Question about Hitachi Televison & Video
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Posted on Jan 02, 2017
SOURCE: Toshiba 47" 1080P LCD 47HL167
Ok I have included some information that could be VERY helpful and given the correct credit to the original author. If you find this useful don't forget to rate the thread. Thank you.
SERVICE MODE WARNING:
Without proper documentation Don't mess around with the service mode adjustments unless you know what you're doing and have the service manual to guide you.
Once you enter service mode the first thing you should do is record all the original values BEFORE you change anything! - This is the only way to restore the television to its original (factory default) state should it become necessary to do so.
Then, bring up the cross-hatch pattern by repeated pressing of the TV/VIDEO button. You can then use the volume Up/Down buttons to change the PARA settings, this should cause the grid to bow in (concave) and out (convex). Adjust until the grid is the most linear.
The numbers 1,2,3,4,5,6 jump to different items. 9 displays SELF CHECK
The number 7 displays a grid. There's a blinking cursor in the upper left corner. The numbers 2,4,6,8 move the cursor. 3 cycles the colors (RGB), 5 stops the cursor from blinking, then when you push 2,4,6,8, you are adjusting the convergence at that point for the selected color. Pushing 7 again gives you a "warped" grid for a few moments. Pushing 7 again removes the grid from the screen.
If you're attempting to adjust color or geometry errors, you'll need the Video Essentials DVD, Laser Disc or some other source of test material.
Original Text from: Setting Your Monitor to NTSC Specifications by Anthony W Haukap
Posted on May 08, 2008
I am not sure...but I have the identical problem. I believe the vertical lines are caused by the inverter board and the darkness is caused by the one of the back lights that needs to be replaced. I am tearing my unit apart now and will find out.
Posted on Aug 09, 2010
Change input device to some other like a DVD player and see. Look for loose contacts in RC jack, cable and socket.
Switch off TV, switch off power, remove plug and wait for 48 hours and retry.
If problem persists, call in a qualified service technician.
Posted on Aug 07, 2012
If it is an LED LCD TV, the backlight inverter board should be troubleshooted. Contact any service technician.
Posted on Jan 09, 2014
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