Samsung SP43J6HDR Troubleshooting E.09
Troubleshooting
Samsung Electronics 6-1
6. Troubleshooting
6-1 Service Mode
1. To enter the Service Mode, press the remote-control keys in the following sequence:
Display → Picture Standard → Mute → Power
2. Use the Channel UP/DOWN keys to move within the Service Mode.
3. Use the Vol (+) key and Vol ( - ) key to change data.
(1) Press the Vol (+) key to increase data.
(2) Press the Vol (-) key to decrease data.
4. Use the Power key to exit and store data in memory.
6-2 No Power
Troubleshooting
6-2 Samsung Electronics
No
Yes
Yes
Check Stand-by 5V
on the Main Board
See "6-5 No Standy"
Check/Replace
Tuner
MICOM Module
AUDIO Module
A/V Terminal Board
(TDA6920)
Progressive Module
LCD Control Board
(TDA4780)
Check
SDA1/SCL1
on the Micom
Module
Check LED Operation
See "5-7 LED Display
Check"
No
6-3 No Picture
Troubleshooting
Samsung Electronics 6-3
Yes No
Check IC101 (TDA9810)
#10 (AGC), #12 (CVBS)
Check/Replace
IC101, Tuner
Replace
Progressive Module
No
Check Progressive
Module M-Y/CVBS,2Hsync,Vsync,
2Y,2R-Y,2B-Y,Href
Check ICL404 (TDA4780)
#14 (Sand castle pulse)
Yes
Yes
Yes
No
No
Check IC401,402,403
#5 (74HC1230
First check the circuitry
connected to the IC and
replace the IC
No
Check
ICL404(TDA4780)#6(B-Y)
#7(R-Y),#8(Y),#27(SDA)
#28(SCL)
Yes
Yes
No
Check CL129,
130,131 and AC2 5P connector for
#6,7,8 Check AC1 12P and SDA,SCL
output of micom module
for #27,28
Check the circuitry near
ICL404 and replace
micom module
No
Check the circuitry near
ICL404, replace IC201
(TDA4780)
Check ICL404(TDA4780)
#20(B-OUT),#22(G-OUT)
#24(R-OUT)
Check ICL204(CXA1853Q)
#9(R-in),#10(G-in),#11(B-in)
No
No
Check the circuitry near
QL401,QL402,QL403
around of ICL404(TDA4780)
Yes
Check ICL205(CXA2504N)
#23,#25,#27,#33,#35,#37
Yes
Yes
Check/ Replace
CNL04 (24P)
Replace ICL205(CXA2504N)
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