Technical description and composition of the HAIER LE55K6500U TV, type of panel and applicable modules. The composition of the modules.HAIER LED
Model: LE55K6500U
Chassis / Version: T.MS6586.U801
Panel: LSC550FN11
LED backlight: LED55D05A-ZC23AG-06, LED55D05B-ZC23AG-06
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): TV5006-ZC02-02
PWM Power: PWM SOT23-6
MOSFET Power: TO-220
MainBoard: T.MS6586.U801
IC MainBoard: CPU, NAND Flash, DDR
Tuner: DVB-T2 & SAT
Technical Specifications LE55K6500U
HAIER LE55K6500U
General repair guidelines for TV LCD LED
Possible malfunctions
- The HAIER LE55K6500U TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
In some of these cases, the main switching power supply, the TV5006-ZC02-02 module, is faulty. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches (TO-220) and the rectifier diodes of the converters for a short circuit probability.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM) PWM SOT23-6, if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
In most of these cases, a malfunction is detected in the nodes and backlight elements of the LED panel. The reason may be a break in the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the thong connectors,
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the T.MS6586.U801 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Board repair and replacement of CPU, NAND Flash, DDR microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If there is no reception of television channels, but the TV works properly from external devices, first of all, check the voltage of the DVB-T2 & SAT tuner and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
It should be remembered! Attempts to independently repair the HAIER LE55K6500U TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
The appearance of MainBoard T.MS6586.U801 is shown in the figure below:T.MS6586.U801
The appearance of the power supply
Key Features of HAIER LE55K6500U:
Installed matrix (LED-panel) LSC550FN11.
To power the backlight LEDs, a converter is used, combined with the T.MS6586.U801 main board.
The necessary supply voltages for all nodes of the TV HAIER LE55K6500U are generated by the TV5006-ZC02-02 power module, or its analogs using PWM SOT23-6 microcircuits and TO-220 type power switches.
MainBoard - the main board (motherboard) is a module T.MS6586.U801, using CPU chips, NAND Flash, DDR and others.
The DVB-T2 & SAT tuner allows you to receive television programs and tune to channels.
Brand: HAIER, Model: LE55K6500U.
Briefly from the TV: LCD, LED backlight, 54.6 ", 3840x2160, 4K UHD, HDR, DVR, there is a satellite tuner, sound: 20W, HDMI: 3, Internet access, Wi-Fi, Smart TV.
Manufacturer: TPV ICS Russia, Shushary, St. Petersburg and Qingdao Haier Industry Zone (China).
Developer: Haier Group Corporation. Qingdao (Qingdao). China
The composition uses MainBoard T.MS6586.U801 and LCD-panel LSC550FN11.
Power Supply Unit (PSU) TV5006-ZC02-02 Power Supply.
HAIER LE55K6500U TV with LSC550FN11 LCD, 54.6 "(139 cm) diagonal of 16:10 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 3000: 1. The LCD panel of the TV has direct backlighting with rear LEDs - Direct LED. You can watch movies in the highest possible quality UHD with a resolution of 3840x2160 pixels in the standard 4K UHD, HDR. Image processing is performed using advanced High Dynamic Range (HDR) technology with wider range of gradations of brightness.
The LE55K6500U TV has built-in SMART Software and pre-installed Linux Operating System. Connecting to the Internet can be done via Wi-Fi. Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), Xvid, DivX, MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, HDMI x3, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n. An output for connecting headphones is provided.
The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
Overall dimensions: with stand 1239x777x313 mm, without stand 1239x715x62 mm.
TV Weight: with stand: 13.4 kg, without stand: 13.1 kg.
Attention! The LSC550FN11 panel of a HAIER LE55K6500U LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.