Sounds like main system control memory IC fault. Contact any service technician. http://electronicshelponline.blogspot.com/
The List & Labels part of the setup lets you edit your channel list and choose or create a
personal six-character label for each channel.
Note: Changing List and Labels can be time consuming. You can change these at a later time by accessing the
Setup menu.
1. Press the left or right arrow to scroll through the available channels and choose the
channel you want to edit.
2. Press the down arrow to highlight the In channel list option. Press the left or right arrow
button to add (the box is checked) or remove (the box is unchecked) the channel from the
list.
3. Press the down arrow to highlight the Channel label option. Press the left or right arrow
button to scroll through the available list of 25 most common labels. The last option in
the list allows you to create your own six-character label for the channel (the first letter of
the label is highlighted).
4. Press the 1 or 2 number button to change the first letter of the label.
5. Press the right arrow to highlight the second letter, then press the 1 or 2 number button
to change the second letter, etc...
6. When you are finished creating your label, press OK. For model D34W20, your TV tunes to
the last channel available in your channel list. For models D40W20 and D52W20 only, the
Auto Convergence menu appears next.
Auto Convergence (for models D40W20 and D52W20 only)
Your TV's picture tubes might have been disturbed during delivery or after you moved the TV,
causing the color in your TV to be out of alignment. The colors adjust by starting auto
convergence.
1. Press OK to begin auto convergence.
2. When the auto convergence is complete, the Red center convergence menu appears. The
cross in the middle of the screen should be yellow. If it is not, use the arrow buttons to
move the red cross to overlap the green cross. Press OK when adjustments are complete.
3. The Blue center convergence menu appears with a cyan cross in the middle of the screen. If
it is not, use the arrow buttons to move the blue cross to overlap the green cross. Press OK
(the TV tunes to the last available channel in the channel list).
Ok
1.1 Press MENU to access MAIN MENU screen,
then press CH UP (8) or DOWN (9) to
move the " " mark to "SET UP".
1.2 Press VOL (+) or (-) to access SET UP
mode, then press CH UP (8) or DOWN (9)
to move the " " mark to "CH SETTING".
1.3 Press VOL (+) or (-) to access CH
SETTING screen.
1.4 Press CH UP (8) or DOWN (9) to move
the " " mark to "CH SEARCH", then press
VOL (+) or (-) to access CH SEARCH
mode.
START
2.1 Press VOL (+). The tuner will search
through all available channels in your area
and add them into the TV's memory.
STOP
2.2 Press VOL (-). CH SEARCH will stop at
the current channel and will not add any
higher channels.
2.3 Press MENU to exit.
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