Monday, 27 April 2020

REPAIR / SERVICING TV HYUNDAI H-LED32V13

 Technical description and composition of the HYUNDAI H-LED32V13 TV, panel type and applicable modules. The composition of the modules.
HYUNDAI LED
Model: H-LED32V13
Chassis / Version: T.VST59S.81
Panel: HV320WX2-201
LED backlight: YP 37020575 2 * 36 led
MainBoard: T.VST59S.81
IC MainBoard: CPU: TSUMV59XES, FLASH: GD25Q32
Tuner: CDT-3NP5I1-10
Technical Specifications H-LED32V13
HYUNDAI H-LED32V13
General repair guidelines for TV LCD LED
Repair of the HYUNDAI H-LED32V13 TV should begin with a careful external examination of all its components and modules. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
Malfunctions of the power module can be expressed in different ways, for example, the HYUNDAI H-LED32V13 does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
If the HYUNDAI H-LED32V13 has no image, there is sound and the channels are switched, there is a possibility of a malfunction in the circuit of the backlight LEDs of the HV320WX2-201 panel, or their power converter - LED drivers. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main PSU.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
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.
The motherboard T.VST59S.81 must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary.
Board repair and replacement of CPU chips: TSUMV59XES, FLASH: GD25Q32 are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
The malfunction of the tuner CDT-3NP5I1-10 is established after checking the software and all the supply voltages at its terminals, including the varicap supply voltage (30-33V).
Owners and users of the HYUNDAI H-LED32V13 TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!

FIRMWARE FOR SPI FLASH  ----------->   HYUNDAI H-LED32V13, Main T.VST59S.81, Panel HV320WX2-201



 In the event of a failure in the software of the SPI FLASH chip from Winbond, we recommend that you replace it with a new one. Sometimes faulty SPI Winbond microcircuits can be restored for a while after a soldering station is heated by a hairdryer. Usually this is enough to read its contents.
Repair MainBoard
The appearance of MainBoard T.VST59S.81 is shown in the figure below:
T.VST59S.81
It is advisable to start repairing the T.VST59S.81 motherboard based on the TSUMV59Xxx multifunction processor by checking the performance of linear voltage stabilizers or voltage converters necessary to provide power to the processor nodes - 1.2V core power, DDR 1.8V memory and Stand-by 3.3V mode . If there is no image, but the display backlight is working properly, you should check the power supply voltage of the LCD panel 5V or 12V, depending on the type of panel used.
T.VST59S.81 can be used on TVs:
DNS M32AM8 (Panel V320BJ6-PE1 Rev. C1), HYUNDAI H-LED32V13 (Panel HV320WX2-201).
Main features of the HYUNDAI H-LED32V13 device:
Installed matrix (LED-panel) HV320WX2-201.
The required supply voltage for all nodes of the HYUNDAI H-LED32V13 TV provides a switching power supply.
MainBoard - the main board (motherboard) is a T.VST59S.81 module, using CPU chips: TSUMV59XES, FLASH: GD25Q32 and others.
The tuner CDT-3NP5I1-10 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: BOE
Model: HV320WX2-201
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AFFS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Transmissivity: 6.6% (with Polarizer)
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 8 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
HYUNDAI H-LED32V13 TV with HV320WX2-201 LCD, 32 "(81 cm) diagonal size in 16: 9 format. The required screen brightness of 400 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1200: 1. Edge LED backlighting is implemented 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 of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems . Emah PAL, SECAM, 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, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides 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 x2, audio x2, component, SCART, VGA, HDMI x3, 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.
The power consumed by the TV in the operating mode from the network is 65 watts.
Overall dimensions: with stand 771x538x211 mm, without stand 771x495x50 mm.
TV Weight: 8.5 kg.
Attention! The HV320WX2-201 HYUNDAI H-LED32V13 LED TV panel 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.