How to Fix Dead Pixels on a JVC GY-HM790U

Turn the camera on to warm up for at least 40 minutes before performing these steps. The camera MUST be warm.

Make sure that your viewfinder is looking at the ‘VF’ (viewfinder) input.

  1. Press and hold the MENU button on the viewfinder until the menu comes up.
  2. Use the thumb wheel on the viewfinder to select ‘VIDEO FORMAT’ then ‘INPUT SOURCE’ then ‘VF’ and press the thumb wheel to select ‘VF’ (View Finder).
  3. Press the viewfinder’s MENU button to exit the menu.

You need to be in the 1280×720 60p(SP) mode to get to the Pixel Compensation function.

  1. Press the MENU button on the left side of the camera body (adjacent to the navigation wheel). A menu should show up on the viewfinder that lists ‘RECORD SET’ as the top item.
  2. Press the right arrow to go to ‘RECORD FORMAT’.
  3. Press down arrow to go to highlight ‘CAMERA RESOLUTION’.
  4. Press the center button of the navigation wheel to get record format choices.
  5. Press down arrow to ‘1280×720’ and push center button to select.
  6. Press down arrow to highlight ‘FRAME & BIT RATE’, and press center button to select.
  7. Press down arrow to ‘60p(SP)’ and press center button to select.
  8. Press down arrow to ‘SET’ and press center button to select. You may see ‘VIDEO FORMAT ERROR’ in the view finder which is normal.
  9. Turn the camera power switch OFF for a few seconds and then turn it back ON.

Now you will need to reset the viewfinder to 720p if it was not already in the 720p format.

  1. When the viewfinder comes back on it may say ‘VIDEO FORMAT ERROR’.
  2. Press and hold down the viewfinder’s MENU button until the menu comes up on the viewfinder.
  3. Scroll the viewfinder’s thumb wheel down to ‘VIDEO FORMAT’ and press the thumb wheel to select it.
  4. Select ‘FORMAT’ by pressing the thumb wheel.
  5. Use the thumb wheel to highlight ‘720p’ and press the thumb wheel to select it. You should now see the camera video on the viewfinder with the menu superimposed.
  6. Press the viewfinder MENU button to get out of the menu.
  7. Turn the camera power switch to OFF.

From here you are ready to access the Pixel Compensation function by the following steps.

  1. Press and hold down the DISPLAY button (which is located on the left side of the camera body just to the right of the Ch. 1 and Ch. 2 Monitor Select Switch.) and then switch the camera power switch back ON. When the camera is on you should see the viewfinder come on. Release the DISPLAY
  2. Find the FOCUS ASSIST button located on the left side of the camera body close to where the front of the handle attaches to the top of the camera (not the FOCUS ASSIST button on top of the handle). Press and hold down the FOCUS ASSIST button and then immediately press the MENU button (adjacent to the navigation wheel) and you should see ADVANCED MENU come up on the viewfinder.
  3. Press the down arrow button to highlight ‘ADVANCED FUNCTION’ and press the center button of the navigation wheel to select.
  4. Press the down arrow button to highlight ‘PIXEL COMPEN DET’ and press the center button of the navigation wheel to select.
  5. Use the down arrow button to get ‘EXECUTE’ to come up on the viewfinder.
  6. Press the center button to select ‘EXECUTE’ and PIXEL COMPEN EXECUTING should appear.
  7. When the compensation is finished you will get a prompt to turn the camera OFF and then ON. The bad pixels should be hidden now.

Now you will need to go back in the menus to return you camera to the RECORD FORMAT that you shoot in by repeating steps 4-12, and to return the viewfinder to the correct VIDEO FORMAT by repeating steps 13-19.

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Timtech

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