Technical description and composition of the HAIER LE50K5500TF TV, type of panel and applicable modules. The composition of the modules.HAIER LED
Model: LE50K5500TF
Chassis / Version: T.MS6486.751
Panel: V500HJ1-PE8
LED backlight: LED50D06-ZC14AG-01 30350006205
LED driver (backlight): integrated into PSU
PWM LED driver: OCP8128
MOSFET LED driver: 60R360Q
Power Supply (PSU): TV5502-ZC02-01
PWM Power: TEA1716, SY8113B
MOSFET Power: BYC8X-600P, 13NM60 (PFC)
MainBoard: T.MS6486.751
IC MainBoard: NAND: MX30LF4G18AC-TI, DRAM: NT5CB256M16DP-EK, WIFI-2-M603USA1
Tuner: DVB-T, DVB-T2, DVB-C
Technical Specifications LE50K5500TF
HAIER LE50K5500TF
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The HAIER LE50K5500TF TV does not turn on, does not respond to the remote control and the control panel buttons, does not light up or blink indicators.
In such cases, the TV5502-ZC02-01 power supply is usually faulty. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of power switches (BYC8X-600P, 13NM60 (PFC)) of converters and rectifier diodes for possible short circuit.
In the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. Chips PWM (PWM) TEA1716, SY8113B are usually checked by replacing with new, or obviously working.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a malfunction, the zener diode PN junction 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.MS6486.751 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). Sometimes they require checking or replacing (if necessary) the elements of the MainBoard - WIFI-2-M603USA1. In cases where the BGA processor is used, its malfunction is usually detected by local heating.
If you suspect a malfunction of the DVB-T, DVB-T2, DVB-C tuner, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
It should be remembered! Attempts to independently repair the HAIER LE50K5500TF 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!
SCHEMATIC DIAGRAM / PSU ------------------> TV5502-ZC02-01 Power supply
The appearance of MainBoard T.MS6486.751 is shown in the figure below:
T.MS6486.751
The appearance of the power supply
Key Features of HAIER LE50K5500TF:
Installed matrix (LED-panel) V500HJ1-PE8.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the OCP8128 PWM controller. As power elements of the LED driver, keys of the 60R360Q type are used.
The necessary supply voltages for all nodes of the TV HAIER LE50K5500TF are generated by the TV5502-ZC02-01 power supply module or its analogs using TEA1716, SY8113B microchips and power switches of the BYC8X-600P, 13NM60 (PFC) type.
MainBoard - the main board (motherboard) is a T.MS6486.751 module, using NAND chips: MX30LF4G18AC-TI, DRAM: NT5CB256M16DP-EK, WIFI-2-M603USA1 and others.
The tuner DVB-T, DVB-T2, DVB-C provides the reception of television programs and tuning to channels.
Brand: HAIER, Model: LE50K5500TF.
Briefly from the TV: LCD, LED backlight, 50 ", 1920x1080, 1080p Full HD, DVR, sound: 20W, HDMI: 3, Internet access, Wi-Fi, Smart TV.
The composition uses MainBoard T.MS6486.751 and LCD-panel V500HJ1-PE8.
Power Supply Unit (PSU) TV5502-ZC02-01 Power Supply.
HAIER LE50K5500TF TV with V500HJ1-PE8 LCD, 50 "(127 cm) diagonal size 16: 9 format. The required screen brightness of 280 cd / m² is provided by LED backlighting. Contrast ratio as the ratio of maximum brightness to minimum is 3000: 1. Dynamic contrast of 3,000,000: 1 is achieved by special control of the LEDs. The LED screen technology is implemented in the manufacturing technology of the screen of this TV model. The design and technical capabilities of the TV include watching programs and movies in high HD quality at a resolution of 1920x1080 pixels in the graphic decomposition according to the standard 1080p (Full HD).
The LE50K5500TF is equipped with SMART software, embedded applications and the ability to work on the Internet. Connecting to the Internet can be done via Wi-Fi. Supported media file formats: MP3, MPEG4, 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, VGA, HDMI x3, USB x2, Ethernet (RJ-45), Wi-Fi. An output for connecting headphones is provided.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: with stand 1085x677x244 mm, without stand 1085x633x72 mm.
TV Weight: with stand: 13.8 kg, without stand: 10.4 kg.
Attention! The panel V500HJ1-PE8 of the HAIER LE50K5500TF 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.