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Download 5. Troubleshooting - e-Rusu
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Troubleshooting 5. Troubleshooting 5-1 No Power Counect the Power code Check the Power LED Check the 3.3V-A,8V-A Line of IC201S LED On LED Off Normal Check the X-tal,SDA,SCL port of IC201S Normal Abnormal Check the 12.5V-A Line Abnormal Replace IC201 S Normal Check the (33)Pin (H-Drive) of IC201S Abnormal Abnormal Check/Replace IC802 Check the FD802S, IC801S or AC-Fuse Normal Check the 130V- A Line Normal Abnormal Check the FBT,D808 Check / Replace Q401 Samsung Electronics 5-1 Troubleshooting 5-2 No Video (Sound OK) Check RK,GK,BK Signal Abnormal Check R,G,B Signal into CRT PCB Nornal Check IC501 B+(180V-B) Nornal Nornal Abnormal Check the Voltage of heater Re-Adjust Screen Voltage Abnormal Abnormal Check the resistance of R512 Nornal Abnormal Check/Replace R418,R513,D503 Nornal Replace R512 Check CRT and FBT Abnormal Check/Replace IC201S Abnormal Check IC201S Pin 51,52,53 (R.G.B) Check/Replace D407,FBT Nornal Check IC201S Pin 49(V-GUARD) Pin50(IK) Nornal Check CRT and FBT 5-2 Samsung Electronics Troubleshooting 5-3 No Sound (Video OK) Checkthe signal Output from CN602 CN603 Normal Abnormal Check Speaker and Wire Normal Check IC602 Pin8,9 Abnormal * STEREO Abnormal Check IC101,TUNER Abnormal * MONO Check IC601 Pin47(SIF) Normal Check IC601 B+ Normal Check B+ Line 5V-B, 8V-B Normal Check IC602 B+ Check/Replace IC601 Check IC201S Pin32(SIF) Normal Check/Replace IC201S Abnormal Check IC101,TUNER Abnormal Check R610,R611 Normal Check FD801S D805 Normal Replace IC602 Abnormal Replace IC610,R611 Abnormal Replace FD801S,D805 See No Power Samsung Electronics 5-3 Troubleshooting 5-4 Horizontal Lines Appear or Screen Check IC301 B+ 16V-C,-13.5V-C Abnormal Normal Check IC201S Pin 21,22 (VDN,VDP) Check R413,R414 D405,D406 Abnormal Normal Check IC201S Check / Replace IC301 5-4 Samsung Electronics
