Technical description and composition of the HAIER LE43K6500U TV, panel type and modules used. The composition of the modules.
HAIER LED
Model: LE43K6500U
Chassis / Version: T.MS6586.U801
Panel: LC430EGY-SKM3
LED backlight: LED42D08B-ZC26AG-01
T-CON: 6870C-0738A
LED driver (backlight): integrated into PSU
PWM LED driver: OB3334CP
MOSFET LED driver: 70R380
Power Supply (PSU): TV5006-ZC02-02
PWM Power: PWM SOT23-6 OB2273
MOSFET Power: 70R600
MainBoard: T.MS6586.U801 515Y65866M011343R
IC MainBoard: CPU, NAND Flash, DDR
Tuner: DVB-T2 & SAT
Specifications LE43K6500U
HAIER LE43K6500U
General recommendations for TV LCD LED repair
Possible malfunctions
- The HAIER LE43K6500U TV does not turn on and does not show any signs of operation at all. No response to the remote control and front panel control buttons.
Most likely in this case the main switching power supply (SMPS) TV5006-ZC02-02 is faulty. It is necessary to measure its output voltages, and in case of their absence (full or partial), the serviceability of the power switches (70R600) of the converters and rectifier diodes should be checked for a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the elements of the primary circuit, the mains fuse most often breaks off immediately and, less often, the current sensor in the source of the key.
Breakdown of Mos-Fet keys used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) PWM SOT23-6 OB2273 are usually checked by replacing them with new ones, or knowingly working.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and immediately disappears
Usually, in such cases, there is no backlighting of the LED panel (matrix). Often the cause is a malfunction of the LEDs (open circuit, short circuit ...), or connectors of the strips (strings) LED42D08B-ZC26AG-01, less often the LED driver is faulty.
It is impossible to identify an open circuit in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Usually, Chinese multimeters lightly light up one 3-volt LED if you connect the probes to it in the forward direction (red probe to the anode, black 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.
READ HOW TO REPAIR THE TV LED BACKLIGHT --------------> HERE.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the T.MS6586.U801 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). If it is not possible to replace the MB (SSB) board, you need to check the health of its elements - CPU, NAND Flash, DDR. Defective components must be replaced.
Malfunction of the DVB-T2 & SAT tuner is established after checking the software and all supply voltages at its outputs. The data exchange of the tuner with the processor via the I2C bus can be monitored with an oscilloscope.
Owners of the LE43K6500U TV are advised to contact only qualified specialists with the necessary work experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM POWER SUPPLY ------------------> TV5006-ZC02-02 Power supply.
The appearance of the MainBoard T.MS6586.U801 is shown in the figure below:
T.MS6586.U801
External view of the power supply
TV5006-ZC02-02:
TV5006-ZC02-02
The main features of the HAIER LE43K6500U device:
The matrix (LED-panel) LC430EGY-SKM3 is installed.
Matrix control uses the 6870C-0738A Timing Controller (T-CON).
A converter combined with a power supply is used to power the backlight LEDs and is controlled by the OB3334CP PWM controller. The keys of the 70R380 type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the HAIER LE43K6500U TV is carried out by the TV5006-ZC02-02 power module, or its analogs using PWM SOT23-6 OB2273 microcircuits and power switches of the 70R600 type.
MainBoard - the main board (motherboard) is a T.MS6586.U801 module, using CPU, NAND Flash, DDR and others.
The DVB-T2 & SAT tuner provides reception of television programs and tuning to channels.
TV HAIER LE43K6500U with LCD display LC430EGY-SKM3, 42.5 "(108 cm) diagonal, 16:10 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1100: 1. The LCD-panel of the TV is equipped with a direct backlight with LEDs - Direct LED.
The LC430EGY-SKM3 matrix and the MainBoard T.MS6586.U801 software realize high-quality UHD images at a resolution of 3840x2160 pixels in 4K UHD, HDR. Image processing is implemented using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
LE43K6500U TV has built-in SMART software and pre-installed Linux Operating System. Internet connection can be made via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), Xvid, DivX, MKV, JPEG.
Speaker sound system power 20 W (2x10 W) is provided by two speakers. Uses NICAM stereo processing system and Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI x3, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.
The power supply unit TV5006-ZC02-02 is used.
Dimensions: with stand 966x620x250 mm, without stand 966x559x64 mm.
Attention! HAIER LE43K6500U LED TV panel LC430EGY-SKM3 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.