No startup When i push the powerbutton the led goes green for a very short while - then it goes orange. If i try to start with the remote controll it goes green/orange and then back to orange.

If you purchase additional transmitters, the garage door
opener must be programmed to accept the new remote
code.
Program the Receiver to Match Additional Transmitter
Codes:
Using the orange "LEARN" Button:
1. Press and hold down the transmitter button you wish to
program to the opener. The orange LED will flash to
indiciate it is receiving signal from the transmitter.
2. Press and release the "LRN" button.
3. The sourtesy LEDs will flash once.
Ensure the door is clear of obstruction, then test the
transmitter.
Using the Motion Detecting Control Panel
(optional accessory):
1. Press and hold the button on the hand-held remote that
you wish to operate your garage door (1).
2. While holding the remote button, press and hold the
LIGHT button on the Motion Detecting Control Panel (2).
3. Continue holding both buttons while you press the push
bar on the Motion Detecting Control Panel (all three
buttons are held) (3).
4. Release buttons when the opener light flashes. It has
learned the code. If the light bulb is not installed, two
clicks will be heard (4).
Now the opener will operate when the transmitter push
button is pressed. If you release the transmitter push button
before the opener light flashes, the opener has not learned
the code.
To Erase all Transmitter Codes:
To deactivate any unwanted remote, first erase all codes:
Press and hold the orange "learn" button on opener until
the learn indicator light goes out (approximately 6 seconds).
All previous codes are now erased. Reprogram each remote or keyless entry you wish to learn.
http://gomerlin.co.nz/getattachment/2949a1dd-74ab-4576-850d-4f40de28fbe3/mt60p-installation-guide part 27 from installation manual page 15

you need a new board

i have the exact same error with same projector. did you manage to solve this?

my status led blinked red 6 times indicating a "lamp error" which wasn't helpful. i also tried removing and replacing lamp but didn't work.

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
https://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary. /

when it power on, your monitor power led turn to green or orange? if its turn to orange, your video card migth be the problem..

Most likely fix is to reset the SMC.
Turn the power off, remove all peripheral cables, connect the AC power supply. Using the left-side keys, press the combination Shift-Control-Option-powerbutton ONCE. The LED on the MagSafe connector
should go off, go back to green when keys are released, and may change to orange if the battery still needs some charge. Wait five seconds, then press the power button to restart the computer.

do this to reset your printer:

1. With the printer plugged in and powered off, press and hold the Resume/Cancel button, then press and hold the Power button. Do not release the buttons. The LED light should be green to indicate that a function is selectable
2. While holding the Power button, release the Resume/Cancel button, do not release the Power button
3. While holding the Power button, press the Resume/Cancel button 2 times, and then release both the Power and Resume/Cancel buttons. Each time the Resume/Cancel button is pressed, the LED lights alternately in orange and green, starting with orange.
4. When the LED light is green, press the Resume/Cancel button 4 times. Each time the Resume/Cancel button is pressed, the LED lights alternately in orange and green, starting with orange.
5. Press the Power button. The LED lights in green, and the reset is performed. When the operation completes, the printer returns to the menu selection mode automatically
6. Press the power button to exit service mode.

yes but you have to open the tv

I had a similar problem with my HANNSLounge 32", the screen switched on with green light but none of the front panel buttons worked (screen is black apart from showing the input source in the top left).
After powering off numerous times I tried starting up with a blank SD card in the reader and the tv cycled between red green and blue screens and then reset itself. (Some sort of firmware restore?) After which point I had a working screen again! (Will have to see how long it lasts for!)

try resodering the connections on the flyback. Its fairly comon for that model to have hairline cracks at the solder joints which will cause the symptoms youre describeing.