that will cause the shaking you described.
There is another shaking that can come from the heat given off from the projector, but this sounds like a settings problem.

either the fly-eye lens or the light polarizer is fried due to excessive dust and heat. bad news: you'll have to replace the entire optical engine. worse news: infocus doesn't make them anymore. sorry.