Technical description and composition of the TV SUPRA STV-LC2235FL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC2235FL
Panel: M215HW01
LED driver (backlight): integrated into MainBoard
PWM LED driver: A8504
Power Supply (PSU): PW52057 B
MainBoard: JUG7.820.699-2
IC MainBoard: CPU: TSUMV26KE-LF, EeProm: 24LC32B, Flash: 25F40-100, Audio: YD1517D
Tuner: CDT-3LC4 1-00
Control: Service Login: SOURCE 3138
Technical Specifications STV-LC2235FL
SUPRA STV-LC2235FL
General repair guidelines for TV LCD LED
SUPRA STV-LC2235FL, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. Often, according to the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. 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.
If the PW52057B power supply module fails, the external manifestations may be different, for example, the SUPRA STV-LC2235FL does not turn on at all and there is no indication of the indicator lights on the front panel. With the same symptoms, the stabilizer (converter) of the power supply to the control processor may be faulty. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
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 checked by replacing it with a known good one.
In cases where the SUPRA STV-LC2235FL TV has lost its image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the M215HW01 panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
When trying to identify a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Repair or diagnostics of the JUG7.820.699-2 motherboard should begin by checking the stabilizers or power converters of its microcircuits. If necessary, update the software (software).
Board repair and replacement of CPU chips: TSUMV26KE-LF, EeProm: 24LC32B, Flash: 25F40-100, Audio: YD1517D are carried out with the necessary equipment, and the corresponding element base. Malfunctions associated with the application of the soldering technology of the BGA processor can be localized by the heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the varicaps of the tuner CDT-3LC4 1-00, which is usually within 30-33V, as well as other supply voltages at the terminals of the tuner.
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.
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC2235FL, Main JUG7.820.699-2, Panel M215HW01
The appearance of the MainBoard JUG7.820.699-2 is shown in the figure below:JUG7.820.699-2JUG7.820.699-2 can be used on TVs:
AKAI LEA-22C05P (Panel CLAA215FA04), SUPRA STV-LC2435FL (Panel V236H1-LE2 Ver C1), SUPRA STV-LC2235FL (Panel M215HW01), SUPRA STV-LC2455FL (Panel V236H1-LE2), SUPRA STV-LC1935WL (Panel M185XW01 V6), SUPRA STV-LC2255FL (Panel M215HW01 V6).
The appearance of the power supply
Main features of the SUPRA STV-LC2235FL device:
Installed matrix (LED-panel) M215HW01.
To power the backlight LEDs, a converter is used, combined with the main board JUG7.820.699-2, controlled by the A8504 PWM controller.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC2235FL TV is carried out by the PW52057 power module, or its analogues.
MainBoard - the main board (motherboard) is a JUG7.820.699-2 module, using CPU chips: TSUMV26KE-LF, EeProm: 24LC32B, Flash: 25F40-100, Audio: YD1517D and others.
The tuner CDT-3LC4 1-00 provides the reception of television programs and tuning to channels.
Information from an alternative source:
SUPRA STV-LC2235FL Version V1J09
Panel Type (Matrix): M215HW01-V6
Motherboard: JUG7.820.699-2 CH-L07A-V1.22, TSUMV26KE-LF, Tuner: CDT-3LC4I1-00
PSU & Invertor: PW52057B
Additional technical information about the panel:
Brand: AUO
Model: M215HW01 V2
Type: a-Si TFT-LCD, Panel
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)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 3.8 / 1.2 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
LED TV SUPRA STV-LC2235FL with LCD M215HW01, diagonal size 22 "(56 cm) 16: 9 format. The required brightness of the screen is 250 cd / m² LED backlight LED. Contrast - the ratio of maximum brightness to minimum is 3000: 1. This model uses an LED panel with the end-face LEDs - Edge LED. The TV's capabilities include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the sound system 4 W (2x2 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, component, 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 35 watts.
Overall dimensions: 517x435x145 mm.
TV Weight: 4.5 kg.
Attention! The M215HW01 panel of a SUPRA STV-LC2235FL 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.