Samsung 2013 LED TV Basic Troubleshooting Guides
Samsung 2013 LED TV Basic Troubleshooting Guides
Samsung 2013 LED TV Basic Troubleshooting Guides
▣ LVDS Test · · · · · · · · · · · · · · · · · · · · · · 13
▣ Picture Test · · · · · · · · · · · · · · · · · · · · · 14
▣ EDID Re-Write · · · · · · · · · · · · · · · · · · · · 18
▣ Sound Test · · · · · · · · · · · · · · · · · · · · · 21
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LED F Series
o LED Basic Structure
Panel
Lead Conn.
Label
SMPS
Main BD
LVDS
Function
BD
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T-Con BD
Speaker Speaker
WIFI Module
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LED F Series
Main Functions by component
SMPS Board.
This board provides the voltages for the backlight and the Main board.
Main Board.
The Main Board is where all the inputs for all the sources are located such as
the HDMI, Component, and USB ports. The Main Board also controls the
WIFI, Bluetooth, 3D, and Smart Hub functions, special applications, and all
other functions. The Main board processes information through the
microprocessor. For video information it encodes the data and sends it
through the LVDS cable to the T-Con Board. The Main Board also processes
audio information and sends it to the speakers.
T-Con Board.
The T-Con Board receives signal from the Main board via the LVDS cable
and processes it in order to send related drive signals to the panel. The drive
signals control the rows and columns of the LED panel and the operation of
the sub pixels.
The T-Con board also includes the Frame Rate Control or FRC circuit for 120
Hz and 240 Hz models. The FRC creates extra frames by reading the original
frames of video information, and then calculating and supplying additional
data to the panel.
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LED Troubleshooting
III.1 No Power Troubleshooting
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LED Troubleshooting
Main Board Test
Main Board test
1.- Remove the rear cover. 2.- Connect the power cord.
3.- Check if the Stand By LED is on. If it’s not on, refer to the Function
Board test (Page 75). If the Stand By LED is on, turn on the TV.
4.- If the TV does not power on or the LED backlights do not illuminate,
disconnect the power cord, and then the cable between the Main Board
and the SMPS.
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LED Troubleshooting
Main Board Test
5.- Reconnect the power cord. If the LED backlights illuminate, change the
Main Board.
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6.- If the LED backlights do not illuminate, check the SMPS as shown in E
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the SMPS troubleshooting section. (Page 74 ).
Note:
Figure 2
Figure 1
Since the function cable is attached to the rear cover, you must
disconnect the Jog controller assembly and then reconnect it to the
Main Board for testing (Figure 2).
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LED Troubleshooting
SMPS Test
Power Board (SMPS) test
1.- Verify the fuse on the SMPS for continuity to make sure it’s not open.
2.- After disconnecting the cable between the Main Board and SMPS check
the SMPS voltages. For this, first locate pins A5V or B5V and B13V using
the pin guide on the board.
3.- Measure the voltages with a multi-meter. For pins A5V or B5V, 5.3 volts
should be present. For B13V, the voltage measured should be 12.8 V. If
these voltages are not present, replace the SMPS.
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LED Troubleshooting
Jog Function Board Test
Function Board test
1.- Check the voltage for the IR pin. It 2.- Press any button on the remote
should measure 3.3 V. control. The voltage should fluctuate to
2.5 V. This indicates the IR is working
properly.
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3.- Locate the Key 1 pin on the Jog 4.- Voltage on Key 1 should change E
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Function Board. Press the center of the from 3.3 V to 0 V.
switch.
5.- Locate the Key 2 pin and push 6.- Push the Jog control to the right.
the Jog control to the left. Voltage Voltage should change fro 3.3 V to
should change from 3.3 V to 1.6 V. 2.5 V.
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LED Troubleshooting
Jog Function Board Test
Function Board test
7.- Push the Jog control up. Voltage 8.- Push the Jog control down. Voltage
should change from 3.3 V to 0 V. should change from 3.3 V. to 0.8 V.
Note:
Figure 2
Figure 1
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LED Troubleshooting
III. 3 Image Distortion Troubleshooting
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LED Troubleshooting
Image Distortion
Understanding the LED signal path is essential for troubleshooting. 2013 LED
models include input ports to the Main board through which signals are
decoded and then processed by the new FOX CPU (F7500 and F8000), X12
CPU (F6300 up to F7100), or X13 CPU (F4000 up to F5050). The Main
Board also generates an initial power on Boot logo that appears for a short
time but can be disable in the TV’s main menu.
The On Screen Display (OSD) and the Customer picture test are available in
standard menus. Also, the Service Menu includes pattern select test patterns
which you can use to test the Main Board.
For 120 Hz or 240 Hz models, the video data signal passes through the
LVDS cable to the T-Con board, here the FRC IC (Frame Rate Control) and
the T-Con processor has been combined. There are three sets of test
patterns for testing the T-Con board.
Test patterns from the FRC section are labeled “FRC Pres Test” and “FRC
Post Test”. There is also the “SOC T-Con Test” which is generated from the T-
Con processor on the board. From there, the final video signal passes to the
panel.
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LED Troubleshooting
LVDS Test
LVDS Connection.
1.- Confirm that the LVDS cable connectors are assembled properly.
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LED Troubleshooting
Picture Test
Picture Test.
1.- Press the Menu button on the 2.- Select the Self Diagnosis
remote control. Then, select the option.
Support option.
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LED Troubleshooting
Picture Test
6.- The TV will display a test pattern 7.- Again, if defects are found,
for the T-Con Board diagnosis from select Yes.
the FRC section (Pattern 2).
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8.- Another test pattern, now from 9.- Again, if defects are found, E
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the T- Con processor will display select Yes. The result window will
(Pattern 3). appear.
Note: On the X13 platform (F4000 up to F5050), Pattern 2 and 3 are not
available.
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LED Troubleshooting
T-Con Board Test
T-Con Test.
1.- Check the LVDS connector and 2.- Power on the TV and check
panel connectors for improper for the three T-Con LEDs.
connections.
3.- Check for the LED all the way to the right (See the arrow in the picture
below). it should measure 17 V. If it is off, the No Picture symptom will be
present.
4.- The middle LED should measure 5. The left LED should measure 12
3.1V. If this LED is off, the Video V. If it is off, the TV will present the
Noise symptom will be present. No Picture symptom.
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LED Troubleshooting
HDMI Ports Test
HDMI Test.
1.- Check all HDMI ports for physical damage.
2.- If none of the ports look damaged, but the TV still will not display a picture,
suspect an IC604 defect and replace Main Board. L
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3.- If one of the HDMI ports works, but the others do not, this could be caused D
by overflow voltage from an external device.
4.- Plug an HDMI cable into an 5. Check the voltage for each port on
HDMI port and power on the TV. the appropriate pin. Each port should
Select the source according to the measure 5 V.
HDMI port you are using. HDMI Port Pin
HDMI 1 Pin 3
HDMI 2 Pin6
HDMI 3 Pin 8
HDMI 4 Pin 11
6. If the voltages are not present, check if the HDMI cable is connected
properly and in good condition. If the cable is working, rewrite the EDID (See
Page 84.)
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LED Troubleshooting
EDID Re-Write
EDID Re-Write.
1.- Open the Factory Menu (See page 114), and then check the EDID option.
2.- If the EDID option displays“ Failure”, disconnect all external devices
connected to the TV’s HDMI connections, select the Control option, and then
select EDID.
3.- This option should be “Off” by default to make sure settings don’t change.
To perform an EDID Re- Write, press the right arrow button on the Factory
remote to change this option to “On”.
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LED Troubleshooting
EDID Re-Write
EDID Re-Write.
4.- Press the “Return” key on the Factory Remote. EDID information is
displayed on screen. Select EDID WRITE HDMI.
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5.- After the Re-write is finished, turn the EDID option “Off” again to prevent
other modifications by accident.
6.- Exit the Factory Menu. If the HDMI ports still do not work, replace the Main
Board.
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LED Troubleshooting
III. 4 Audio Distortion Troubleshooting
Audio
Distortion
Check all
Ext. Devices & Connections.
Yes Yes
No
External Are the speakers Exchange
source in good Speakers
problem condition?
Yes
Exchange
Main Board
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LED Troubleshooting
Sound Test
Sound Test.
1.- Press the Menu button on the 2.- Select the Self Diagnosis
remote control. Then, select the option.
Support option.
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5.- If defects are not found, suspect an issue with an external source. If
defects are found, check the speaker connections. To test if there is a problem
with the connections, try reinserting them, If the issue continues, replace the
speakers. If there is no problem with the connections, replace the Main board.
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LED Troubleshooting
Camera and Microphone Test
Camera and Microphone module test (F7500 and F8000).
The F7500 and F8000 series come with a camera module for Face Recognition
and Motion Control. 2013 Models have a retractable camera that can be
pushed into the main frame of the TV.
Before troubleshooting, make sure the camera assembly is working
mechanically.
1.- Press Mute + 569 + Exit on the remote control. If the camera is working
properly, a window will appear and display what the camera sees.
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LED Troubleshooting
Camera and Microphone Test
2.- Tap the left and right microphones at the top or rear part of the camera
module. Listen for a response to confirm the microphones are working
properly.
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Camera Test 2. D
1.- Press the Menu button on the 2.- Check for the Voice
remote. Select the Smart Features Recognition and Motion Control
option. options.
If either of them is grayed out or will not open, suspect a defective camera
module.
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LED Troubleshooting
Camera and Microphone Test
Camera Test 3.
1.- Press the Menu button on the 2.- Select the Contact Samsung
remote. Select the Support option. option.
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LED Troubleshooting
Camera and Microphone Test
Camera Test 4.
1.- Open Service Menu. Select SVC 2.- Select the ER Count option.
option.
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3.- Check the Camera ER Count option. D
If there is any number other than 0 displayed, this could indicate a defective
camera module.
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