Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as
electrical shock.
1-1-1. Warnings
For continued safety, do not attempt to modify the circuit board.
WARNING
1-1-2. Servicing the LED TV
When servicing the LED TV, Disconnect the AC line cord from the AC outlet.1.
It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of this 2.
meter periodically.
1-1-3. Fire and Shock Hazard
Before returning the monitor to the user, perform the following safety checks:
Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the 1.
chassis and other metal parts in the monitor.
Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and 2.
compartment covers or shields, isolation resistorcapacitor networks, mechanical insulators, etc.
Leakage Current Hot Check:3.
Disconnect the AC power and DC power jack before servicing.
(READING SHOULD)
DEVICE
UNDER
TEST
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
NOT BE ABOVE 0.5mA
2-WIRE CORD
TEST ALL
EXPOSED METAL
SURFACES
LEAKAGE
CURRENT
TESTER
EARTH
GROUND
Do not use an isolation transformer during this test.
Use a leakage current tester or a metering system that complies with American National Standards
WARNING
Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL
Publication UL1410, 59.7).
With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch rst 4.
in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, conduit, etc.)
and all exposed metal parts, including: metal cabinets, screwheads and control shafts.
The current measured should not exceed 0.5 milliamp.
Reverse the power-plug prongs in the AC outlet and repeat the test.
1-1
Page 6
1-2
1. Precautions
1-1-4. Product Safety Notices
Some electrical and mechanical parts have special safetyrelated characteristics which are often not evident from visual
inspection. The protection they give may not be obtained by replacing them with components rated for higher voltage,
wattage, etc. Parts that have special safety characteristics are identied by on schematics and parts lists. A substitute
replacement that does not have the same safety characteristics as the recommended replacement part might create
shock, re and/or other hazards. Product safety is under review continuously and new instructions are issued whenever
appropriate.
Page 7
1-3
1. Precautions
1-2. Servicing Precautions
An electrolytic capacitor installed with the wrong polarity might explode.
WARNING
Before servicing units covered by this service manual, read and follow the Safety Precautions section of
CAUTION
NOTE
1-2-1. General Servicing Precautions
Always unplug the unit’s AC power cord from the AC power source and disconnect the DC Power Jack before 1.
attempting to: (a) remove or reinstall any component or assembly, (b) disconnect PCB plugs or connectors, (c) connect
a test component in parallel with an electrolytic capacitor.
Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes used. 2.
The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such elements
to their original position.
After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that 3.
the area around the serviced part has not been damaged.
Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, input 4.
terminals and earphone jacks).
Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect 5.
an insulation resistance meter (500 V) to theblades of the AC plug. The insulation resistance between each blade of the
AC plug and accessible conductive parts (see above) should be greater than 1 megohm.
Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; 6.
always remove the instrument’s ground lead last.
this manual.
If unforeseen circumstances create conict between the following servicing precautions and any of the
safety precautions, always follow the safety precautions.
Page 8
1-4
1. Precautions
1-3. Static Electricity Precautions
Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonly
called Electrostatically Sensitive Devices (ESD). Examples of typical ESD are integrated circuits and some eld-effect
transistors. The following techniques will reduce the incidence of component damage caused by static electricity.
Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your 1.
body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. To avoid a shock hazard,
be sure to remove the wrist strap before applying power to the monitor.
After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent 2.
accumulation of an electrostatic charge.
Do not use freon-propelled chemicals. These can generate electrical charges sufcient to damage ESDs.3.
Use only a grounded-tip soldering iron to solder or desolder ESDs.4.
Use only an anti-static solder removal device. Some solder removal devices not classied as “anti-static” can generate 5.
electrical charges sufcient to damage ESDs.
Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs 6.
are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive
materials.
Immediately before removing the protective material from the leads of a replacement ESD, touch the protective material 7.
to the chassis or circuit assembly into which the device will be installed.
Be sure no power is applied to the chassis or circuit and observe all other safety precautions.
CAUTION
Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, or 8.
lifting your foot from a carpeted oor can generate enough static electricity to damage an ESD.
Page 9
1-5
1. Precautions
1-4. Installation Precautions
For safety reasons, more than a people are required for carrying the product.1.
Keep the power cord away from any heat emitting devices, as a melted covering may cause re or electric shock.2.
Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature 3.
may cause re.
Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed 4.
to moisture. Otherwise, it may cause a re or electric shock.
Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check 5.
the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause re or electric
shock.
Keep the antenna far away from any high-voltage cables and install it rmly. Contact with the highvoltage cable or the 6.
antenna falling over may cause re or electric shock.
When installing the product, leave enough space (0.4m) between the product and the wall for ventilation purposes. 7.
A rise in temperature within the product may cause re.
If an equipment is provided with a replaceable battery, and if replacement by an incorrect type could result in an 8.
explosion (for example, with some lithium batteries), the following applies:
Risk of explosion if battery is replaced by an incorrect type dispose of used batteries according to •
the instructions.
Do not dispose of batteries in a re.•
Do not short circuit, disassemble or overheat the batteries.•
CAUTION
Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent •
type.
Do not be exposed to excessive heat such as sunshine, re or the like.•
Page 10
2. Product Specications
2-1. Product information
ModelUN**HU6950F
2. Product specications
W
Front View
Detail View
Front ColorClear / Black
Dimensions
(W x H x D)
40"
50"
55"
40"
With stand916.9 X 585.9 X 258.0 mm
With stand1127.9 X 703.1 X 275.1 mm
With stand1239.7 X 765.0 X 275.1 mm
With stand11.4 kg
H
* W : Width H : High D : Depth
Body916.9 X 538.4 X 68.4 mm
Body1127.9 X 657.2 X 69.0 mm
Body1239.7 X 719.2 X 69.0 mm
Body8.7 kg
D
Weight
Panel TypeBlack
Internal Memory4GB
DDR2GB
Feature
50"
55"
Body14.0 kg
With stand17.0 kg
Body16.8 kg
With stand19.8 kg
Instant On, TTS/Zoom, History Digital Clean View, PIP, USB HID,
TV soundConnect, One Connect (Ready)
2-1
Page 11
2-2
2. Product specications
2-2. Product specication
2-2-1. Detailed Specications
NOTE
Design and specications are subject to change without prior notice.
Batteries (AA x 2)• 4301-000101User Manual• BN68-06501A
ImageProductCode. No
IR Extender Cable• BN96-31644A
Page 17
2. Product specications
RETURN
EXIT
GUIDE
CH.LIST
SMART HUB
KEYPAD
SOURCE
VOL
CH
VOICE
P.SIZECCINFOMTS
MENU
M.SCREEN
SEARCH
MIC
TV
G
G
GG G
2-4. Viewing the Functions
Samsung Smart Control
MUTE: Cuts off the sound
temporarily.
Microphone: Use the microphone with the Voice
Control and Voice functions.
The • Voice Control function can be affected
by unclear pronunciation, voice level, or
surrounding noise.
Turns the TV on and off.
SEARCH: Launches the Search function.
KEYPAD: Displays the On-Screen Remote. See the e-Manual chapter, Using the Remote Control and
Peripherals > Using the Samsung Smart Control >
Displaying and Using the On-Screen Remote.
SOURCE: Displays and lets you select video sources.
VOICE: Takes your voice commands and lets you
enter text using your voice.
Changes channels.
Adjusts the volume.
Touch pad
Place a nger on the touch pad and move the
Samsung Smart Control. The pointer on the screen
moves in the direction you moved the Samsung
Smart Control.
Press the touch pad to run the focused item.
Press and hold the touch pad to display the Context-
Sensitive Menus.
: Moves the cursor, selects the on-screen
menu items, and changes the values seen on the
TV's menu.
RETURN: Returns to the previous menu.
SMART HUB: Brings up Smart Hub applications. See
the e-Manual chapter, Smart Features > Smart Hub.
To exit an application quickly, press the •
GUIDE: Displays the EPG (Electronic Program Guide).
Use these buttons with a specic feature and
according to the directions on the TV's screen.
MENU: Displays the menu on the screen.
M.SCREEN: You can split the TV screen and enjoy multiple activities - such as watching
TV, surng the web, and watching a video - all at the same time.
button.
P.SIZE: Lets you choose the picture size.
MTS: Press to choose stereo, mono, or Separate Audio Program (SAP broadcast).
CC: Controls the caption decoder and displays captions on the screen.
INFO: Displays information on the TV screen.
2-8
Page 18
3. Disassembly and Reassemble
3. Disassembly and Reassembly
This section of the service manual describes the disassembly and reassembly procedures for the LED TV.
This UHD TV contains electrostatically sensitive devices. Use caution when handling these components.
WARNING
3-1. Disassembly and Reassembly
Disconnect the UHD TV from the power source before disassembly.1.
Follow these directions carefully; never use metal instruments to pry apart the cabinet.2.
CAUTION
40" / 50" / 55"
Remove screws from the Stand.
If there is no additional coment, it is same for all inches.3.
DescriptionPicture DescriptionScrews
1
Remove stand.
Torque :
9~11Kgf.cm.
6003-001208
3-1
Page 19
3-2
3. Disassembly and Reassemble
DescriptionPicture DescriptionScrews
Remove the screws of rear-cover.
2
(In this step, Two types of screws are
used.)
40" : 11EA / 2EA•
50" : 16EA / 2EA •
55" : 16EA / 2EA•
Remove the Main Board and the Power
3
Board.
Torque :
7~8Kgf.cm.
6001-002755
Torque :
9~11Kgf.cm.
6003-001782
NOTE
Applied to Double locking.
Flip up the locking tab on top of the 1.
connector.
Squeeze the edge of the connector 2.
to release the second tab lock and
gently pull the connector away.
Page 20
3-3
3. Disassembly and Reassemble
DescriptionPicture DescriptionScrews
Remove the screws of main board.
4
Remove the screws of IP board.
Remove the IP board.
Torque :
7~8Kgf.cm
6001-003016
Remove the BT Module.
5
Page 21
3-4
3. Disassembly and Reassemble
DescriptionPicture DescriptionScrews
Remove the Wi-Fi module.
6
Remove the Speakers.(R/L)
7
Remove the screws of T-con.
8
Unlock the locking of T-con cable.
T-con Board
Torque :
7~8Kgf.cm
6001-003016
Page 22
3-5
3. Disassembly and Reassemble
DescriptionPicture DescriptionScrews
Completed disassembly.
9
Reassembly procedures are in the reverse order of disassembly procedures.
Panel•
NOTE
Page 23
4. Troubleshooting
4-1. Troubleshooting
4-1-1. Previous Check
Check the various cable connections rst.1.
Check to see if there is a burnt or damaged cable. -
Check to see if there is a disconnected or loose cable connection. -
Check to see if the cables are connected according to the connection diagram. -
Check the power input to the Main Board.2.
4. Troubleshooting
Main Board
Power Cable
LVDS Cable
T-con Board
Speaker
How to distinguish if the problem is caused by 3. Main Board or T CON
No Video -
If the problem is No Video but BLU is on and Indication LED is blinking repeatedly and faster than nomal booting,
replace the T-CON board.
Distorted Picture -
Check the inner patterns.
For All mode•
NT14UNT72323BG FRCPictureProblem
Power Board
OKOKNGMain Board or Signal Source
NGOKNGMain Board
NGNGNGMain Board or LVDS cable or T CON or Panel
Only for HDMI mode (additional check)•
HDMIPictureProblem
OKNGThere is no problems after HDMI IC check HDMI source or HDMI jack.
NGNGThere is no problems before HDMI IC check X12 pattern or LVDS cable or T CON
4-1
Page 24
4-2
4. Troubleshooting
How to check inner pattern?
Enter the service mode 1. ⇢ Choose ‘SVC’ ⇢ Check the ‘internal pattern.’
Enter ‘Service Mode.’2.
If you do not have Factory remote control -
Power OFF INFOMENUMUTEPower On
If you have Factory remote control -
INFOFactory
Choose ‘SVC 3. ⇢ Test pattern’.
Option
Control
Debug
SVC
ADC/WB
Advanced
Check inner patterns.4.
Test PatternTest Pattern Sel.
Page 25
4-1-2. Simple ow chart of malfunction
4-3
4. Troubleshooting
Does the TV turn
on?
No
Check the Power Cord.
Yes
Is any sound of
TV when RF signal
connected?
No
Yes
Yes
Can you see
anything on the
screen?
No
Check the LVDS
Cable connected.
If necessary replace the
T-CON Board.
Yes
Can you see
OSD menu running
on the screen?
No
Check LVDS cable
connected to Main Board.
If necessary, replace the
Main Board.
No
Change the Main Board.
Yes
Can you see Digital
Channel broadcast ?
No
Replace the Main Board.
A5V appear at
the pin 4 of CN201?
Yes
B13V appear at
the pin 11, 12, 13 of
CN201?
Yes
Please, contact Tech
support.
No
No
Check 24p Cable.
If necessary, replace the
SMPS Board.
Change the Main Board.
Page 26
4-4
4. Troubleshooting
4-2. How to Check Fault Symptom
4-2-1. NO Power
Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
The LEDs on The front panel do not work when connecting The power cord.•
Symptom
Major
checkpoints
The SMPS relay does not work when connecting The power cord.•
The units appears to be dead.•
The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are
improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
Check the internal cable connection status inside the unit.•
Check the fuses of each part.•
Check the output voltage of SMPS.•
Replace the Main Board.•
Diagnostics
Power indicator LED is on?
Yes
Check the backlight on,
when 24p cable unconnected ?
Yes
Check ‘Stand-By 5V’ ?
BD213 : A5.3V -
Yes
Check ‘Power input of Main Ass’y’ ?
BD206~BD208 : B13VS -
BD200~BD205 : B13V -
BD228 : B5V -
Yes
Check ‘Power IC output of Main Ass’y’ ?
IC209 : A3.3V -
BD2208~BD2212 : B2.5V / L204 : B5V
BD1900, BD2206 : B3.3V / BD2203~BD2205 : B1.5V
BD2214~BD2216 : B1.12V -
No
No
No
No
No
Check the power cord connection.
Replace 24p Power Cable.
Replace Main Power Ass’y.
Change the Main Ass’y.
Yes
Check Input power of ‘T CON Board’ ?
F1(T-CON) : PANEL_13V_PW -
No
Reconnect or Change.
the LVDS cable.
Page 27
Yes
4-5
4. Troubleshooting
Check Power of ‘T CON Board’.
CD220(T-CON) : VIN_12V -
Diagnostics
CautionMake sure to disconnect the power before working on the IP Board.
BT1(T-CON) : VCC_1.15V -
Yes
Please, Contact tech support.
No
Change the T CON Board.
Page 28
4-6
4. Troubleshooting
Location of Parts
Main Board_Front
A
D
B
C
Detail
BD228 : B5V
IC209 : A3.3V
A
L204 : B5V
C
BD2208~BD2212: B2.5V
BD2214 : B1.12V
B
D
BD1900 : B3.3V
BD206~BD208: B13VS
BD200~BD205: B13V
BD213 : A5.3V
BD2203 : B1.5V
Page 29
4-2-2. No Video (HDMI 1, 2, 3, 4 - Digital Signal)
4-7
4. Troubleshooting
Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
SymptomAudio is normal but no picture is displayed on the screen.•
Check the HDMI source.•
Major
checkpoints
Check the HDMI switch.•
This may happen when the LVDS cable connecting the Main Board and the Panel is •
disconnected.
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the HDMI source and check the
connection of HDMI cable ?
Yes
Check the signal at Input of Main Board ?
1
HDMI1 Clk Pin #10, #12 of CN801
DATA •
Pin #7, #9, #4, #6, #1, #3 of
CN801
HDMI2 Clk Pin #10, #12 of CN701
DATA •
Pin #7, #9, #4, #6, #1, #3 of
CN701
HDMI3 Clk Pin #10, #12 of CN700
DATA •
Pin #7, #9, #4, #6, #1, #3 of
CN700
HDMI4 Clk Pin #10, #12 of CN800
DATA •
Pin #7, #9, #4, #6, #1, #3 of
CN800
No
No
No
Check a set in the ‘Stand-by mode’.
Input the HDMI signal properly.
Check CN700,701,800,801
Check HDMI cable.
Change the Main Ass’y
or
Check IC1400(NT14U).
Change the Main Ass’y.
Yes
Check the Vby1 signal at output of
2
Replace the T CON / LCD panel?
CautionMake sure to disconnect the power before working on the IP Board.
Main board.(TX)
TX6_CLK : TCON SDA -
TX8_DATA : TCON SCL -
Yes
Check the LVDS cable?
No
No
Please, Contact tech support.
Check IC1400(NT14U).
Change the Main Ass’y.
Page 30
4-8
4. Troubleshooting
Location of Parts
Main Board_Front
A
Detail
CN700 : HDMI3
CN800 : HDMI4
A
CN701 : HDMI2
B
B
CN801 : HDMI1
Page 31
Waveforms
4-9
4. Troubleshooting
1HDMI input (RX_Data, RX_Clk)2LVDS output
Page 32
4-10
4. Troubleshooting
4-2-3. No Video (Tuner_CVBS)
Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
SymptomAudio is normal but no picture is displayed on the screen.•
Check the Tuner CVBS source.•
Major
checkpoints
Check the Tuner.•
This may happen when the LVDS cable connecting the Main Board and the Panel is •
disconnected.
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the RF source and check the
connection of RF cable.
Yes
Check the Power of Tuner ?
1
2
2
Pin #1 of Tuner : A3.3V_Tuner -
Pin #4 of Tuner : A1.8V_Tuner -
Yes
Check the CVBS data out of IC1400 ?
L903 : Tuner CVBS_OUT -
CVBS_OUT_TP : IC1400 CVBS_ -
OUT
Yes
Check the LVDS clk signal at output of
Main board. (TX)
TX6_CLK : TCON SDA -
TX8_DATA : TCON SCL -
No
No
No
No
No
Check a set in the ‘Stand-by mode’.
Input the RF source properly.
Change the Main Ass’y.
Check IC1400(NT14U).
Change the Main Ass’y.
Check IC1400(NT14U).
Change the Main Ass’y.
Yes
Check the LVDS cable?
Replace the T CON / LCD panel?
CautionMake sure to disconnect the power before working on the IP Board.
No
Please, Contact tech support.
Page 33
4-11
4. Troubleshooting
Location of Parts
Main Board_Front
B
A
Detail
A
Pin #4 : B3.3V
L903: TUNER CVBS OUT
B
C
CVBS_OUT_TP: IC1400 CVBS OUT
Pin #1 : A3.3V
C
Page 34
4-12
4. Troubleshooting
Waveforms
1CVBS OUT (Grey Bar)2LVDS output
Page 35
4-2-4. No Video (Tuner DTV)
4-13
4. Troubleshooting
Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
SymptomAudio is normal but no picture is displayed on the screen.•
Check the DTV source.•
Major
checkpoints
Check the Tuner.•
This may happen when the LVDS cable connecting the Main Board and the Panel is •
disconnected.
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the RF source and check the
connection of RF cable.
Yes
1
2
2
Check the ‘signal strength’ in Self
Diagnosis menu Strength is enough ?
Yes
Check the Power of Tuner ?
Pin #1 of Tuner : A3.3V_Tuner -
Pin #4 of Tuner : A1.8V_Tuner -
Yes
Check the LVDS clk signal at output of
Main board. (TX)
TX6_CLK : TCON SDA -
TX8_DATA : TCON SCL -
Yes
No
No
No
No
No
Check a set in the ‘Stand-by mode’.
Input the RF source properly.
Check the D-TV source.
Change the Main Ass’y.
Check IC1400(NT14U)
Change the Main Ass’y.
Check the LVDS cable?
Replace the T CON / LCD panel?
CautionMake sure to disconnect the power before working on the IP Board.
No
Please, Contact tech support.
Page 36
4-14
4. Troubleshooting
Location of Parts
Main Board_Front
B
A
Detail
A
Pin #4 : B3.3V
Pin #1 : A3.3V
B
Page 37
4-15
4. Troubleshooting
Waveforms
1LVDS output2CH_CLK, CH_VALID
2CH_CLK, CH_VALID
Page 38
4-16
4. Troubleshooting
4-2-5. No Video (Video AV)
Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
SymptomAudio is normal but no picture is displayed on the screen.•
Major
checkpoints
Diagnostics
CautionMake sure to disconnect the power before working on the IP Board.
Check the Video CVBS source.•
This may happen when the LVDS cable connecting the Main Board and the Panel is •
disconnected.
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the video source and check the
connection of video cable?
Yes
Check the LVDS clk signal at output of
2
Replace the T CON / LCD panel?
Main board. (TX)
TX6_CLK : TCON SDA -
TX8_DATA : TCON SCL -
Yes
Check the LVDS cable?
No
No
No
No
Check a set in the ‘Stand-by mode’.
Input the video source properly.
Check IC1400(NT14U).
Change the Main Ass’y.
Please, Contact tech support.
Page 39
4-17
4. Troubleshooting
Location of Parts
Main Board_Front
A
B
Detail
A
R1019, C1011 : COMP2_Y_CVBS
B
Page 40
4-18
4. Troubleshooting
Waveforms
1CVBS OUT (Grey Bar)2LVDS output
Page 41
4-2-6. No Video (COMPONENT)
4-19
4. Troubleshooting
Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
SymptomAudio is normal but no picture is displayed on the screen.•
Major
checkpoints
Diagnostics
Check the Component source•
This may happen when the LVDS cable connecting the Main Board and the Panel is •
disconnected.
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the component source and check
the connection of component cables ?
Y, Pb, Pr
Yes
Does the component data appear at ?
1
2
COMP2_Y_CVBS : R505 -
Pb : R504 -
Pr : R502 -
Yes
Check the LVDS clk signal at output of
Main Board. (TX)
TX6_CLK : TCON SDA -
TX8_DATA : TCON SCL -
No
No
No
No
Check a set in the ‘Stand-by mode’.
Input the component source properly.
Check CN502.
Change the Main Ass’y.
Check IC1400(NT14U).
Change the Main Ass’y.
Yes
Check the LVDS cable?
Replace the T CON / LCD panel?
CautionMake sure to disconnect the power before working on the IP Board.
SUBJECT:
The TV Gets Stuck in Step 7 During the Initial Setup.
SYMPTOM: During initial setup (Plug & Play), the TV may get stuck on Step 7. This occurs when the customer
interrupts the initial setup process.
REPAIR: Please follow the steps below to fix the issue.
1) For a wired LAN connection:
A. Disconnect the Ethernet cable from the TV.
This information is published for experienced repair technicians only and is not intended for use by the public. It does not c ontain warnings to advise non-technical
individuals of possible dangers in attempting to service a product. Only experienced professional technicians should repair products powered by elect ricity. Any
attempt to service or repair the product or products dealt with in this information by anyone else c ould result in serious injury or death. Information provided in t his
bulletin is subject to change or update without notice.
Page 83
2) For a wireless Wi-Fi connection:
Symptom1
Symptom2
Symptom3
Symptom4
L3
18 2
3) For both, update the TV firmware to the latest version. This fixes the problem permanently.
Note: Consult the Samsung Service Website at service.samsungportal.com for the Service Manual and other information
on this product.
B. Go to next step in Plu g & Pl a y.
C. Reconnect the Ethernet cable to the TV.
D. Run Plug and Play again (MENU ->System -> Setup) with out int err upti ng the pro c es s .
A. Turn the Router off.
B. Go to next step in Plug & Play.
C. Turn the Router back on.
D. Run Plug and Play again (MENU -> Syste m -> Setup) without interrupt ing the pro c es s .
You can also press Info + Mute on the remote to exit setup.
Symptom Guide
This information is published for experienced repair technicians only and is not intended for use by the public. It does not c ontain warnings to advise non-technical
individuals of possible dangers in attempting to service a product. Only experienced professional technicians should repair products powered by elect ricity. Any
attempt to service or repair the product or products dealt with in this information by anyone else c ould result in serious injury or death. Information provided in t his
bulletin is subject to change or update without notice.
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