Troubleshooting.pdf

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Plug in Power Cord

OFF

ON

Check

LED lamp

Check

IC901 MICOM

Input Voltage

Abnormal

Check

MICOM IIC #5, #6

Normal

Normal

Abnormal

Check and Replace

the MICOM

Check

Level Shifter Q909, Q910

Output(If 2N7000 Output has the DC

Component over 0.7V, it is broken)

Check

IC903 3.3V Regulator

Input Voltage

Check

the MICOM Power #59

With Remote Controller

Normal

Normal

Abnormal

Check and Replace

IC903

Abnormal

Normal

Replace

the MICOM

Abnormal

Normal

Check

D801 and D811

Abnormal

Replace

D801 or D811

Check

MICOM

IIC #2, #3

Abnormal

Abnormal

Replace

Q909, Q910

Check

Q908

Replace Q908

Normal

Normal

Normal

Check

IC804 Input Voltage

Normal

Check

IC902 EEPROM

Replace

EEPROM(IC902)

Check and Replace

IC804

Abnormal

Check

IC802, IC803

Replace

IC802, IC803

Abnormal

Normal

Normal

Check

R828 and D805

Normal

Check and Replace

R828 or D805

Check IC201S

Check

IC201S VDP

H-OUT #50

Abnormal

Replace

IC201S

Abnormal

Normal

Check

IC801S and FP801S

Abnormal

Check

Q401 H-TR

Replace

Q401

Normal

Abnormal

Check

135V Line

Check

PC801S, IC801S

Normal

Replace

FBT

Note : When you check whether any component is normal, you must let the output pin be open in order not to be affected by the side of output.

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No Picture, but sound is

in normal operation

Turn the VR of FBT, higher screen

voltage and Check the Deflection

is in Normal Operation

(If the deflection is in operation,

flyback signal is appeared)

Normal

Abnormal

Normal

Check

CRT PCB RK, BK, GK

Normal

Abnormal

Abnormal

Check

IC201S #31

Check

HIC202, HIC203,

HIC204 Output

Check

Heater Voltage

Abnormal

Abnormal

Abnormal

Abnormal

Check 8V

Check DZ202

Check

IC201S #63

or #59

Abnormal

Normal

Normal

Normal

Check CRT and FBT

Check

IC803

Replace

DZ202

Normal

Check CRT and FBT

Normal

Check

IC301

Replace

IC201S

Replace IC201S

Check

200V, 16.5V Line

Check

Tuner CVBS Output

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Troubleshooting

5-3 No Sound

No Sound, but Picture is

in normal operation

Normal

Abnormal

Check the CN602

Connection and Signal

Check the Speaker

Wire Connection

Normal

Abnormal

Check

14V Line

Check

IC602 #7

(If the pin is in low state,

Sound is mute)

Check

FA803S

Abnormal

Normal

Check

D816, Q906

Check

IC601 #24, #25

Abnormal

Normal

Replace

IC602

Check

IC601 Input

Voltages (5V,8V)

Abnormal

Normal

Check

the coils around IC601

Check

IC601 Input Signal

Abnormal

Normal

Check

the Tuner

Replace

IC601

Samsung Electronics

5-3

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MEMO

5-4

Samsung Electronics

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