Technical description and composition of the SAMSUNG UE32C6600 TV, panel type and modules used. The composition of the modules.SAMSUNG LED
Model: UE32C6600
Panel: LTF320HF02 (BN07-00858A)
LED driver (backlight): integrated into PSU
PWM LED driver: SELC2010
Power Supply (PSU): BN44-00355A
PWM Power: ICE3BR1765J (Standby), UCC25600
MOSFET Power: FQPF9N50CF
MainBoard: BN41-01444C
IC MainBoard: WT61P802, 24C02, 24C256
Tuner: DT0S40CVH081A BN40-00172A
UE32C6600 Specifications
SAMSUNG UE32C6600
General recommendations for TV LCD LED repair
Possible malfunctions
- SAMSUNG UE32C6600 TV does not turn on, does not respond to the remote control and control panel buttons, does not light or blink indicators.
Often in such cases, the power module BN44-00355A is faulty. Its output voltages should be measured and, in their absence, the power switches (FQPF9N50CF) and rectifier diodes should be checked for the probability of a short circuit in the converters.
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is most often cut off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers ICE3BR1765J (Standby), UCC25600, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or known to be in good working order.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
Usually, in such cases, there is no backlighting of the LED panel (matrix). Usually the cause of the malfunction is in the breakage of the LEDs, or in the connectors of the LED strips, but sometimes the LED driver is also faulty.
It is impossible to check the line of series-connected LEDs without a special current source, and it is unsafe for them to use any voltage sources above 12V for this purpose. Then all that remains is to open the panel and check each LED separately. Usually, Chinese multimeters with 9V power supply lightly light one 3-volt LED, if you connect the probes to it in the forward direction, the red probe to the anode, the black one to the cathode. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or pierced in the K / Z.
- The TV does not turn on, the indicator signals the standby or operating mode, or blinks.
If SAMSUNG UE32C6600 has no picture, but there is sound, often the LTF320HF02 display backlight simply does not work. Moreover, in LED TVs, the LEDs inside the panel usually fail, less often the LED driver.
In such cases, you can see a barely noticeable image with a successful hit of external light on the screen.
Replacing the LEDs requires disassembling the LTF320HF02 LCD panel, a process that requires experience and qualifications from the technician. We do not recommend doing such work on your own to the owners of TVs and craftsmen who do not have experience in repairing LCD panels
If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV you can see the light through the holes in the panel case.
In this case, the panel may also be faulty - damage to the strips, loops, for example, as a result of moisture ingress after unsuccessful washing of the screen, the T-CON (Timing Controller) board may be faulty. But often the main board MainBoard BN41-01444 turns out to be faulty, a software failure is also possible.
Then, first of all, it is necessary to check the panel supply voltage, the fuses on the T-CON board, as well as the supply and reference voltages of the column and line drivers - VGH, VGL, Vcom.
If these measurements are within normal limits, it is necessary to trace the passage of LVDS signals from MainBoard BN41-01444 with an oscilloscope, as well as synchronization signals to the loops with drivers.
Flooded or unsuccessfully washed screens of LED TVs can be restored, in about half of the cases, usually if significant damage has not formed in the loops and panel strips.
In such cases, you can see a barely noticeable image with a successful hit of external light on the screen.
Replacing the LEDs requires disassembling the LTF320HF02 LCD panel, a process that requires experience and qualifications from the technician. We do not recommend doing such work on your own to the owners of TVs and craftsmen who do not have experience in repairing LCD panels
If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV you can see the light through the holes in the panel case.
In this case, the panel may also be faulty - damage to the strips, loops, for example, as a result of moisture ingress after unsuccessful washing of the screen, the T-CON (Timing Controller) board may be faulty. But often the main board MainBoard BN41-01444 turns out to be faulty, a software failure is also possible.
Then, first of all, it is necessary to check the panel supply voltage, the fuses on the T-CON board, as well as the supply and reference voltages of the column and line drivers - VGH, VGL, Vcom.
If these measurements are within normal limits, it is necessary to trace the passage of LVDS signals from MainBoard BN41-01444 with an oscilloscope, as well as synchronization signals to the loops with drivers.
Flooded or unsuccessfully washed screens of LED TVs can be restored, in about half of the cases, usually if significant damage has not formed in the loops and panel strips.
Repair or diagnostics of the BN41-01444C motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Complex repair of MB (SSB) is possible only in a service center with the necessary equipment. Checking or replacing WT61P802, 24C02, 24C256 elements requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
Before replacing the DT0S40CVH081A BN40-00172A tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Attention! Users and owners of UE32C6600 TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from trying to repair themselves in order to avoid negative consequences that may lead to the complete non-repairability of the device.
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Additional MainBoard Repair
The appearance of the MainBoard BN41-01444C is shown in the figure below:
BN41-01444C
BN41-01444C can be used in TVs:
SAMSUNG UE40C6510UW (Panel T400FBE2-DB), SAMSUNG UE32C6510UW (Panel LTF320HF02), SAMSUNG UE55C6000RW UE55C6000 (Panel LTF550HJ03), SAMSUNG UE40C6000 UE40C6000RW (Panel LTF400HJ05 (BN07-00913A)).
External view of the power supply
Main features of SAMSUNG UE32C6600 device:
Installed matrix (LED panel) LTF320HF02 (BN07-00858A).
To power the backlight LEDs, a converter combined with a power supply is used, controlled by the SELC2010 PWM controller.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE32C6600 TV is carried out by the BN44-00355A power module, or its analogs using ICE3BR1765J (Standby), UCC25600 chips and power switches of the FQPF9N50CF type.
MainBoard - the main board (motherboard) is a BN41-01444C module, using WT61P802, 24C02, 24C256 and others.
Tuner DT0S40CVH081A BN40-00172A provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF320HF02
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Display Colors: 16.7M (8-bit)
Frequency: 120Hz
Lamp Type: WLED
SAMSUNG UE32C6600 TV with LCD display LTF320HF02, diagonal size 32 "(81 cm) 16: 9 format. This model uses a panel with edge LED backlighting - Edge LED.
The LTF320HF02 sensor and MainBoard BN41-01444 software allow you to view broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics resolution at 1080p (Full HD).
The UE32C6600 TV is equipped with SMART software, built-in applications and the ability to work on the Internet. The connection to the network can be carried out via Wi-Fi wireless connection. The input analog video signal is decoded in PAL, SECAM, NTSC systems. Graphic processing of a digital signal is performed in the 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Sound speaker system power 20 W. The NICAM stereo audio processing system and the Sound Surround function are used.
Communication with other devices via an external interface is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, RGB, VGA, HDMI x4, USB x2, Ethernet (RJ-45), Wi-Fi. A headphone jack is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is provided. This interface supports standard resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
The digital tuner can receive TV channels in DVB-T MPEG4, DVB-C standards.
The power supply is BN44-00355A.
Dimensions: with stand 774x543x242 mm, without stand 774x479x31 mm.
TV weight: with stand: 10.2 kg, without stand: 8.5 kg.
Attention! SAMSUNG UE32C6600 LED TV panel LTF320HF02 is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.