Technical description and composition of the TV SUPRA STV-LC22500FL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC22500FL
Chassis / Version: ver.V2N02
Panel: LC215DT5A / HK215WLEDM-DH67H
LED backlight: RF-HK215B14-1504S-04
LED driver (backlight): integrated into PSU
PWM LED driver: OB3350CP
Power Supply (PSU): HKL-240101 - B
PWM Power: OB2273 (PWM SOT23-6)
MainBoard: CV59L-E
IC MainBoard: CPU: TSUMV59XU-Z1, SPI Flash: GD25Q32
Tuner: CDT-3NP5I1-10
STV-LC22500FL Specifications
SUPRA STV-LC22500FL
General recommendations for TV LCD LED repair
Repair of the SUPRA STV-LC22500FL TV should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for the repairman can be a significant clue in assumptions about the causes and consequences of a malfunction.
If the power supply module fails, external manifestations may be different, for example, SUPRA STV-LC22500FL does not turn on at all and there is no indication of the control lamps on the front panel. With the same symptoms, the regulator (converter) of the control processor power supply may be faulty. In the absence of swollen capacitors of the secondary rectifier filter, diagnostics of the power supply should begin with checking the fuse and, if it breaks, it is necessary first of all to check all power semiconductor elements of the primary circuit - diodes and transistors for the likelihood of an avalanche or thermal breakdown.
The reasons for the breakdown of the power switch in switching power supplies (SMPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of a PWM controller microcircuit or breaks in resistors in its strapping.
If there is no image when you turn on the SUPRA STV-LC22500FL, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the LC215DT5A panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
A malfunction in the backlight circuits often occurs due to an open circuit in the power supply circuit of the LED lines. It is required to disassemble the panel and check the LEDs themselves, the ration of their outputs, as well as the reliability of the connections in the connectors and the ration of the connector pins.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
Diagnosis and repair of the CV59L-E motherboard is carried out by checking the performance of the stabilizers or power converters of the module chips. In some cases, a software update is required.
In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CPU: TSUMV59XU-Z1, SPI Flash: GD25Q32 with new or known good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before changing the tuner CDT-3NP5I1-10, if it is not possible to tune to television channels, make sure that there are supply voltages, including varicap power supply (30-33V), which must be measured on the corresponding tuner pins.
It should be remembered! Attempts to repair the SUPRA STV-LC22500FL TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC22500FL, Main: CV59L-E, Panel: LC215DT5A HK215WLEDM-DH67H
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC22500FL, Main: CV59.11, Panel: LM215DA-T01
SUPRA STV-LC22500FL Version V1M01; Panel: LM215DA-T01 PANDA, MainBoard: CV59.11 (CPU: TSUMV59XE-Z1, SPI Flash: GD25Q32, Đ¢uner: CDT-3NP5I1-10), PSU: HKL-240101 (OB2273, OB3350CP).The MainBoard CV59L-E is shown in the figure below:
The MainBoard CV59L-E uses a multi-function microprocessor type TSUMV59 with an integrated scaler and an external SPI Flash ROM type 25Q32 (4Mb).
It is advisable to start repairing the motherboard by checking the + 5V voltage converters and the + 1.2V processor core power supply, as well as the + 3.3V linear voltage regulators and the 1.8V processor DDRAM internal power supply.
In the case of a working display backlight and the absence of an image, it is necessary to check the power of the panel (depending on the type, + 5V or + 12V), which can be measured directly on the LVDS connector. If, with all the supply voltages present, the TV does not go into operation, does not respond to the Remote Control and control buttons, you should update the SPI Flash software.
CV59L-E can be used in TVs:
FUSION FLTV-24L31B (Panel V236BK1-LE1 REV.C5), FUSION FLTV-22L31B (Panel LC215DT5A), SUPRA STV-LC24500WL (Panel V236BJ1-LE1 Rev.C2), SUPRA STV-LC22500FL (Panel LC215DT5A / HK215WLEDM-DH67H).
External view of the power supply
Main features of the SUPRA STV-LC22500FL device:
The matrix (LED panel) LC215DT5A / HK215WLEDM-DH67H is installed.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the OB3350CP PWM controller.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC22500FL TV is carried out by the HKL-240101 power supply module, or its analogues using OB2273 microcircuits (PWM SOT23-6).
MainBoard - the main board (motherboard) is a CV59L-E module, using CPU chips: TSUMV59XU-Z1, SPI 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: PANDA
Model: LC215DT5A
Type: a-Si TFT-LCD, CELL
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare, Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Contrast Ratio: 600: 1
Display Colors: 16.7M (8-bit)
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
LED TV SUPRA STV-LC22500FL with LCD display LC215DT5A, diagonal size 22 "(56 cm) 16: 9. The required screen brightness of 250 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 60,000: 1 is achieved by special control of the LEDs depending on the illumination of the areas in the scene.This model uses an LED-panel with an edge LED backlighting - Edge LED.Possibilities of the TV provide viewing of broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphics decomposition at 1080p (Full HD). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, MKV, JPEG.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, SCART, RGB, VGA, HDMI, USB. 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, 1920x1080.
The power consumed by the TV in operating mode from the network is 30 W.
Overall dimensions: With stand 518x369x160 mm, Without stand 518x321x74 mm.
Attention! Panel LC215DT5A / HK215WLEDM-DH67H LED TV SUPRA STV-LC22500FL 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.