Suddenly stand by

In short; you have replace everything except its display panel and speaker. Replace them too.

Have you tried any of the reset commands?
Try these....please let me know the result:

Method 1
1. Unit power must be ON and unit must be in STOP mode.
2. Press and hold [CH UP] and [CH DOWN] ON THE UNIT for over five seconds. The unit will turn off.
3. Press [DVD POWER] to turn the unit on.

Method 2
1. Press [STOP, TUNE MODE] on the main unit and [>10] on the remote control at the same time for about 3 seconds until the message "Initialized" disappears from the television screen.
2. Turn the unit off and on again.

Method 3
While the unit is off, press and hold [VOLUME +], [OPEN/CLOSE] and [POWER] on the main unit at the same time for more than 5 seconds.

Method 4
While the main unit is on, press [POWER] on the main unit for more than 4 sec. (All the indicators will blink twice when the main unit is reset.)

Another possibility is to unplug the power cord......wait 30 minutes and plug it back in, possibly repeating the steps above. (Method 1 should reset the unit but maybe trying each of them may be necessary until it is reset.

The message appears to be one that displays when the unit is in a setup mode.

Thank you for your reply.

Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
https://homenol.blogspot.com/
https://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, [Exclude the model number] in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

1) Can be dust do a good clean
2)Check for the fuse and change it if needed.
3) Capacitor needs to be changed, you'll have to findout which one.

Hope it helps, good luck

Thats great, Please rate solution.

you can try resetting the tv by
1. unplugging it
2. pressing channel down and volume up buttons at the same time while plugging tv back in
3. if you here a click, the tv has been reset

try pressing and holding the enter button on the projector for about 30 seconds - this resets it. It worked for me!!

How many times does it blink. It should be blinking a repeating code if its in protective shutdown mode. A continuos blinking with no pauses means.
No reply from the jungle IC(data bus is busy, shorted to ground or held
high), IK video path is defective.