Automatic shot down of unit but still LCD still working?

Try removing the batteries in your remote and switch it on manually. If not OK. Try unplugging it for 1 day and connect it again. That usually resets its electronics. If it fails then the power supply electronics needs repair.

Sounds like the unit is defective. Image upside down - will not stay on.

There have been known issues with the capacitors on the power supply boards of LCD, monitors, etc...going bad. (The board in the middle) Replace them all or have someone do it for you. You can use higher voltage capacitors with the same uF ratings, but you have to use 105C versions (rated temperature) in these units. Some capacitor have bulged tops or splits when they really fail. Some do not.

screen or lcd unit is not too much expensive not like lens unit and main pcb.so, its better to replace your lcd unit.,

if this is an lcd projector, you can try blowing the area out where the lcd come out of the engine, if it is only dust particles you should see results, you may have to repeat the process to get it perfect, and use de-ionized air if available, this cuts down on static. Next, if that didn't work, your polarizers are probably burnt due to repeatedly shutting the projector down incorrectly. The unit is pretty much shot at this point. the cost of repairs likely will exceed what you paid for it.

Audio IC main outputs are shot my dear friend ... if you plug your headsets this automatically disconnects your main speaks ... unit should stay on . Once you unplug headset it goes back to main automatically protection is displayed and shut unit off ... going into protection mode is just so the short in the unit won't burn out other stages of the output sector. but outputs must be replace .

The Samsung L730 is Intelligent LCD brightness,it automatically detects environmental illumination and adjusts LCD brightness for optimal image viewing. no problem it just working fine

Could be a defective controller board or unit is on its way out check the MFG date on the back if it is within 3 years call acer and get it in for service.

Check the battery contacts inside the camera and see if there getting a good connection. If there spring loaded you might have to pull up on them slightly to get a contact going for charging. Look for corrosion as well.

You might need to adjust the settings by pressing the LCD button then using the up/down/left/right arrows on the player or remote to change color or brightness. If this doesnt work, your screen might be shot. There isn't much you can do if thats the case.