LG 32FS2RMB/RNB Service Manual page 16

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Check/Replace
FR901, R405.
Check/Replace
CPT.
Check the waveform
at pin 62, 63, 64 of IC501.
YES
Check/Replace
Q503, Q504, Q505,
Q1904, Q1902, Q1907.
Check/Replace
YES
Check the waveform at
PIN 38, 41, 46 of IC501.
YES
Check/Replace Check/Replace
IC401, FL201, 202, 203.
Check if heater element is lighting.
Check the heater voltage.
Increase the screen
voltage of FBT.
Retrace line is
visible.
Check the waveform
at pin 11 of IC900.
NO
Check the waveform
at pin 1, 3, 5 of IC900.
(RGB out)
NO
Check the waveform
Check/Replace
at pin 20, 21, 22
IC900, R402, D401.
of IC501.
YES
NO
Check the waveform
at pin 2, 140, 143 of IC101.
IC501.
NO YES
Check/Replace
IC501.
IC101.
- 16 -
Screen is black.
Check FBT & CPT socket
& CPT.
YES
NO
YES
Check/Replace
CPT Socket, R910, 931, 942.
NO
Check the waveform at
PIN100 of IC101.(CVBS4)
NO
Check the waveform at
Pin63 of IC201.(TV)
YES NO
Check the waveform at
Check/Replace
TU101,Q106, Q225.
IC201.