Technical description and composition of the HAIER LE32Z50 TV, type of panel and applicable modules. The composition of the modules.
HAIER LED
Model: LE32Z50
Chassis / Version: T.MS6M181.6A
Panel: T315XW06 V5
LED driver (backlight): integrated into PSU
PWM LED driver: BIT3251
Power Supply (PSU): MP123 - NW
PWM Power: PWM SOT23-6
MainBoard: T.MS6M181.6A
IC MainBoard: MST6M181VS-LF-Z1
Tuner: ET-9L1E-E01WP
Control: HTR-D03
Appearance
HAIER LE32Z50
General repair guidelines for TV LCD LED
Possible malfunctions
- HAIER LE32Z50 does not turn on and does not show any signs of operability. Does not blink indicators and does not respond to any control buttons.
Most likely in this case, the MP123 power module is faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary first of all to check the power switches and rectifier diodes for a possible partial or complete breakdown.
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.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. PWM SOT23-6 PWM can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
In such cases, the most likely malfunction of the LED backlight elements. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the T.MS6M181.6A 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). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - MST6M181VS-LF-Z1. Defective components should be replaced.
Before changing the tuner ET-9L1E-E01WP, if it is not possible to tune to television channels, make sure that there are supply voltages that need to be measured on the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
It should be remembered! Attempts to independently repair the HAIER LE32Z50 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 manual --------------> HAIER LE32Z50 T.MS6M181.6A
The appearance of MainBoard T.MS6M181.6A is shown in the figure below:Repairing the motherboard T.MS6M181.6A, which uses the multifunctional processor MST6M181VS combined with a scaler, is advisable to start by checking the power supply of the standby mode, which is implemented using a separate linear stabilizer 3.3V. Further, in the operating mode, it is necessary to check the operability of linear stabilizers or voltage converters necessary to provide power to the processor nodes: 1.2V, 2.5V, 3.3V. A voltage of 2.5V is required to power the DDR W9425G6JH memory. If there is a backlight and no image, the power of the LCD panel 5V or 12V, depending on the type of panel used, it is advisable to measure directly on the LVDS connector. If the TV does not exit Stand-by, does not respond to the remote control and control buttons, update the SPI FLASH software.
T.MS6M181.6A can be used in TVs:
AKAI LTA-32L09P (Panel LTA320AP05), ERISSON 32LEN60 (Panel LTA320AN01 D02 ), ERISSON 32LEE01 (Panel 720p HD 1366x768), HAIER LE32Z50 (Panel T315XW06 V5), Hyundai H-LED32V6 (Panel HV320WXC-100), HYUNDAI H-LEDVD32V6 (Panel V320BJ2-P01), HYUNDAI H-LED32V16 (Panel CX315LEDM).
The appearance of the power supply
Key Features of HAIER LE32Z50:
Installed matrix (LED-panel) T315XW06 V5.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a BIT3251 PWM controller.
The necessary supply voltages for all nodes of the TV HAIER LE32Z50 are formed by the MP123 power module, or its analogs using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a module T.MS6M181.6A, using microchips MST6M181VS-LF-Z1 and others.
The ET-9L1E-E01WP tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T315XW06 V5
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
