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Troubleshooting
6. Troubleshooting
6-1 Checkpoints by Error Mode
Power LED: Check that the LED works when turning the Master Switch ON/OFF
LED Indicators: See table 6-2-1 Basic Troubleshooting: LED Diagnosis on the Front Panel.
In case of a power failure or abnormal screen, check the following items.
1) Check that the power cord is correctly connected to a 230V wall outlet.
2) Check that the Master Switch has been pressed.
3) Check that the transmitter is turned on.
4) Check that transmitter device selection is set to TV.
5) Check that the signal cable is properly connected.
6) Check that channel setting has been set.
Samsung Electronics 6-1
Troubleshooting
6-1-1 Flow Chart for Malfunction
No Picture & No Sound
Check the AC
voltage impress
Check the master
switch on
Check the
Check the Yes Check the Yes Yes
IC801S #1 Check the others part
FUSE "FP801S" "D801S" #1
W6750F
Yes No No
Change "IC801S"
Change "FP801S" Change "D801S"
Yes
Compleat
Repair No Power
No picture & no sound
(1st power OK)
Yes Check the others
Check the +125V line
B+ line
No
"D811"(D805A) open Yes T444 B+ Pin #3 Yes Check the +125V line
and check Open and check others part
No No
Change the "D805A" Yes
Check the "Q401"
(D805A) IC601 IC901 IC201S TU01S
No
Change the "Q401"
Compleat
repair no power
IC802
IC803
Q401S
IC804
LED
T401S
Power cord IC801S QE01 IC301S
6-2 Samsung Electronics
Troubleshooting
6-2 Troubleshooting Procedures by Error Modes
6-2-1 Basic Troubleshooting: Diagnosis of LED on the Front Panel
CL29M16
CL29M21
CL29T21
: Light is On
: Light is Blinking
: Light is Off
Power Description
This happens when the Master Switch is not pressed or the power cord is disconnected.
This happens when the power cord is connected and the power switch is pressed.
If you cannot set the power switch on by pressing it, check the power switch Ass'y.
If you press the power switch of the transmitter or the channel key on the remote control when in
St-BY status, the screen will be turned on.
If the LED blinks and the screen is not displayed, check the connection between the Control
Assy and the Main Board.
6-2-2 Troubleshooting by the Checksum
Diagnosis of trouble by the checksum is neither reliable nor convenient.
You can only use the checksume of the current direct-view TV to determine whether the software is corrupted or not.
The Checksum value is determined according to the version of the software loaded on the set.
Therefore, you can determine whether the software has been properly downloaded, if you know the correct checksum for that
version of the software.
You can check the checksum according in the following order.
Factory Mode Checksum Right Button Calculate Checksum Output Checksum (e.g. 3036)
Checksum Examples
T-TR2PEU-1000 : checksum = 8036
T-TR2PEU-1010 : checksum = B612
Samsung Electronics 6-3
Troubleshooting
6-3 Troubleshooting Procedures by ASS'Y
6-3-1 No Power (1st Power)
No Picture & No Sound
Check the AC
voltage impress
Check the master
switch on
Check the
Check the Yes Check the Yes Yes
IC801S #1 Check the others part
FUSE "FP801S" "D801S" #1
W6750F
Yes No No
Change "FP801S" Change "D801S" Change "IC801S"
Yes
Compleat
Repair No Power
6-3-2 No Picture(2nd Power)
No picture
(1st power OK)
Yes Check the others
Check the +125V line
B+ line
No
Yes
"D811"(D811A) open Yes T444 B+ Pin #3 Yes Change IC201
Check IC501 Pin#6
and check Open and check
No No
Change the "D811" Yes No
Check the "Q401"
(D811A)
No
Change the "Q401" Change IC501
Compleat
repair no picture
6-4 Samsung Electronics
Troubleshooting
6-3-3 No Sound
No sound
(1st power OK)
Check the +14V line
No
Yes
Yes
Check FD801S Yes Change IC201
Check D807 Check IC201 Pin#58,59
(FD802S)
No No
Change FD801S Yes
Check IC601 Pin#6
(FD802S)
No
Change IC601"
Compleat
repair no sound
IC601 IC901 IC201S TU01S
IC802
IC803
Q401S
IC804
LED
T401S
Power cord IC801S QE01 IC301S
Samsung Electronics 6-5
MEMO
6-6 Samsung Electronics