Technical description and composition of the TELEFUNKEN TF-LED32S40T2 TV, panel type and modules used. The composition of the modules.TELEFUNKEN LED
Model: TF-LED32S40T2
Chassis / Version: 5800-A6M31G-0P10
Panel: LC320DXJ- (SH) (A2)
LED backlight: CRH-A323030020759P REV1.1
T-CON: 6870S-1578C
LED driver (backlight): integrated into MainBoard
PWM LED driver: MP3398A
MOSFET LED driver: AOD4286
Power Supply (PSU): integrated into MainBoard
PWM Power: LNK6778K
MainBoard: 5800-A6M31G-0P10 VER: 00.01
IC MainBoard: SPI Flash: 25Q64CSIG, SOUND: TPA3113D2
Control: 5800-RUE300-1P0C VER00.00
TF-LED32S40T2 Specifications
TELEFUNKEN TF-LED32S40T2
General recommendations for TV LCD LED repair
Possible malfunctions
- TELEFUNKEN TF-LED32S40T2 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 such cases, the main power source, the AC / DC converter of the mains voltage, which is combined with the MainBoard 5800-A6M31G-0P10, may be 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 the event of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor in the source of the key usually breaks off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying the PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) LNK6778K, in the absence of external damage and short circuit between the terminals, are checked by replacing them with a known good one.
- There is no image, there is sound, it reacts to the remote control. Or the image may appear for a second when turned on and disappear immediately.
Usually, in such cases, a malfunction is detected in the nodes of the backlight of the LED panel. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light one 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off, or pierced in 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 5800-A6M31G-0P10 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: 25Q64CSIG, SOUND: TPA3113D2 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.
Remember! Attempts to self-repair the TELEFUNKEN TF-LED32S40T2 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
To reduce the backlight current, you should proportionally increase the total resistance of the resistors relative to the case at the ISET pin of the MP3398A controller. ISET (Current Setting) - Pin 8 in SOIC-20 package or Pin 6 in SOIC-16 package.
The appearance of the MainBoard 5800-A6M31G-0P10 is shown in the figure below:5800-A6M31G-0P10
5800-A6M31G-0P10 can be used in TVs:
AIWA 32LE4020 (Panel LC320DXJ-SHA2 GDL320HY (LD0-008) Rev.00), AIWA 32LE7020 (Panel LC320DXJ (SH)(A2)), ERISSON 32LES71T2 (Panel LC320DXJ-SFA2), ERISSON 32LES70T2 (Panel LC320DXJ (SF)(A2)), SUPRA STV-LC32T650WL (Panel LC320DXJ-SFA2 RDL320HY(LD0-803)45).
Main features of the TELEFUNKEN TF-LED32S40T2 device:
Installed matrix (LED panel) LC320DXJ- (SH) (A2).
Matrix control uses the 6870S-1578C Timing Controller (T-CON).
To power the backlight LEDs, a converter combined with the 5800-A6M31G-0P10 main board is used, controlled by the MP3398A PWM controller. The keys of the AOD4286 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 LNK6778K microcircuits.
MainBoard - the main board (motherboard) is a 5800-A6M31G-0P10 module, using SPI Flash chips: 25Q64CSIG, SOUND: TPA3113D2 and others.
TV TELEFUNKEN TF-LED32S40T2 with LCD display LC320DXJ- (SH) (A2), diagonal size 31.5 "(80 cm) 16: 9 format. Screen brightness of 250 cd / m² is provided by LED backlighting. Contrast as a ratio of maximum brightness to the minimum, is 1200: 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 decomposition 720p (HD Ready) .Supported media file formats: MP3, MPEG4, Xvid, MKV, JPEG.
Speaker power 12 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, HDMI x2, USB. A headphone output is provided.
The digital tuner is capable of receiving television channels in the DVB-T, DVB-C, DVB-T2, DVB-S2 standards.
Overall dimensions: 735x466x166 mm.
TV weight: 5 kg.
Attention! Panel LC320DXJ- (SH) (A2) LED TV TELEFUNKEN TF-LED32S40T2 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.