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7.Abnormal Phenomena:
7.1 VIF board:
a. colour absence or colour step not good.
b. No sound from the speakers,but there was noise output.
c. Power supply is normal,there were OSD and backgroud light on the
panel,but not picture.
d. Can not turn on the set(LEDs do not work ).
e. There are some strip disturbance in the picture.
f. Turn off automatically after the set works a few minutes.
g. Picture wobbles when input 1080i signal.
7.2 DIF board
a. picture abnormal.
b. Can not turn on the set(LEDs do not work ).
7.3 Power Supply:
a. no picture output.
b. Output voltage abnormal
7.4 X scan sustainer:
h. no picture.
i. Colour of the picture is not enough.
j. Picture abnormal such as picture flicker
k. Can not turn on the set(LEDs do not work )
7.5.Y Bulk Sustainer:
a. Can not turn on the set. If disconnect the cable from power supply to Y
sustainer the set works,but the picture is dark. It means that Y sustainer is
abnormal.
b. Power output voltage is normal,but the picture is dark.
c. When the set works normally,the temperature of the compoenents on the
sustainer boards is about 55.If the temperature is over 55 ℃ there may
be some fault on there.
7.6 Audio Amplifier Board:
a. there is no sound or noise in the speakers.
b. Too much noise in the speakers.
c. Can not switch inner and outer speakers.
7.7 X Connecting Board(upper and lower parts)
7.8 Y Connecting Board(upper and lower parts)
black
bright
bright
13
bright
bright
dark
Abnormal Phenomena
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