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It sounds that the IIC Bus circuit shorts bey some faulty components connected to it. The troubleshooting work to this section circuit is very skilled one. If
you are not familiar with electronics, do not attempt to repair. Whether you sufferfatal electrical shock!
Instead, contact the nearest service center.
If the backlights for the screen do come on and you also have 12v and 5v feed the main board then it does sound like the mainboard will need to be replaced.
This could be a number of things. Your lamp could be bad or it needs to be reseated to the ballast. The lamp is trying to light and it will make the ballast flicker (that is the clicking sound) or your ballast is bad and it needs replaced (it will flicker and click too). Or your color wheel is broken and it will make a clicking sound when turning. If the color wheel is not spinning or broken it will not light the lamp. No lamp no picture.
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