TV repair TELEFUNKEN TF-LED22S3TELEFUNKEN LED
Model: TF-LED22S3
Chassis / Version: T.VST59.62
Panel: M215HGE-P02
T-CON: CX215LEDM
LED pilot (backlight): CX_8573_VER 2.0
Power supply (PSU): 12V adapter
Main Board: T.VST59.62
Mainboard: TSUMV59XU-Z1 A7MK716C, 25Q32BSIG (GD25Q32 SOIC-8), TDA-1517P, TPS54329
Tuner: CDT-3NP5L1-10
- The TELEFUNKEN TF-LED22S3 TV does not turn on at all. The control lights do not light up or blink. On the remote control and the buttons on the control panel do not respond.
In this case, the fault must be detected first in the power supply module of the adapter.
This TV model is equipped with a 12V external power adapter, which the owner can buy himself. Sometimes it is advisable to repair it, but sometimes it is advisable to open it and eliminate the simple defects typical of the IPS system. Then, we recommend that you measure its output voltages and, if they are absent, check the health of the current switches and converter rectifier diodes to detect any probable short circuit.
In the event of failures in the secondary circuits, the converter can operate in short-circuit mode in emergency mode and in the event of a short-circuit in the power elements of the primary circuit, the main fuse usually blows.
The failure of the Mos-Fet keys used in the drawn sources is often caused by malfunctions of other elements, such as power supply, frequency adjustment, register, etc., as well as elements of the negative stabilization feedback. The PWM chip can also cause a malfunction of the converter power switch and is checked by replacement.
- There is no picture, there is sound, there is a reaction to the remote control. Or immediately after turning it on for one second, the image can appear and disappear immediately.
In this case, the most likely malfunction of the LED panel backlight elements. This may be due to both the power supply of the LEDs, their operating status (failure or breakage) and the violation of the contact connections of the LED strips.
When diagnosing, it is necessary to take into account the fact that it is impossible to check the opening in the LED line chain without removing the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of several tens of volts is required and, ideally, a power source. By opening the panel, each LED can be checked separately. Usually, Chinese multimeters light a single 3-volt LED if you connect probes in the forward direction. In the case of two 6-volt LEDs, the PN junction of its emergency zener diode can be used as a health indicator. In the event of a malfunction of the LED, its Zener diode will either be cut off or broken in a short circuit.
- The front panel indicator light flashes, the TV does not turn on in operating mode, it does not respond to the remote control.
Repair or diagnosis of the T.VST59.62 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you must update or replace the software (software). Complex MB repair (SSB) is only possible under the conditions of a service centre with the necessary equipment. Verification or replacement of components requires training and professional skills to repair modules at the component level. Heating can sometimes be used to diagnose problems related to the use of BGA brazing technologies.
If the TV normally operates from external devices, but does not tune to TV channels, the CDT-3NP5L1-10 tuner may not work properly. In this case, you must first make sure that there are supply voltages at the corresponding terminals. You must also ensure that the tuner and processor can exchange data via the I2C bus. Sometimes, the cause of the inoperability of the tuner may be a software failure.
Attention! For users and owners of TF-LED22S3 TVs who do not have the appropriate qualifications, knowledge and experience, we strongly advise against trying self-repair in order to avoid negative consequences that could lead to total non-use of the unit.
SCHEMATIC MANUAL ----------------> TELEFUNKEN TF-LED22S3 T.VST59.62B
The appearance of MainBoard T.VST59.62 is shown in the figure below:
T.VST59.62
It is recommended to start repairing the T.VST59.62 motherboard based on the TSUMV59Xxx multifunction processor by checking the performance of the linear voltage stabilizers or voltage converters required to power the processor nodes - basic power supply 1.2V, DDR memory 1.8V and standby mode 3.3V . If there is no image, but the backlight is working properly, you must check the power supply voltage of the 5V or 12V LCD panel, depending on the type of panel used.
T.VST59.62 can be used on TV sets:
Akai LEA-22V21M (Panel A215ED1DA3-1), ERISSON 22LEN18 (Panel M215HGJ-L21), ERISSON 16LEN18 (Panel N156BGE-L11 Rev.C1), ERISSON 24LEN18 (Panel M236HGE-L20), Fusion FLTV-16L10B (Panel T156LL10-AW4), FUSION FLTV-24T9 (Panel M240HW01 V.B), FUSION FLTV-16T9 (Panel B156XTN02), FUSION FLTV-16T9D (Panel T156LL10-AW4), HYUNDAI H-LED19V13 (Panel CX185LEDM ), SUPRA STV-LC19811FL (Panel M185XTN01.3), SUPRA STV-LC19820WL (Panel LM185WH2), SUPRA STV-LC22820FL (Panel LS215AFTNM), SUPRA STV-LC18250WL (Panel B173HW02 V.1), SUPRA STV-LC22810FL (Panel M215HGE-L21 Rev.C1), SUPRA STV-LC16810WL (Panel B156RW01 V.1), SUPRA STV-LC18251FL (Panel N173HGE-L11 Rev. C1), SUPRA STV-LC22811FL (Panel 1080p Full HD 1920x1080), SUPRA STV-LC1982WL (Panel 1080p Full HD 1920x1080), TELEFUNKEN TF-LED22S3 (Panel M215HGE-P02).
Main features of the TELEFUNKEN TF-LED22S3 device:
Matrix installed (LED panel) M215HGE-P02.
Matrix control uses the synchronization controller (T-CON) CX215LEDM.
The CX_8573_VER light driver is used to power the backlight lights.
To power all the internal nodes of the TELEFUNKEN TF-LED22S3 TV, an external 12V adapter is used.
MainBoard - The motherboard (motherboard) is a T.VST59.62 module, using TSUMV59XU-Z1 A7MK716C, 25Q32BSIG (GD25Q32 SOIC-8), TDA-1517P, TPS54329 and others processors.
The CDT-3NP5L1-10 tuner allows you to receive television programs and tune channels.
Additional technical information on the panel:
Brand: CHIMEI INNOLUX
Model: M215HGE-P02
Type: a-Si TFT-LCD, CELL
Diagonal size: 21.5 inches
Resolution: 1920x1080, FHD
Display mode: TN, normally white,
active transmissive zone: 476.64x268. 11 mm
Surface: anti-reflective (Haze 25%), hard coating (3H)
Transmissibility: 6.3% (with polarizer)
Contrast ratio: 1000: 1
Display colors: 16.7 M (8 bits)
Response time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Signal interface: LVDS (2 channels, 8 bits),
Voltage 30 pins: 5.0V