Technical description and composition of the HAIER LE32B8500T TV, type of panel and applicable modules. The composition of the modules.HAIER LED
Model: LE32B8500T
Chassis / Version: MS34631-ZC01-01
Panel: V320BJ6-Q01
LED backlight: LED315D10-07 (B) 30331510219
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: MS34631-ZC01-01
IC MainBoard: SPI FLASH: 25Q64, AUDIO: TPA3110D2
Tuner: DVB-T2
Control: IR: TV3024-ZC10-01 (E)
Technical Specifications LE32B8500T
HAIER LE32B8500T
General repair guidelines for TV LCD LED
Possible malfunctions
- The HAIER LE32B8500T does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
In such cases, the main power source, the AC / DC voltage converter, which is combined with the MainBoard MS34631-ZC01-01, may turn out to be faulty. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches and rectifier diodes in the converters for possible breakdown.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often 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 responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
As a rule, in such cases there is no display 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 a health indicator. 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 MS34631-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). Sometimes they require checking or replacing (if necessary) the elements of the MainBoard board - SPI FLASH: 25Q64, AUDIO: TPA3110D2. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
Before changing the DVB-T2 tuner, if it is not possible to tune to television channels, 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
Once again, remind users! Attempts to independently repair the HAIER LE32B8500T TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH ----------> HAIER LE32B8500T, Main: MS34631-ZC01-01, Panel: V320BJ6-Q01
The appearance of the MainBoard MS34631-ZC01-01 is shown in the figure below:MS34631-ZC01-01
Key Features of HAIER LE32B8500T:
Installed matrix (LED-panel) V320BJ6-Q01.
To power the backlight LEDs, a converter is used, combined with the main board MS34631-ZC01-01.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a module MS34631-ZC01-01, using microchips SPI FLASH: 25Q64, AUDIO: TPA3110D2 and others.
The DVB-T2 tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V320BJ6-Q01
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%)
Transmissivity: 6.0% (with Polarizer)
Contrast Ratio: 3000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 8.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
HAIER LE32B8500T TV with V320BJ6-Q01 LCD, 32 "(81 cm) diagonal size in 16: 9 format. The required screen brightness of 220 cd / m² is provided by LED backlight LED. Contrast ratio of the maximum brightness to the 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 technology of manufacturing the screen of this TV model. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard graphic decomposition 720p (HD Ready) Supported media file formats: MP3, WMA, MKV, JPEG.
The power of the sound speaker system 16 W (2x8 W) is provided by 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, audio x2, component, VGA, HDMI x2, USB, Ethernet (RJ-45). 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 733x469x248 mm, without stand 733x439x68 mm.
TV Weight: with stand: 6.1 kg, without stand: 4.42 kg.
Attention! The panel V320BJ6-Q01 of the HAIER LE32B8500T 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.
