No Picture from one or all inputs (OSD and Sound OK)
Note: Slow leakage from the
panel causes “no raster and
buzz noise”
<Symptom>
No Picture from one or all inputs (Sound OK)
<How to determine the defective board>
<Models>
All models
Yes
No
Yes
A (1)or
D (2) Board
Is there no
picture from all
inputs?
Disconnect
CN A5, Turn the unit on.
Does a white picture
appears? (*)
No
Yes
D Board
Panel discharge
occurs?
No
Yes
SU Board
Disconnect
the SU Board from the
SC board. Turn the unit on. Is
there a picture at the
lower half of the
screen?
No
Yes
SD Board
Connect the
SU board. Disconnect
the SD Board from the SC board.
Turn the unit on. Is there a
picture at the upper half
of the screen?.
SC or
D Board
and possibly
Panel.
Warning: Disconnect AC Power prior to
making any disconnection or
connection.
23
No
A Board
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