Technical description and composition of the HYUNDAI H-LCD1910 TV, panel type and applicable modules. The composition of the modules.Hyundai
Model: H-LCD1910
Chassis / Version: Shinge SG24LT
Panel: HT235F01-100
T-CON: HT236F01 BX0.1 47-600302 NT71109FG-6010 G167122 9S28 I7514HS 17075E
Inverter (backlight): WPE IVA220401 Rev.4
PWM Inverter: TL4940W 6428 89C1Z
Trans Inverter: EEL19-049
Power Supply (PSU): Adapter + 12V, 5A
MainBoard: B.LT716B 8497
IC MainBoard: W9864G6IH-6, ISSI936 432A 26L, TDA8890 H1 / N1B, ISSI945 402B-2GL1, MP1430DN, TDA1517P
Tuner: TDQ-6F6 / T1260W
Control: SG24LT
Technical Specifications H-LCD1910
HYUNDAI H-LCD1910
General recommendations for repairing TV LCD
Repair of the HYUNDAI H-LCD1910 Shinge SG24LT must begin with the diagnosis of the malfunction and a thorough inspection of its external and internal components, including the case ones. Often, according to certain external signs, the repairman can draw some conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
Sometimes the HYUNDAI H-LCD1910 Shinge SG24LT TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most probable cause of the malfunction is the failure of the general adapter + 12V, 5A power supply module. In this case, first of all, it is necessary to check the fuse at the mains input. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a PWM controller in a single chip, are reliable enough and rarely fail for no reason. The reasons for the breakdown of the key should be sought 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.
It is somewhat more difficult to look for a malfunction in the converter of the power module with an active KKM (power factor corrector).
If the HYUNDAI H-LCD1910 Shinge SG24LT does not have an image, but there is sound and the TV is controlled from the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors.
Repair of the WPE IVA220401 Rev.4 inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety when the lamps are depressurized, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
In such cases, special care should be taken during diagnostics, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
Repair of the B.LT716B 8497 motherboard should begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its chips W9864G6IH-6, ISSI936 432A 26L, TDA8890 H1 / N1B, ISSI945 402B-2GL1, MP1430DN, TDA1517, Tuner: TDQ-6F6 / T1260W and other possible defective components.
Owners of the H-LCD1910 Shinge SG24LT TV are recommended to repair only qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
The appearance of the MainBoard B.LT716B is shown in the figure below:MainBoard B.LT716B includes a TDA8890H1 processor, a scaler (under the radiator), ROM W9864G61H-6, SPI FLASH 520Kb and EEPROM 24C32.
It is advisable to start the repair of the motherboard by checking all voltage converters and linear stabilizers necessary to provide power to the nodes and chips in the operating and standby modes. Check the power of the LCD panel (depending on the type, + 5V or + 12V), it is convenient to measure directly on the LVDS connector. If, in the presence of the necessary supply voltage, the TV does not exit Stand-by mode, does not respond to the Remote Control and control buttons, you should update the software (firmware) SPI Flash.
B.LT716B can be used in TVs:
HYUNDAI H-LCD1910 (Panel HT235F01-100), HYUNDAI H-LCDVD2200 (Panel LTM220MT05), HYUNDAI H-LCD2400 (Panel M236H1-L08 REV.C1).
Main features of the HYUNDAI H-LCD1910 device:
Installed matrix (LCD panel) HT235F01-100.
The matrix control uses the Timing Controller (T-CON) HT236F01.
A WPE inverter is used to power the backlight, controlled by a TL4940W 6428 89C1Z PWM controller. The transformer EEL19-049 is installed in the inverter converter.
To power all the internal components of the HYUNDAI H-LCD1910 TV, an external adapter + 12V, 5A type source is used.
MainBoard - the main board (motherboard) is a B.LT716B module, using microcircuits W9864G6IH-6, ISSI936 432A 26L, TDA8890 H1 / N1B, ISSI945 402B-2GL1, MP1430DN, TDA1517P and others.
The TDQ-6F6 / T1260W tuner provides TV reception and channel tuning.
HYUNDAI H-LCD1910 TV with HT235F01-100 LCD, 19 "(48 cm) diagonal 16:10 format. Screen brightness of 300 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast as the ratio of maximum brightness to the minimum is 1000: 1. It is possible to view images in high quality HD at a resolution of 1440x900 pixels in the standard for 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 happens in with Standards 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the acoustic system of sound 6 W (2x3 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, S-Video, SCART, VGA, HDMI. 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.
The power consumed by the TV in the operating mode from the network is 48 watts.
Overall dimensions: 470x400x180 mm.
TV mass: 6 kg.
Attention! HYUNDAI H-LCD1910 LCD TV panel HT235F01-100 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!