Technical description and composition of the HYUNDAI H-LED32V25 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED32V25
Chassis / Version: TP.VST59S.P89
Panel: LC320EXN (SE) (E1)
LED backlight: ZDCY315E120R-ZC14A-01, ZDCY315E120L-ZC14A-01
T-CON: 6870C-0414A (SE) (E1)
LED driver (backlight): integrated into MainBoard
PWM LED driver: OB3350CP
Power Supply (PSU): integrated into MainBoard
PWM Power: LD7536
MainBoard: TP.VST59S.P89
IC MainBoard: CPU: TSUMV59XES-XG, Spi Flash: W25Q32, AUDIO: TPA3110LD2
Tuner: R620D
Control: IR: L24M-IR-DT-V1.0
Technical Specifications H-LED32V25
HYUNDAI H-LED32V25
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The HYUNDAI H-LED32V25 TV 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.
First of all, in such cases, you should verify the operability of the common switching power supply (IIP) - AC / DC voltage converter of the mains voltage. All source elements in this TV model are located on the MainBoard TP.VST59S.P89 main board. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches and rectifier diodes of the converters for a probable short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. The LD7536 PWM controllers, in the absence of visible damage or open faults between the terminals, are checked by replacing them with new ones, or with obviously good ones.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it 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.
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 failure, 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 TP.VST59S.P89 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 it is necessary to check or replace (if necessary) the elements of the MainBoard board - Cpu: TSUMV59XES-XG, Spi Flash: W25Q32, AUDIO: TPA3110LD2. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If you suspect a malfunction of the R620D 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 impulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
TV users and owners must remember that attempts to self-repair a HYUNDAI H-LED32V25 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
The appearance of MainBoard TP.VST59S.P89 is shown in the figure below:TP.VST59S.P89
The TP.VST59S.P89 motherboard is combined with a power module and is an independent device made on the basis of the TSUMV59Xxx multifunction processor. Repair of such a board must begin by checking the power batteries, as well as the operability of voltage converters and linear stabilizers, necessary to provide power to certain processor nodes, in particular: + 1.2V core power, built-in DDR + 1.8V memory and Stand- by 3.3V. The power supply voltage of the LCD panel is 5V or 12V, depending on the type of panel used, it is necessary to check directly on the LVDS connector.
TP.VST59S.P89 can be used in TVs:
AKAI LEA-32A08G (Panel LC320EXN (SE)(E1)), AKAI LEA-28A08W (Panel ST2751A01-1), DEXP 32A3300 (Panel JHD315GH-E52), DNS H32A30 (Panel JHD315GH-E52), FUSION FLTV-32L42B (Panel KM315E3-CS-02), TELEFUNKEN TF-LED32S6 (Panel CX315DLEDM ST3151A05-5).
Main features of the HYUNDAI H-LED32V25 device:
Installed matrix (LED-panel) LC320EXN (SE) (E1).
The matrix control uses the Timing Controller (T-CON) 6870C-0414A.
To power the backlight LEDs, a converter is used, combined with the TP.VST59S.P89 main board, controlled by the OB3350CP PWM controller.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using LD7536 microcircuits.
MainBoard - the main board (motherboard) is a TP.VST59S.P89 module, using Cpu chips: TSUMV59XES-XG, Spi Flash: W25Q32, AUDIO: TPA3110LD2 and others.
The R620D tuner provides TV reception and channel tuning.
HYUNDAI H-LED32V25 TV with LC320EXN LCD, 32 "(81 cm) diagonal size in 16: 9 format. The required screen brightness of 280 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1500: 1. Edge LED backlighting is realized in the LED-panel of this TV - Edge LED. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in an analog system . Ah PAL, SECAM, NTSC Image processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats:. MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the acoustic system of sound 20 W (2x10 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, 1360x768.
Overall dimensions: 737x508x200 mm.
Mass of the TV: 10.5 kg.
Attention! The HYUNDAI H-LED32V25 LED TV panel LC320EXN (SE) (E1) 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.