Wednesday, 18 December 2019

REPAIRING / SERVICING TV TELEFUNKEN TF-LED50S13T2

Technical description and composition of the TELEFUNKEN TF-LED50S13T2 TV, panel type and modules used. The composition of the modules.
TELEFUNKEN LED
Model: TF-LED50S13T2
Chassis / Version: 5800-A6M33G-0P2
Panel: V500HJ1-PE8 (C7) RDL500FY
LED backlight: SW50D06A-ZC14CG-02
LED driver (backlight): integrated into PSU
Power Supply (PSU): L5R012 168P-L5R012-W1 5800-L5R012-W110
MainBoard: 5800-A6M33G-0P20 VER00.05
IC MainBoard: CPU: MSD3463GLAT-W2, SPI Flash: 25Q64BSIG, Audio: TPA3110D2
Tuner: CP + SAT
TF-LED50S13T2 Specifications
TELEFUNKEN TF-LED50S13T2
General recommendations for TV LCD LED repair
Possible malfunctions
- TELEFUNKEN TF-LED50S13T2 TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
In some of these cases, the main switching power supply, the L5R012 module, is faulty. It is necessary to make sure that its output voltages are present and, if they are completely absent, check the power switches and rectifier diodes for a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work 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 often breaks.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM regulator, in frequency-setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) are usually checked by replacing them with new ones, or knowingly working.
- 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.
In such cases, the most likely malfunction of the LED panel backlighting elements. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
To check the LED strips for breakage without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter; a voltage of the order of several tens of volts is required.
- The TV does not turn on, the indicator signals standby or operating mode, or blinks.
Repair or diagnostics of the 5800-A6M33G-0P20 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 CPU elements: MSD3463GLAT-W2, SPI Flash: 25Q64BSIG, Audio: TPA3110D2 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 you suspect a malfunction of the CP + SAT tuner, first of all, you need to make sure that the software is correct, as well as the presence of the required levels of supply voltages and pulses of data exchange with the processor via the I2C bus on the corresponding terminals of the tuner.
We remind users again! Attempts to repair the TELEFUNKEN TF-LED50S13T2 TV without proper qualifications and the necessary experience can lead to its complete non-repairability!


DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   TELEFUNKEN TF-LED50S13T2, Main: 5800-A6M33G-0P20, Panel: V500HJ1-PE8(C7)

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh4uHOitWoiLX6GwxccuLUeeYWwihR_st_Q8YHnpQwN5lUok0PRdnK3LgomtSfIKsBCIRLTuXrkuERrA2vUaIGBMNKNv0IoQvX69zYdBsmB5Br1WJ7u-roP1360hlkKD8mblyqrHNQFhZA/s1600/5800-A6M33G-0P20_DCE.jpg
 The external view of the MainBoard 5800-A6M33G-0P20 is shown in the figure below:
5800-A6M33G-0P20
External view of the power supply
Main features of the TELEFUNKEN TF-LED50S13T2 device:
Installed matrix (LED panel) V500HJ1-PE8 (C7) RDL500FY.
A converter combined with a power supply is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the TELEFUNKEN TF-LED50S13T2 TV is carried out by the L5R012 power module, or its analogs.
MainBoard - the main board (motherboard) is a 5800-A6M33G-0P20 module, using CPU chips: MSD3463GLAT-W2, SPI Flash: 25Q64BSIG, Audio: TPA3110D2 and others.
The CP + SAT tuner provides TV reception and channel tuning.
TELEFUNKEN TF-LED50S13T2 TV with LCD V500HJ1-PE8 (C7), diagonal size 50 "(127 cm) 16: 9. Screen brightness of 320 cd / m² is provided by LED backlighting. Contrast as the ratio of maximum brightness to minimum brightness , is 3500: 1. The technology of production of the screen of this TV model is realized with LED backlight. The design and technical capabilities of the TV provide for viewing programs and films in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). Input high-frequency or the video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported multimedia file formats: MP3, WMA, MPEG4, Xvid, MKV , JPEG.
Speaker power of 16 W (2x8 W) is provided by two speakers. Uses NICAM stereo signal processing system and Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x3, MHL, USB x2. 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, 1280x1024, 1360x768, 1920x1080.
The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2 standards.
Dimensions: With stand 1125x694x264 mm, Without stand 1124x652x75 mm.
Attention! Panel V500HJ1-PE8 (C7) LED TV TELEFUNKEN TF-LED50S13T2 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.