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TROUBLE SHOOTING
Check pin 31 of MICOM.
5V
Check / Replace Check the voltage at
Q871,Q851,Q852,IC856, pin 41 of MICOM.
IC802,IC803.
3.3V 0V
Check the H-OUT voltage at
pin 8 of IC1113.
Check / Replace Check / Replace
IC11,FR359,FR360, D414,FR443,Q855,Q856.
8.0V 0V D339,D349.
Check the voltage of C404(+). Check / Replace
IC1113.
67V
Check / Replace Check the voltage at
R407,D867,FB854. pin 2 of FBT.
135V
Check / Replace Check / Replace
R865,L853,D850,F854. Q401, Q402, T401.
Check the voltage of C821.
Check the voltage at Check / Replace
pin 4 of STR. SW1101,F1511,T1511,
DB814,TH810.
15V
Check / Replace Check / Replace
R809,D802,D803. IC801 and the
secondary part of
POWER circuit.
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Check if heater element is lighting.
Check the heater voltage.
Check/Replace Increase the screen
FR442,R910. voltage of FBT.
Check/Replace
CPT. Retrace line is Screen is black.
visible.
Check the waveform Check FBT & CPT socket
at pin 73 of IC1111. & CPT.
Check the waveform Check the waveform
at pin 31~34,37~44,47~50 at pin 19 of TU101.
of IC1111.
Check the waveform Check/Replace
Check/Replace Check/Replace
at pin 1~7,10~17,63~64
IC1111. Q203,Q205,IC201. IC101.
of IC1112.
Check/Replace Check the waveform
IC1112. at pin 54~61 of IC1113.
Check/Replace Check/Replace
IC1113 IC1113,Q1107~1120.
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Check the voltage at pin3,13
of IC652(SOUND AMP).
15V
D850,F851.
5V 0V
CHECK/REPLACE CHECK/REPLACE
601,Q602,IC652. T101. CHECK/REPLACE
T101,Q109.
CHECK/REPLACE
T101.
Check the waveform
at pin 11 of P901B.
NORMAL
Check/Replace D2909~10,
IC1113,Q1110~Q1112. Q2902,Q2907~2910.
PIN CUSHION
21 IC1113.
IC1113. IC302
IC302 R424.
Q404, Q405. D402.
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Check the waveform at
pin 21,22 of IC601.
Check / Replace Check the waveform at
IC601. pin 1,3 of IC602.
Check / Replace Check / Replace
H/P JACK. IC602.
DON'T CATCH CHANNEL(MAIN)
Check the voltage at
pin9 of TUNER(33V).
Check/Replace Check the voltage at
R403,FB854,D861,ZD102. pin13 of TUNER(5V).
Check the waveform at Check/Replace
pin19 of T101(CVBS OUT). R124,IC101.
Check/Replace Check the waveform at
IC104 pin73 of IC1111.
Check/Replace Check/Replace
IC16,IC11. Q108,Q1272,F1201,IC1101.
Check the voltage at Check the voltage at
pin 14 of T101. pin 14 of T101.
2.5V 0V
CHECK/REPLACE CHECK/REPLACE CHECK/REPLACE
CHECK/REPLACE
T101. R127,IC11. Q107,IC11.
T101.
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Check the waveform
at pin 12 of IC11.
NO NORMAL
Check / Replace Check / Replace
Q1274,IC1101. IC11.
Check the voltage
at pin 1,6 of IC301.
Check / Replace Check the waveform
FR359,FR360,D339,D349. at pin 19,20 of IC1113.
Check / Replace Check / Replace
IC1113,Q1118,Q1121 IC301, D301.
Check the waveform at
pin 21,22 of IC601.
Check / Replace Check the waveform at
IC601. pin 1,3 of IC602.
Check / Replace Check / Replace
H/P JACK. IC602.
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