TELEFUNKEN LEDModel: TF-LED32S26
Chassis / Version: TP.VST59S.PC1
Panel: MT3151A04-1-XC-9 // E32-8A00 (CS) ST3151A94-3
LED backlight: JS-LB-S-JP32E8A-145A20A
T-CON: ST3151A94-3
LED driver (backlight): with integrated MainBoard
PWM LED driver: OB3350CP
Power supply (PSU): integrated into the MainBoard
PWM power: PWM SOT23-6
MainBoard: TP.VST59S.PC1
MainBoard IC: Flash SPI: GD25Q32BS, SOUND: TPA3110LD2
Tuner: NoName
TELEFUNKEN TF-LED32S26
General Repair Instructions for LCD LCD TVs
Possible malfunctions
- The TELEFUNKEN TF-LED32S26 television does not switch on at all. The indicator lights do not light up and do not flash. The remote control TV and buttons on the control panel do not respond.
In such cases, the common power source, the AC / DC voltage converter, which is combined with the elements of the main board TP.VST59S.PC1, is often defective. It is necessary to measure its output voltages and, in case of absence, to check the correct operation of the power switches and rectification diodes in the converters in order to avoid any faults.
In the event of diode failures in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages and during a short-circuit in the power elements of the primary circuit, the network fuse and / or the current sensor at the source of the key usually breaks.
Mos-Fet switches, used in switch mode power supplies, sometimes fail due to a malfunction of any other element that could put it out of service in key mode or create an excess of the maximum admissible parameters of the switch. These can be elements supplying the PWM controller, frequency adjustment or damping circuits, or negative feedback elements in the stabilization circuit. PWM SOT23-6 The PWM controllers, in the absence of visible damage or an obvious short circuit between the terminals, are checked by replacing them with new ones or by operating obviously.
- There is no picture, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn it on and immediately disappears.
Usually, in such cases, a malfunction is detected in the backlight nodes of the LED panel. This can be due to both the power supply of the LEDs, their operating state (failure or breakage) and the violation of the contact connections of the LED strips.
It is impossible to control the line of LEDs connected in series without a special current source. For this reason, it is not prudent to use voltage sources higher than 12V. Then just open the panel and check each indicator separately. Usually, Chinese multimeters powered by 9V will light a single 3 volt LED if you connect the probes in the forward direction, the red probe to the anode and the black to the cathode. 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 or broken in short circuit.
- The front panel indicator flashes, the television does not switch on in operating mode, it does not respond to the remote control.
Repairing or diagnosing the TP.VST59S.PC1 motherboard should start by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you must update or replace the software (software). In some cases, to repair the MB (SSB) card, it may be necessary to replace the chips - Flash SPI: GD25Q32BS, SOUND: TPA3110LD2 with new ones or which obviously work. In cases where BGA technologies are used, faults are generally located by the heating method.
If there is no TV reception but the TV works properly from external devices, it is first necessary to check the voltage of the NoName tuner and update the software. The pulses from the I2C bus must be checked with an oscilloscope.
Warning! For users and owners of TF-LED32S26 televisions who do not have the appropriate qualifications, knowledge and experience, we strongly advise you against any attempt at self-repair to avoid negative consequences which could lead to complete non-repairability of the device. 'apparatus.
FIRMWARE SPI FLASH ----------------> TELEFUNKEN TF-LED32S26, Main: TP.VST59S.PC1, Panel: E32-8A00 ( CS)ST3151A94-3
The appearance of MainBoard TP.VST59S.PC1 is illustrated in the figure below:TP.VST59S.PC1
TP.VST59S.PC1 can be used in televisions:
FUSION FLTV-40K62 (Panel 720p HD 1366x768), HYUNDAI H-LED32V26 (Panel ST3151A04-3 / (CS)), TELEFUNKEN TF-LED32S26 (Panel MT3151A04-1-XC-9), TELEFUNKEN TF-LED32S11 (Panel E32-9100).
Main characteristics of the TELEFUNKEN TF-LED32S26 device:
Installed matrix (LED panel) MT3151A04-1-XC-9 or E32-8A00 (CS) ST3151A94-3.
The matrix control uses the synchronization controller (T-CON) ST3151A94-3.
To supply the backlight indicators, a converter is used, associated with the main board TP.VST59S.PC1, controlled by the OB3350CP PWM controller.
The power module is combined with the MainBoard and is manufactured in accordance with the Flyback AC / DC voltage conversion circuit using PWM SOT23-6 microcircuits.
MainBoard - the motherboard (motherboard) is a TP.VST59S.PC1 module using SPI Flash chips: GD25Q32BS, SOUND: TPA3110LD2 and others.
The NoName tuner provides television reception and channel tuning.