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Troubleshooting
6. Troubleshooting
6-1 No Power
No
Check Stand-by 5V on the Main Board
Yes
No
Check SDA1/SCL1 on the Micom Module
Yes
No Check/Replace IC201 (TDA4780) ICA01 (Auto-Plus) Tuner MICOM Module AUDIO Module A/V Terminal Board (TDA6920) Feature Box Module
Check HD Signal on the Feature Box Module
Yes
Check/Replace Q804, D824 RL802, D805 IC803, D802 D829 on the Power Board
Replace Feature-Box Module
Check/Replace Q405, D407 Q400, Q402 Q404 on the Power Board
Samsung Electronics
6-1
Troubleshooting
6-2 No Picture
Yes
Check IC101 (TDA9810) #10 (AGC), #12 (CVBS)
No
No
Check Feature Box Module M-Y/CVBS, H SYNC, HS2, Y, SC100
Yes Check/Replace IC101, Tuner
Replace Feature Box Module No Check IC201 (TDA4780) #14 (SC), #15 (ABL), #19 (Cut off) Yes
Replace TDA4780
Check/Replace IC501, IC502, IC503 on the CRT Board.
6-2
Samsung Electronics
Troubleshooting
6-3 No Sound
Yes
Check IC601, IC602 # 5 (MUTE)
No
No
Check Audio Module MAIN-L, SUR, CENTER, S-RESET, QSS-IN
Yes Check/Replace Q602, Q603 Micom Module IC601, IC602
Check/Replace IC101 Micom Module Audio Module
No
Check IC604 #9, #14, #15
Yes
Check/Replace IC604 MICOM Module
Replace IC601, IC602
Samsung Electronics
6-3