Technical description and composition of the HYUNDAI H-LED32V26 TV, panel type and applicable modules. The composition of the modules.Hyundai
Model: H-LED32V26
Panel: ST3151A04-3 / (CS)
T-CON: ST3151A04-3 VER.2.5
Inverter (backlight): integrated into MainBoard
PWM Inverter: OB3350CP
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: TP.VST59S.PC1
IC MainBoard: SPI Flash: 25q3, SOUND: TPA3110LD2
Tuner: NoName
Technical Specifications H-LED32V26
HYUNDAI H-LED32V26
General recommendations for repairing TV LCD
Repair of the HYUNDAI H-LED32V26 TV should begin with a careful external examination of all its components and modules. Many visible changes in the state of the elements make it possible to determine the future direction of the troubleshooting. 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.
In the case when the H-LED32V26 does not turn on, does not respond to the remote control and buttons on the front panel, does not blink lights and does not show any signs of operability, the power supply unit is probably defective in this case. When repairing it, 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 rectifier bridge of the mains voltage and the power key (s) of the converter. The complete inoperability of the power supply unit can be caused by a short circuit in the power elements in the primary circuit, followed by an open fuse, or a short circuit in the loads.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
If the HYUNDAI H-LED32V26 TV does not have an image, but there is sound, you should make sure that the power converter for the backlight lamps (inverter) is working. It is also necessary to check the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply) for excessive ESR. It should be remembered that when the protection is turned off in order to diagnose a malfunction, there is always a risk of failure of the power elements of the inverter. After repair, it is necessary to restore all standard converter protection circuits.
The TP.VST59S.PC1 motherboard should 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. Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements SPI Flash: 25q3, SOUND: TPA3110LD2 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.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
The appearance of MainBoard TP.VST59S.PC1 is shown in the figure below:TP.VST59S.PC1
TP.VST59S.PC1 can be used in TVs:
FUSION FLTV-40K62 (Panel 720p HD 1366x768), HYUNDAI H-LED32V26 (Panel ST3151A04-3 / (CS)), TELEFUNKEN TF-LED32S26 (Panel MT3151A04-1-XC-9), TELEFUNKEN TF-LED32S11 (Panel E32-9100).
Main features of the HYUNDAI H-LED32V26 device:
Installed matrix (LCD panel) ST3151A04-3 / (CS).
The matrix control uses the Timing Controller (T-CON) ST3151A04-3.
To power the backlight, a converter is used, combined with the main board TP.VST59S.PC1, 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 PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a module TP.VST59S.PC1, using chips SPI Flash: 25q3, SOUND: TPA3110LD2 and others.
The NoName tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CSOT
Model: ST3151A04-3
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: HVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.75% (with Polarizer)
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
HYUNDAI H-LED32V26 TV with ST3151A04-3 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 3000: 1. Edge LED backlighting is implemented in the LED-panel of this TV - Edge LED. High quality HD images can be viewed 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 PAL, SECAM, NTSC, graphic processing and digital signal generation are performed in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, 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, 1360x768.
Overall dimensions: 742x485x150 mm.
TV mass: 6 kg.
Attention! HYUNDAI H-LED32V26 LED TV panel ST3151A04-3 / (CS) 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.