Can not see image though lcd monitor, cann't record

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

If word is not there look for works which is similar.

A stuck shutter is another common failure mode for digital cameras. The symptoms of a stuck or "sticky" shutter are very similar to CCD image sensor failure. The camera may take black pictures (for shutter stuck closed), or the pictures may be very bright and overexposed, sometimes with lines, especially when taken outdoors (for shutter stuck open). To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.

Look in the view finder when recording instead of the screen. if you see the image there then the unit is probably set to look through there. Many of the new units dont' have a full view finder to lens item they actually have a small lcd screen inside the view finder. Check your options for recording.

Also if the view finder is tilted you need to close that before usign the lcd.

The image will not appear simultaneously on the LCD

monitor and the viewfinder. It will appear in the

viewfinder when the LCD monitor is in the lock position,

and it will appear on the LCD monitor when fully
extended.

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.

Assume you have Sony DCR-HC20 camcorder and it does not show you live view to record, I hope camcorder is playing back old recorded tapes perfectly with good quality picture on its LCD.
If it is true then your camcorder has ccd imager chip failure and ccd imager needs to be replace to get live view in LCD monitor.
Qualified camera tech will replace ccd imager chip.
Thanks.

You have a defective CCD imager - the part of the lens that receives the image. Will need to be replaced.

Try pressing Fn + F8 keys to toggle the screen image.

PLease see http://www.fixya.com/support/t131881-sony_cam_recorder_wont_record for more information on this i have had the same problem, faulty CCD image processor chip.

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...