Technical description and composition of the TELEFUNKEN TF-LED32S58T2S TV, panel type and modules used. The composition of the modules.TELEFUNKEN LED
Model: TF-LED32S58T2S
Chassis / Version: MSA6285-ZC01-01
Panel: V320BJ-Q01
LED driver (backlight): integrated into MainBoard
PWM LED driver: OB3363QP
Power Supply (PSU): integrated into MainBoard
MainBoard: MSA6285-ZC01-01
IC MainBoard: SPI Flash: MX25L4006E, DC-DC: MSH6000A, RT7240
Tuner: NoName
TF-LED32S58T2S Specifications
TELEFUNKEN TF-LED32S58T2S
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- TELEFUNKEN TF-LED32S58T2S TV does not turn on. There are no signs of operability. The indicators on the front panel do not light up or blink, the TV does not respond to the remote control and control buttons.
In such cases, the common power supply is often faulty - the AC / DC mains voltage converter, which is combined with the elements of the MSA6285-ZC01-01 main board. Its output voltages should be measured, and if they are absent, check the serviceability of the power switches of the converters and rectifier diodes for the probability of a short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can operate in an emergency mode in a short-circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse is usually cut off.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM), if they do not have visible damage to the case and an outright short circuit between the terminals, are usually checked by replacing.
- There is no picture, but there is sound and reaction to the remote control. Or, for a second, the image may appear immediately after switching on.
As a rule, in such cases there is no display backlight. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally a current source. By opening the panel, you can check each LED separately. Typically, Chinese multimeters light up one 3-volt LED slightly if the probes are connected to it in the forward direction. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or broken into the K / Z.
- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the MSA6285-ZC01-01 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Complex repair of MB (SSB) is possible only in a service center with the necessary equipment. Checking or replacing SPI Flash: MX25L4006E, DC-DC: MSH6000A, RT7240 requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
If there is no reception of TV channels, but the TV is working properly from external devices, first of all, you need to check the supply voltage of the NoName tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Attention! Users and owners of TF-LED32S58T2S TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting to repair themselves in order to avoid negative consequences that may lead to complete non-repairability of the device.
To reduce the backlight current in LED drivers with OB3363QP (16 pin) controller, you should proportionally increase the total resistance of the resistors from pin 5 (ISET) to the case.
The appearance of the MainBoard MSA6285-ZC01-01 is shown in the figure below:MSA6285-ZC01-01
Main features of the TELEFUNKEN TF-LED32S58T2S device:
Installed matrix (LED panel) V320BJ-Q01.
To power the backlight LEDs, a converter combined with the MSA6285-ZC01-01 main board is used, controlled by the OB3363QP PWM controller.
The power module is combined with the MainBoard and is made according to the AC / DC flyback converter circuit.
MainBoard - the main board (motherboard) is an MSA6285-ZC01-01 module, using SPI Flash chips: MX25L4006E, DC-DC: MSH6000A, RT7240 and others.
Tuner NoName provides reception of television programs and tuning to channels.
TV TELEFUNKEN TF-LED32S58T2S with LCD V320BJ-Q01, diagonal size 31.5 "(80 cm) 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 5000 : 1. The technology of manufacturing the screen of this TV model is realized with LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic resolution 720p (HD Ready).
TF-LED32S58T2S TV has built-in SMART software and pre-installed Android operating system. Internet connection can be made via Wi-Fi wireless connection. Supported media file formats: MP3, MPEG4, Xvid, MKV, JPEG.
Speaker power 16 W (2x8 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, HDMI x2, USB x2, Ethernet (RJ-45), Wi-Fi. A headphone output is provided.
The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: with stand 730x470x210 mm, without stand 730x433x70 mm.
TV weight: 4.7 kg.
Attention! Panel V320BJ-Q01 LED TV TELEFUNKEN TF-LED32S58T2S 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.