Composition
Specifications
TELEFUNKEN TF-LED32S43T2
LCD TV LED TF-LED32S43T2 | Year of manufacture: 2017
Screen diagonal: 31.5" (80 cm)
Aspect ratio: 16:9
Resolution: 1366x768
Refresh rate: 50Hz
LCD panel type: LSC320AN09
LED backlight: Yes
Support HD: 720p HD
Brightness: 220 cd/m2
Contrast: 5000:1
Viewing Angle: 178°
Pixel response time: 8 msec
Progressive scan: Yes
Digital tuner: DVB-T, DVB-T2, DVB-C
Number of channels: 799
Teletext: there is
Multimedia: MP3, MPEG4, Xvid, MKV, JPEG
Sound stereo: there is
Sound Power: 12W (2x6W)
Acoustics: two speakers
Interface: AV, component, VGA, HDMI x3, USB
Headphone jack: yes
Find out more...
TELEFUNKEN TF-LED32S43T2
TELEFUNKEN LED
Model: TF-LED32S43T2
Chassis/Version: TP.MS3463S.PB801
Panel: HK315LEDM-MHXMH
LED backlight: CUW JHSP 3528 3V 1.5W 131LM 500mA
LED driver (backlight): integrated into MainBoard
PWM LED driver: SN51DP
MOSFET LED driver: AOD458 TO-252
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: TO-220
MainBoard: TP.MS3463S.PB801
IC MainBoard: CPU: MSD3463GU, SPI Flash: GD25Q64, AUDIO: OB6220VP
TP: XF-3SDT-H
General advice about LCD LED TV repair
Possible defects
- TELEFUNKEN TF-LED32S43T2 will not turn on or show any signs of functionality. It doesn't blink and doesn't respond to the control buttons.
In this case the main AC/DC converter, which is located on the MainBoard TP.MS3463S.PB801, may be defective. You should measure its output voltages and if not, check the functionality of the power switches (TO-220) and the rectifier diodes in the converters for possible breakdown.
If there is a breakdown in the secondary circuits, the inverter can usually be short-circuited, and if there is a short in the power elements of the primary circuit, the mains fuse usually blows.
Mos-Fet switches used in switching power supplies usually fail due to the failure of other elements that can take it out of key mode, or cause it to exceed the maximum current or voltage. These may be the circuits supplying the PWM controller, the damping or frequency-retaining circuits, or the negative feedback elements in the stabilization circuit. PWM controllers (PWM) PWM SOT23-6, if there are no external damages and short circuits between pins, are checked by replacing with known good ones.
- No picture, but there is sound and the remote control reacts. Or the image appears at switching on and immediately disappears.
In some of these cases malfunction is caused by the lack of backlighting of the display. Often the cause of the fault is the lack of current in the LED circuit, such as their breakage or short circuit, or a violation of the connector pins CUW JHSP 3528 3V 1,5W 131LM 500mA .
It should be remembered that to determine the breakage in the LED strips without disassembling the panel, using a tester or multimeter is not possible without an additional device, such as a current source. To open all the PN-junctions connected in series at once a voltage of several tens of volts may be required. Then you have to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow to open the LED in the forward direction or twin LEd's are used, then the PN junction of the faulty stabilizer can indirectly serve as an indication of serviceability. If the LED is faulty, the PN junction of the stabilizer will either be open or short-circuited.
READ HOW TO REPAIR THE TV LED BACKLIGHT --------------> HERE.
- The TV set does not enter the operation mode, the remote control is not responding. Front panel LED is either on continuously or is blinking.
Repair or diagnostic of the TP.MS3463S.PB801 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and the matrix. If necessary, update or replace the software (firmware). In cases of complex repairs of MB (SSB) and with the necessary skills and equipment sometimes it may be necessary to replace its chips CPU: MSD3463GU, SPI Flash: GD25Q64, AUDIO: OB6220VP and other possible defective components. Faults related to the use of BGA soldering technology are usually easily diagnosed by the heating method.
If there is no TV channel reception, but your TV works fine with external devices, the first thing to do is to check the XF-3SDT-H tuner supply voltage and update the software. Check the I2C communication pulses with an oscilloscope.
Once again, users need to be reminded! Trying to repair your TELEFUNKEN TF-LED32S43T2 without proper skill and experience may result in its total uselessness!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Chassis TP.MS3463S.PB801.
Refinement after the repair of the backlight. TP.MS3463S.PB801, SN51DP. Information from the master.
Reduce backlight current from 290 mA to 210 mA - removed one of the resistors (2.2 Ohm) in the driver current sensor on the TP.MS3463S.PB801 board. The sensor resistors are under the DB801 diode.
More on MainBoard repair
The appearance of the MainBoard TP.MS3463S.PB801 is shown in the figure below:
TP.MS3463S.PB801
The TP.MS3463S.PB801 can be used in TV sets:
AKAI LEA-40V35M (Panel LSC400HM06), AKIRA 32LED38T2P (Panel ST3151A05-8), AKIRA 32LED02T2M (Panel ST3151A04-9 Ver.2.1), BBK 32LEM-1029/TS2C (Panel C320X16-E18-H), BBK 39LEM-1033/TS2C (Panel C390X15-E8-A G01), BBK 32LEM-1026/TS2C (Panel CX315DLEDM ST3151A05-8), BBK 32LEM-1027/TS2C (Panel ST3151A05-8 / CX315DLEDM), DEXP F43C7100K (Panel LC430DUY (SH)(A1)), DEXP F42B7000M (Panel V420HJ2-P01), DEXP F43C7000C (Panel C430F14-E1-L / LC430DUY), DEXP F40B7100K (Panel LSC400HN02-G02 40N06-L-HPX1F1), DEXP H28C7100C (Panel C275X15-E1-H (G31)), DEXP H32C7300K (Panel LSC320AN02), DEXP H32D7100C (Panel ST3151A05-8 Ver2.5), DEXP H28D7300K (Panel HV280WX2-260), ERISSON 32LES78T2W (Panel KM0320LDRH0037), ERISSON 32LEE30T2 (Panel LK315T3HB87-12V), SUPRA STV-LC32T560WL (Panel LSC320AN10), SUPRA STV-LC32T550WL (Panel LSC320AN02), SUPRA STV-LC40T500WL (Panel C39X15-E7-A), TELEFUNKEN TF-LED32S45T2 (Panel LK315T3HB87-12V), THOMSON T39D20DH-01B (Panel T390XVN01.0).
PWM SMPS in SOT-23-6, SOT-26, TSOP-6 packages
In
the circuitry of modern switching power supplies (SMPS), PWM
controllers made in small-sized planar packages with six terminals have
gained wide popularity. The enclosure type designation can be SOT-23-6,
SOT-23-6L, SOT-26, TSOP-6, SSOT-6. The appearance and arrangement of the
pins are shown in the figure below. In this case, the code marking
LD7530A is shown on the left fragment of the picture.
Pin assignment:
1 - GND. (Common wire).
2
- FB. (FeedBack - Feedback). Input for controlling the duration of
pulses with a signal from the output voltage. Sometimes it can be
labeled COMP (input comparator).
3 - RI / RT / CT / COMP / NC -
Depending on the type of microcircuit, it can be used for a
frequency-setting RC circuit (RI / RT / CT), or for organizing
protection, as an input of a PWM trip comparator at a threshold value at
its input, specified in the document. In some types of microcircuits,
this input may not be used in any way (NC - No Connect).
4 - SENSE, otherwise CS (Current Sense) - Input from the current sensor at the source of the key.
5 - VCC - Input voltage supply and start of the microcircuit.
6 - OUT (GATE) - Output for controlling the gate (Gate) of the key.
Functionally,
these regulators work on the principle of the previously popular xx384x
PWM microcircuits, which have proven themselves well in terms of
reliability and stability.
Some difficulties often arise when
replacing or choosing an analog for such PWM regulators due to the use
of code markings in the designation of the type of microcircuits. The
situation is complicated by a large number of component manufacturers
who do not always provide documentation to the mass access, just as not
all manufacturers of finished devices supply repair service centers with
diagrams, so repairmen often have to study real circuit solutions by
installed components and wiring connections directly on the board.
In
practice, PWM microcircuits and the marking code EAxxx and Eaxxx are
often found. Official documentation for them was not found in the public
domain, but discussions on the forums and pieces of pictures from PDF
from System General, which publishes them as SG6848T and SG6848T2, have
survived. The drawing is here placed left .
For the attention of the masters, here below are PDF datasheet tables
compiled from information available on the Internet and PDF documents
for the selection of analogues types when replacing the most common
six-legged planar PWM with pinout pins: pin1 - GND, pin2 - FB (COMP),
pin4 - Sense, pin5 - Vcc, pin6 - OUT ...
Their main difference is the application and purpose of pin 3.
| Name | Part Number | Fabricant | Marking |
|---|---|---|---|
| SG6849 | SG684965TZ | Fairchild / ON Semi | BBxx |
| SG6849 | SG6849-65T, SG6849-65TZ | System General | MBxx EBxx |
| SGP400 | SGP400TZ | System General | AAKxx |
PWM controllers (PWM) with a 95-100 kOhm resistor on pin 3.
When
applying the PWM listed below, the frequency should be set with the RT
(RI) resistor from pin 3 to ground. Usually its nominal value is chosen
95-100 kOhm for a frequency of 65-100 KHz. For more details, see the
here below attached documentation. PDF files are packed in RAR.
| Name | Part Number | Fabricant | Marking |
|---|---|---|---|
| AP3103A | AP3103AKTR-G1 | Diodes Incorporated | GHL |
| AP8263 | AP8263E6R, A8263E6VR | AiT Semiconductor | S1xx |
| AT3263 | AT3263S6 | ATC Technology | 3263 |
| CR6848 | CR6848S | Chip-Rail | 848H16 |
| CR6850 | CR6850S | Chip-Rail | 850xx |
| CR6851 | CR6851S | Chip-Rail | 851xx |
| FAN6602R | FAN6602RM6X | Fairchild / ON Semi | ACCxx |
| FS6830 | FS6830 | FirstSemi | |
| GR8830 | GR8830CG | Grenergy | 30xx |
| GR8836 | GR8836C, GR8836CG | Grenergy | 36xx |
| H6849 | H6849NF | HI-SINCERITY | |
| H6850 | H6850NF | HI-SINCERITY | |
| HT2263 | HT2263MP | HOT-CHIP | 63xxx |
| KP201 | Kiwi Instruments | ||
| LD5530 | LD5530GL LD5530R | Leadtrand | xxt30 xxt30R |
| LD7531 | LD7531GL, LD7531PL | Leadtrend | xxP31 |
| LD7531A | LD7531AGL | Leadtrend | xxP31A |
| LD7535/A | LD7535BL, LD7535GL, LD7535ABL, LD7535AGL | Leadtrend | xxP35-xxx35A |
| LD7550 | LD7550BL, LD7550IL | Leadtrend | xxP50 |
| LD7550B | LD7550BBL, LD7550BIL | Leadtrend | xxP50B |
| LD7551 | LD7551BL/IL | Leadtrend | xxP51 |
| LD7551C | LD7551CGL | Leadtrend | xxP51C |
| NX1049 | XN1049TP | Xian-Innuovo | 49xxx |
| OB2262 | OB2262MP | On-Bright-Electronics | 62xx |
| OB2263 | OB2263MP | On-Bright-Electronics | 63xx |
| PT4201 | PT4201E23F | Powtech | 4201 |
| R7731 | R7731GE/PE | Richtek | 0Q= |
| R7731A | R7731AGE | Richtek | IDP=xx |
| SD4870 | SD4870TR | Silan Microelectronics | 4870 |
| SF1530 | SF1530LGT | SiFirst | 30xxx |
| SG5701 | SG5701TZ | System General | AAExx |
| SG6848 | SG6848T, SG6848T1, SG6848TZ1, SG6848T2 | Fairchild / ON Semi | AAHxx EAxxx |
| SG6858 | SG6858TZ | Fairchild / ON Semi | AAIxx |
| SG6859A | SG6859ATZ, SG6859ATY | Fairchild / ON Semi | AAJFxx |
| SG6859 | SG6859TZ | Fairchild / ON Semi | AAJMxx |
| SG6860 | SG6860TY | Fairchild | AAQxx |
| SP6850 | SP6850S26RG | Sporton Lab | 850xx |
| SP6853 | SP6853S26RGB, SP6853S26RG | Sporton Lab | 853xx |
| SW2263 | SW2263MP | SamWin | |
| UC3863/G | UC3863G-AG6-R | Unisonic Technologies Co | U863 U863G |
| XN1049 | XN1049, XN1049TP | Innuovo Microelectronics | 49 xxx |
PWM controllers that use pin 3 differently.
When
using the following PWM (PWM controllers), you should pay attention to
pin 3, which can be used to organize protection - thermal or from
overvoltage of the input voltage.
The frequency can be fixed at 65kHz, or set by the value of the capacitor at pin 3.
When replacing any microcircuits with analogs, carefully study the documentation. PDF files are packed in a RAR archive.
| Name | Part Number | Fabricant | Marking |
|---|---|---|---|
| AP3105/V/L/R | AP3105KTR-G1, AP3105VKTR-G1, AP3105LKTR-G1, AP3105RKTR-G1 | Diodes Incorporated | GHN GHO GHP GHQ |
| AP3105NA/NV/NL/NR | AP3105NAKTR-G1, AP3105NVKTR-G1, AP3105NLKTR-G1, AP3105NRKTR-G1 | Diodes Incorporated | GKN GKO GKP GKQ |
| AP3125A/V/L/R | AP3125AKTR-G1, AP3125VKTR-G1, AP3125LKTR-G1, AP3125RKTR-G1 | Diodes Incorporated | GLS GLU GNB GNC |
| AP3125B | AP3125BKTR-G1 | Diodes Incorporated | GLV |
| AP3125HA/HB | AP3125HAKTR-G1, AP3125HBKTR-G1 | Diodes Incorporated | GNP GNQ |
| AP31261 | AP31261KTR-G1 | Diodes Incorporated | GPE |
| AP3127/H | AP3127KTR-G1, AP3127HKTR-G1 | Diodes Incorporated | GPH GSH |
| AP3301 | AP3301K6TR-G1 | Diodes Incorporated | GTC |
| FAN6862 | FAN6862TY | Fairchild / ON Semi | ABDxx |
| FAN6863 | FAN6863TY, FAN6863LTY, FAN6863RTY | Fairchild / ON Semi | ABRxx |
| HT2273 | HT2273TP | HOT-CHIP | 73xxx |
| LD7510/J | LD7510GL, LD7510JGL | Leadtrend | xxP10 xxP10J |
| LD7530/A | LD7530PL, LD7530GL, LD7530APL, LD7530AGL | Leadtrend | xxP30 xxxP30A |
| LD7532 | LD7532GL | Leadtrend | xxP32 |
| LD7532A | LD7532AGL | Leadtrend | xxP32A |
| LD7532H | LD7532HGL | Leadtrend | xxP32H |
| LD7533 | LD7533GL | Leadtrend | xxP33 |
| LD7536 | LD7536GL | Leadtrend | xxP36 |
| LD7536R | LD7536RGL | Leadtrend | xxP36R |
| LD7537R | LD7537RGL | Leadtrend | xxP37R |
| LD7539C GL | LD7539C GL | Leadtrend | xxP39C |
| ME8204 | ME8204M6G | MicrOne | ME8204xx |
| NCP1250 | NCP1250ASN65T1G, NCP1250BSN65T1G, NCP1250ASN100T1G, NCP1250BSN100T1G | ON Semiconductor | 25xxxx |
| NCP1251 | NCP1251ASN65T1G, NCP1251BSN65T1G, NCP1251ASN100T1G, NCP1251BSN100T1G | ON Semiconductor | 5xxxxx |
| OB2273 | OB2273MP | On-Bright-Electronics | 73xx |
| R7735 | R7735AGE, R7735HGE, R7735GGE, R7735RGE, R7735LGE | Richtek | |
| UC3873/G | UC3873-AG6-R, UC3873G-AG6-R | Unisonic Technologies | U873 U873G |
The main features of TELEFUNKEN TF-LED32S43T2:
HK315LEDM-MHXMH matrix (LED panel) is installed.
A converter, combined with the main board TP.MS3463S.PB801, controlled by the SN51DP PWM controller, is used to power the backlight LEDs. AOD458 TO-252 type switches are used as power elements of the LED driver.
The power module is combined with MainBoard and is designed as reverse-going AC/DC converter with PWM SOT23-6 chips and TO-220 type power switches.
MainBoard - the main board (motherboard) is a TP.MS3463S.PB801 module, with the usage of CPU: MSD3463GU, SPI Flash: GD25Q64, AUDIO: OB6220VP and other microchips.
The XF-3SDT-H tuner provides TV program reception and channel tuning.
TELEFUNKEN TF-LED32S43T2 TV with LCD LSC320AN09, 31.5" (80 cm) diagonal in 16:9 aspect ratio. The screen luminance of 220 cd/m² is provided by the LED backlight. Contrast, as the ratio of maximum brightness to minimum brightness, is 5000:1. The screen technology of this TV model features LED backlighting.
Matrix LSC320AN09 and MainBoard software TP.MS3463S.PB801 implement HD image quality at a resolution of 1366x768 pixels in 720p (HD Ready). Supported multimedia file formats are MP3, MPEG4, Xvid, MKV, JPEG.
The sound system has a capacity of 12 watts (2x6 watt) and is powered by two loudspeakers. NICAM STEREO audio processing system is used.
External interface (connection with other devices) is supported by standard inputs and outputs: antenna input (RF), AV, component, VGA, HDMI x3, USB. There is a headphone output. The digital tuner has DVB-T, DVB-T2, DVB-C standard.
MainBoard power supply is used.
Warning. The panel LSC320AN09 of your TELEFUNKEN TF-LED32S43T2 LED TV is an expensive and unreliable component.
Do not apply any impact on the glass and do not exert any pressure on the screen surface to avoid damaging your LED panel!
Also it is not safe to get liquid on the screen. Sometimes one drop is enough if it drips down the glass onto the cables and the TV becomes unrepairable.