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Download 5. Troubleshooting - e-Rusu
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Samsung Electronics Replace EEPROM(IC902) Abnormal Replace Q909, Q910 Abnormal Check MICOM IIC #5, #6 Replace FBT Normal Check 135V Line Normal Check Q401 H-TR Normal Check IC201S VDP H-OUT #50 Normal Check IC802, IC803 Normal Check Q908 Normal Normal Abnormal Abnormal Abnormal Abnormal Check PC801S, IC801S Replace Q401 Replace IC201S Replace IC802, IC803 Replace Q908 Check the MICOM Power #59 With Remote Controller Abnormal Normal Check LED lamp Replace the MICOM Abnormal OFF Check IC801S and FP801S Abnormal Check R828 and D805 Abnormal Check IC804 Input Voltage Normal Check D801 and D811 Abnormal Check IC903 3.3V Regulator Input Voltage Abnormal Normal Normal Abnormal Normal Check IC901 MICOM Input Voltage Check and Replace R828 or D805 Check and Replace IC804 Replace D801 or D811 Check and Replace IC903 Check and Replace the MICOM Normal 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. Check IC201S Normal Check IC902 EEPROM Normal Check MICOM IIC #2, #3 Normal Check Level Shifter Q909, Q910 Output(If 2N7000 Output has the DC Component over 0.7V, it is broken) Abnormal ON Plug in Power Cord Troubleshooting 5. Troubleshooting 5-1 No Power 5-1 5-2 Check CRT and FBT Abnormal Check CRT PCB RK, BK, GK Check CRT and FBT Normal Check Heater Voltage Normal Check 200V, 16.5V Line Normal Abnormal Check Tuner CVBS Output Replace IC201S Check IC201S #63 or #59 Normal Abnormal 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) Check HIC202, HIC203, HIC204 Output Abnormal Normal No Picture, but sound is in normal operation Check IC301 Normal Check 8V Normal Abnormal Check IC803 Abnormal Check IC201S #31 Replace IC201S Normal Check DZ202 Abnormal Replace DZ202 Abnormal Troubleshooting 5-2 No Picture Samsung Electronics Troubleshooting 5-3 No Sound No Sound, but Picture is in normal operation Normal Check the Speaker Wire Connection Abnormal Check the CN602 Connection and Signal Normal Check IC602 #7 (If the pin is in low state, Sound is mute) Check 14V Line Abnormal Abnormal Check FA803S 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 Replace IC601 Samsung Electronics Check the Tuner 5-3 MEMO 5-4 Samsung Electronics
