Technical description and composition of the PHILIPS 46PFL4308T TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 46PFL4308T / 60
Chassis / Version: TMP10.1E LA
Panel: LTA460HJ18
T-CON: 13NNB_SQ60MB3C2LV0.1
Inverter (backlight): 715G5787-P02-000-002S
PWM Inverter: PF7900S, PF7700A
Power Supply (PSU): 715G5778-P02-000-002M
PWM Power: SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby)
MOSFET Power: STF8NM50N, STF24NM60N (PFC)
MainBoard: 715G5675-M01-000-005K (VER.A)
IC MainBoard: MTK5580CPOI, TC58NVG1S3ETAI0, CAT24C128WI, STA381BWTR
Tuner: TDSY-G230D
Specifications 46PFL4308T
PHILIPS 46PFL4308T
General recommendations for repairing TV LCD
Possible manifestations of defects
- The PHILIPS 46PFL4308T does not turn on. There is no reaction to the remote control and to the control buttons from the front panel. Indicator lights do not light or flash.
With such manifestations, in most cases, the 715G5778-P02-000-002M power module is faulty. Then you should measure its output voltage. Standby power, implemented on the PWM controller A6069H (Standby). When it is working, it is necessary to check the operability of the power switches STF8NM50N, STF24NM60N (PFC), as well as rectifier diodes of the converters of the main source and PFC for the presence of a possible short circuit.
In case of any breakdown of the diodes in the secondary circuits, the converter can operate in an emergency short circuit mode, and during a short circuit in the power elements of the primary circuit, the main fuse or a current sensor at the source of the key usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback.
PWM circuits (PWM) SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby) are checked by replacing with obviously good ones.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply to the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the motherboard (SSB) 715G5675-M01-000-005K should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - MTK5580CPOI, TC58NVG1S3ETAI0, CAT24C128WI, STA381BWTR and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the TDSY-G230D tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Owners and users of the PHILIPS 46PFL4308T TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences, which can lead to complete non-repairability of the device!
SCHEMATIC MANUAL 47PFL5028T/60 Chassis TPM10.1E LA part1, part2, part3
The appearance of the MainBoard 715G5675-M01-000-005K is shown in the figure below:715G5675-M01-000-005K
715G5675-M01-000-005K can be used in TVs:
PHILIPS 22PFL4008T/60 (Panel TPM215HW01-HGJL02 code 200), PHILIPS 32PFL3008T/60 (Panel TPT315B5-TU4A code 196 p/n: 996590004018), PHILIPS 32PFL3018T/60 (Panel DUNTK5004ZZ RUNTK5003 code 196), PHILIPS 32PFL4208T60 (Panel TPT315B5-DXJSFE), PHILIPS 32PFL4308T/60 (Panel LTA320HJ06 001 code 185), PHILIPS 46PFL4308T/60 (Panel LTA460HJ18), PHILIPS 46PFL3008T/60 (Panel TPT460H1-HM01 Rev-C1J code 195).
PSU Advanced
The 46PFL4308T / 60 model uses a 715G5778-P02-000-002M power supply unit using the PFC (Power Factor Correction) node - an active filter of higher harmonics of the consumed current. In fact, it is a boost converter based on the R2A20133ESP PWM controller, which eliminates the charge current of the rectifier filter's electrolytic capacitor from the network directly through the open diodes when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the PHILIPS 46PFL4308T device:
Installed matrix (LCD-panel) LTA460HJ18.
The matrix control uses the Timing Controller (T-CON) 13NNB_SQ60MB3C2LV0.1.
To power the backlight, an inverter 715G5787-P02-000-002S is used, it is controlled by the PF7900S, PF7700A PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 46PFL4308T TV are generated by the 715G5778-P02-000-002M power supply module or its analogs using SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby) microcircuits and STF8NMN50N, STF8N power switches (STF8NM50N, PFC).
MainBoard - the main board (motherboard) is a module 715G5675-M01-000-005K, using chips MTK5580CPOI, TC58NVG1S3ETAI0, CAT24C128WI, STA381BWTR and others.
The TDSY-G230D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA460HJ18
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: SPVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Surface: Antiglare (Haze 2%), Hard coating (2H)
Brightness: 350 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (8-bit + Hi-FRC), CIE1931 70%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (2 ch, 10-bit), 61 pins
Voltage: 12.0V