Hello, I opened the LCD monitor to right angles

It could one of a few problems:

1. The viewfinder is pulled out and "PRIORITY" is set to "FINDER".

Push the viewfinder back in or set "PRIORITY" to "LCD".

2. The LCD monitor's brightness setting is too dark.

Adjust the brightness of the LCD monitor.

3. If the monitor is tilted upward 180 degrees, open the monitor fully.

Download the manual for more info:
JVC GR D290 Manual

Dear user ,when starting the PC again keep pressing F8 if using windows OS ,Then select the option safe mode .after getting to the desktop ,right click on the desktop the select properties and lower the screen resolution to a lower setting like 800X600 It will work

Hi, Here is the procedure on how to play the video clip on your camera. Play mode If you have turned on the camera by pressing the POWER button, you can press the PLAY MODE button once to switch to Play mode and press it again to switch to Recording mode. You can turn the power on with the play mode button. The camera is turned on in play mode. Press the play mode button again and the camera will be turned off. You can set up the PLAY mode function by using the camera buttons and LCD
monitor. Playing back a still image
1. Select the PLAY mode by pressing the play mode button.
2. The last image stored on the memory is displayed on the LCD monitor.
3. Select the recorded movie clip and press the Play & Pause button to play back.
- To pause a movie clip file while playing it back, press the play & pause button again.
- Pressing the play & pause button again will cause the movie clip file restart.
- To rewind the movie clip while it is playing, press the LEFT button. To fast forward the movie clip, press the RIGHT button.
- To stop playback of the movie clip, press the play & pause button, and then press the LEFT or RIGHT button.

When the menu is displayed on the LCD monitor, pressing the LEFT button makes the cursor shift to the left tab. When the menu is not displayed on the LCD monitor, the LEFT button operates as the FLASH ( ) button.  Selecting the flash mode 1. Select a desired Recording mode, except the [Movie] mode and the [DIS] mode. 2. Press the Flash button until the desired flash mode is displayed on the LCD monitor The flash does not fire. Select this mode when capturing images in a place or situation where flash photography is prohibited. When you capture an image in poorly lit conditions, the camera shake warning indicator ( ã ) will appear on the LCD monitor.

■ If the memory card is inserted in the camera, all the camera functions apply only
to the memory card.
■ If the memory card is not inserted in the camera, all the camera functions apply
only to the internal memory.
■ If you have turned on the camera by pressing the POWER button, you can press
the PLAY MODE button once to switch to Play mode and press it again to switch
to Recording mode.
■ You can turn the power on with the play mode button. The camera is turned on in
play mode. Press the play mode button again and the camera will be turned off.
■ You can set up the PLAY mode function by using the camera buttons and LCD
monitor.
2. The last image stored on the memory is
displayed on the LCD monitor.
● Playing back a still image
1. Select the PLAY mode by pressing the
play mode button ( ).
100-0007
3. Select an image that you want to play back
by pressing the LEFT / RIGHT button.
※ Press and hold the Left or Right button to
fast forward the images played.

AND here is the manual in free downloadable form

http://www.fixyourownprinter.com/forums/inkjet/24191

Check this link.

well perhaps you forgot to switch it to the playback mode (red switch on the power ) in the record mode you have to choose between lcd and viewfinder . further more it is possible to switch the display off .

the camera needs enough power i reccommend 2500 NIMH
accu's

the spring tention of the switch is bad so u need to replaced...

Do the flashlight test. Shine flashlight on front of screen at angle and see if you can see an image or lettering. If so, it is probably inverter board. Let me know first if you have an image.

the flex wire of the lcd monitor is have a open line that why it is not functioning....there is also a switch to on the viewfinder connected to lcd....in some model even the lcd is damage you can still use the viewfinder...