Technical description and composition of the HAIER LE48U5000TF TV, type of panel and applicable modules. The composition of the modules.HAIER LED
Model: LE48U5000TF
Chassis / Version: MS34630-ZC01-01
Panel: LSC480HN08-802
LED backlight: LE48D8-03 D
T-CON: 15Y_L48GF11BMB7S4LV0.6
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: 13NM60 (PFC), BYC8X-600P
MainBoard: MS34630-ZC01-01
IC MainBoard: SPI Flash: 25L6405D
Tuner: DVB-T, DVB-T2 & SAT
Technical Specifications LE48U5000TF
HAIER LE48U5000TF
General repair guidelines for TV LCD LED
Possible malfunctions
- The HAIER LE48U5000TF does not turn on at all. There is no reaction to the remote control and front-panel control buttons. Indicator lights do not light or flash.
Most often, with such manifestations, the TV5502-ZC02-01 main power module is found to be faulty. It is necessary to measure its output voltages, and if they are absent (full or partial), the power switches (13NM60 (PFC), BYC8X-600P) of the converters and rectifier diodes should be checked for possible short circuit.
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.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) TEA1716, SY8113B, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
Often in such cases, there is no LED backlight. 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 is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the motherboard MS34630-ZC01-01 should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In cases of attempts to repair the MB board (SSB), you need to check the health of its elements - SPI Flash: 25L6405D which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before changing the DVBT & SAT tuner, if it is not possible to tune to television channels, you should make sure that there are supply voltages that must be measured at the corresponding tuner pins and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
We recommend LE48U5000TF TV owners to be repaired only by qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
SCHEMATIC DIAGRAM / PSU ------------------> TV5502-ZC02-01 Power supply
FIRMWARE FOR SPI FLASH ----------------> HAIER LE48U5000TF, Main: MS34630-ZC01-01, Panel: LSC480HN08-802
The appearance of the MainBoard MS34630-ZC01-01 is shown in the figure below:MS34630-ZC01-01
The appearance of the power supply
Key Features of HAIER LE48U5000TF:
Installed matrix (LED panel) LSC480HN08-802.
The matrix control uses the Timing Controller (T-CON) 15Y_L48GF11BMB7S4LV0.6.
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 HAIER LE48U5000TF TV are generated by the TV5502-ZC02-01 power supply module or its analogs using TEA1716, SY8113B microchips and 13NM60 (PFC), BYC8X-600P type power switches.
MainBoard - the main board (motherboard) is an MS34630-ZC01-01 module, using SPI Flash chips: 25L6405D and others.
Tuner DVB-T, DVB-T2 & SAT provides reception of television programs and tuning to channels.
HAIER LE48U5000TF TV with LSC480HN08-8 LCD display, 48 "(122 cm) diagonal size in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 4000: 1. Direct LED backlighting with Direct LEDs is realized in the LCD panel of the TV. The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution of 1080p (Full HD). Supported media file formats: MP3, MPEG4, 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, VGA, HDMI x3, USB.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The power consumed by the TV working in the network mode is 98 watts.
Overall dimensions: with stand 1083x674x238 mm, without stand 1083x631x69 mm.
The mass of the TV: 10 kg.
Attention! The panel of the LSC480HN08-8 HAIER LE48U5000TF 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.