Technical description and composition of the TELEFUNKEN TF-LED32S2 TV, panel type and modules used. The composition of the modules.TELEFUNKEN LED
Model: TF-LED32S2
Chassis / Version: TP.VST59S.PB813
Panel: LSC320AN02
LED backlight: CRH-P32CA3535T030751U-REV1.0
LED driver (backlight): integrated into MainBoard
PWM LED driver: SN510P
MOSFET LED driver: AOD4454
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: TP.VST59S.PB813
IC MainBoard: CPU: TSUMV59XUS, SPI Flash: GD25Q32B, TPA3110
Tuner: RAFAEL Micro R840
TF-LED32S26 Specifications
TELEFUNKEN TF-LED32S2
General recommendations for TV LCD LED repair
Possible manifestations of defects
- TV TELEFUNKEN TF-LED32S2 does not turn on and does not give any signs of turning on, does not respond to control buttons and to the remote control.
In such cases, the AC / DC converter of the mains voltage, which is combined with the main board TP.VST59S.PB813, is often faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for possible partial or complete breakdown.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the elements of the primary circuit, the mains fuse most often breaks off immediately and, less often, the current sensor in the source of the key.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers PWM SOT23-6, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.
- There is no picture, there is sound, it reacts to the remote control, the channels are switched. In some cases, the image appears when turned on and disappears immediately.
As a rule, in such cases there is no display backlight. The reason may be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
When trying to detect 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.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.
Repair or diagnostics of the TP.VST59S.PB813 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - CPU: TSUMV59XUS, SPI Flash: GD25Q32B, TPA3110 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its pins with the board (indicated by warming up).
If you suspect a malfunction of the RAFAEL Micro R840 tuner, first of all, you need to make sure the software is correct, as well as the presence of the required supply voltage levels and pulses of data exchange with the processor via the I2C bus on the corresponding tuner pins.
Once again, we remind TV users: do not attempt to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair to professionals with sufficient experience in the field of electronic repair.
The appearance of MainBoard TP.VST59S.PB813 is shown in the figure below:TP.VST59S.PB813
The TP.VST59S.PB813 motherboard is combined with a power supply module and is an independent device based on the TSUMV59Xxx multifunctional processor. Repair of such a board must begin with checking the power supply elements, as well as the operability of voltage converters and linear stabilizers required to provide power to certain processor nodes, in particular: core power supply + 1.2V, built-in DDR + 1.8V memory and stand-by mode node. by 3.3V. The supply voltage of the LCD panel is 5V or 12V, depending on the type of panel used, it is necessary to check directly on the LVDS connector.
TP.VST59S.PB813 can be used in TVs:
MYSTERY MTV-3217LW (Panel CX315DLEDM), SHIVAKI STV-32LED6 (Panel HV320WX2-206), SUPRA STV-LC28500WL (Panel ST2751A01-3), TELEFUNKEN TF-LED32S2 (Panel LSC320AN02), TELEFUNKEN TF-LED39S11 (Panel T390HVN04.2 E39-9100).
Main features of the TELEFUNKEN TF-LED32S2 device:
Installed matrix (LED panel) LSC320AN02.
To power the backlight LEDs, a converter combined with the TP.VST59S.PB813 main board is used, controlled by the SN510P PWM controller. The keys of the AOD4454 type are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a TP.VST59S.PB813 module, using CPU chips: TSUMV59XUS, SPI Flash: GD25Q32B, TPA3110 and others.
The RAFAEL Micro R840 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LSC320AN02-0
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%), Hard coating (2H)
Glass Depth: 0.70 + 0.70 mm
Transmissivity: 6.5% (with Polarizer)
Contrast Ratio: 5000: 1
Display Colors: 16.7M (8-bit), CIE1931 69%
Response Time: 20 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
TELEFUNKEN TF-LED32S26 TV with LCD MT3151A05, 32 "(81 cm) diagonal 16: 9. The brightness of the screen is 280 cd / m² provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum brightness, is 3000: 1 The LED panel of this TV is equipped with edge LED backlighting. You can view images in high quality HD at a resolution of 1366x768 pixels in 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM , NTSC Graphic processing and digital signal shaping takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
Speaker power of 16 W (2x8 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI x2, USB. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
Overall dimensions: 742x485x150 mm.
TV weight: 6 kg.
Attention! Panel MT3151A05 LED TV TELEFUNKEN TF-LED32S26 is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.