Technical description and composition of the HAIER LE40M600F TV, type of panel and applicable modules. The composition of the modules.Haier LED
Model: LE40M600F
Chassis / Version: MSTV2410-ZC01-01
Panel: LSC400HN01-G01
LED driver (backlight): with integrated PSU
PWM LED driver: OB3368AP
Power Supply (PSU): TV3902-ZC02-01 (D)
PWM Power: OB5269CP
MainBoard: MSTV2410-ZC01-01
IC MainBoard: CPU: TSUMV59XUS, SPI FLASH: KH25L3206E
Tuner: Tuner
Technical specifications LE40M600F
HAIER LE40M600F
General repair guidelines for TV LCD LED
Possible manifestations of defects
- Haier LE40M600F TV does not turn on. The control lights do not light or flash. On the remote control and other control buttons does not respond.
In such cases, the TV3902-ZC02-01 power supply is usually faulty. It is necessary to measure the secondary output voltage, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during short circuit in the 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. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power key may be PWM (PWM) OB5269CP. It is checked only by replacement with a known good one.
- 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 for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the MSTV2410-ZC01-01 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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: TSUMV59XUS, SPI FLASH: KH25L3206E requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the Tuner tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
TV users and owners need to remember that attempts to self-repair a Haier LE40M600F TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH ---------------------> Haier LE40M600F, Main: MSTV2410-ZC01-01, Panel: LSC400HN01-G01
To reduce the backlight current in LED drivers with the OB3368AP controller, the total resistance of the resistors from the 17 ISET pin to the housing should be proportionally increased. The current in milliamperes in each channel is determined from the calculation of 4000 * 1.2 / Rset, where Rset is the resistance from the output of 17 ISET to the housing in kilo-ohms.
Repair MainBoard
The appearance of the MainBoard MSTV2410-ZC01-01 is shown in the figure below:
MSTV2410-ZC01-01
The appearance of the power supply
Key Features of HAIER LE40M600F:
Installed matrix (LED panel) LSC400HN01-G01.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the OB3368AP PWM controller.
The necessary supply voltages for all nodes of the TV HAIER LE40M600F are generated by the TV3902-ZC02-01 power module, or its analogs using OB5269CP chips.
MainBoard - the main board (motherboard) is an MSTV2410-ZC01-01 module, using CPU chips: TSUMV59XUS, SPI FLASH: KH25L3206E and others.
The Tuner provides TV reception and channel tuning.
HAIER LE40M600F TV with LSC400HN01-G01 LCD, 40 "(102 cm) diagonal size 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 4000000: 1 is achieved by special control of the LEDs. V The LED panels of this TV are equipped with edge LED backlighting - Edge LED.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 graphical decomposition according to the standard 1080p (Full HD). .. The first high-frequency or the video signal can be processed in analog PAL, SECAM system, NTSC Image processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats: MP3, JPEG.
The power of the sound system 16 W (2x8 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI x2, USB. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
Overall dimensions: With stand 930x599x210 mm, Without stand 930x554x70 mm.
Attention! The panel LSC400HN01-G01 of the HAIER LE40M600F 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.
