Samsung TSL3294HF Service Manual - Page 26
Troubleshooting
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5. Troubleshooting 5-1 No Power Disconnect the power cord Troubleshooting Check Power LED LED ON LED OFF Check IC901 pins 35 , 49 Abnormal Check IC902,IC903 Check IC901 B+ Normal Abnormal Check/Replace IC902, Check I2CII Check R455 Normal Check Q802 Abnormal Normal Check RL802S Replace Q802 Abnormal Abnormal Check IC803S, PC802S FA802S Check IC905 (EEPROM) Abnormal Normal Check 135V line Replace Q802 Abnormal Abnormal Check CN902 Check Q405 QF09, QP10 Abnormal Check TRANS 28V, 16V LINE Check IC804, FA801S Normal Check F-BOX 5V B+ Normal Check F-BOX HD, VD Abnormal Check the voltage of Trans Pin 1 Abnormal Normal Check IC801S, DZ803, PC801S, DZ804, Q801 Check D806 Check F-BOX I2C Check Q404, Q405 Normal Replace F-BOX Check H-BLK, V-BLK LINE Samsung Electronics 5-1
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