Technical description and composition of the SUPRA STV-LC19660WL TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC19660WL
Chassis / Version: 5800-A8M280-0P10
Panel: E185SG01
LED driver (backlight): integrated into PSU
PWM LED driver: OB3362HP
Power Supply (PSU): 168P-P19EQB-W1
PWM Power: PWM SOT23-6
MainBoard: 5800-A8M280-0P10
IC MainBoard: Flash 25Q32B
Tuner: ET-9Z2E-CF106H
Technical Specifications STV-LC19660WL
SUPRA STV-LC19660WL
General recommendations for TV LCD LED repair
Possible malfunctions
- The SUPRA STV-LC19660WL TV does not turn on and does not show any signs of turning on, it does not respond to the control buttons or the remote control.
In such cases, the fault should be looked for primarily in the 168P-P19EQB-W1 power supply module. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the mains fuse and, less often, the current sensor at the source of the key are most often cut off.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM regulator, in frequency-setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) PWM SOT23-6 are usually checked by replacing them with new ones, or knowingly working.
- No picture, sound, all other TV functions work. When turned on, the image may sometimes appear for a second.
Usually, in such cases, a malfunction is detected in the nodes of the backlight of the LED panel. The reason may be a break in the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the thong connectors,
It is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light a single 3V LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the 5800-A8M280-0P10 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, update or replace the software (software). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair it, you should check its elements - Flash 25Q32B and replace the failed chips with new ones. Some malfunctions may be associated with the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
Before changing the tuner ET-9Z2E-CF106H, if it is not possible to tune to television channels, you should make sure that there are supply voltages, which must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be monitored with an oscilloscope
Owners of the STV-LC19660WL TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair it yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC19660WL, Main: 5800-A8M280-OP10, Panel: E185SG01
The MainBoard 5800-A8M280-0P10 is shown in the figure below:5800-A8M280-0P10
5800-A8M280-0P10 can be used in TVs:
AIWA 32LE6110 (Panel T320HVN01.V2), AIWA 24LE6110 (Panel V236H1-LE4 Rev.C1), HYUNDAI H-LED29V17 (Panel V290BJ1-PE1 VRev.C2), SUPRA STV-LC24660FL (Panel HM236WU3-100), SUPRA STV-LC19660WL (Panel E185SG01), SUPRA STV-LC19663WL (Panel E185SG02).
Main features of the SUPRA STV-LC19660WL device:
Installed matrix (LED panel) E185SG01.
To power the backlight LEDs, a converter combined with a power supply is used, controlled by the OB3362HP PWM controller.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC19660WL TV is carried out by the 168P-P19EQB-W1 power module, or its analogs using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a 5800-A8M280-0P10 module, using Flash 25Q32B chips and others.
The ET-9Z2E-CF106H tuner provides TV reception and channel tuning.
LED TV SUPRA STV-LC19660WL with LCD display E185SG01, diagonal size 19 "(48 cm) 16: 9 format. This model uses a LED panel with the end position of the backlight LEDs - Edge LED. You can watch programs and movies and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in standards 480i, 480p, 576i, 576p, 720p , 1080i, 1080p Supported media file formats: MP3, MPEG4, MKV, JPEG.
The power of the acoustic system of sound 6 W (2x3 W) provide two speakers. The audio processing system NICAM STEREO is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI, USB x2. A headphone output 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.
Dimensions: With stand 794x561x204 mm, Without stand 794x499x90 mm.
Attention! The E185SG01 panel of a SUPRA STV-LC19660WL 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.