Technical description and composition of the PHILIPS 50PFL5028T TV, type of panel and applicable modules. The composition of the modules.
PHILIPS LED
Model: 50PFL5028T / 60
Chassis / Version: TPM10.1E LA
Panel: LC500EUE FFF1 code 192 p / n: 93229834682
LED driver (backlight): integrated into PSU
PWM LED driver: PF7900S, PF7700A
Power Supply (PSU): 715G5778-P03-W21-002M 996590004396
PWM Power: SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby)
MOSFET Power: STF8NM50N, STF24NM60N
MainBoard: 715G5713-M01-000-005K 996590004409
IC MainBoard: CPU: MT5580MPOI; DRAM: H5TQ2G83DFR; NAND Flash: TC58NVG2S3ETAI0; SOUND: STA3818
Tuner: TDSY-G230D
PHILIPS LED
Model: 50PFL5028T / 60
Chassis / Version: TPM10.1E LA
Panel: LC500EUE-FFF1 code 192 p / n: 932229834682
LED driver (backlight): integrated into PSU
PWM LED driver: SSL100SN
MOSFET LED driver: STA3250, APM4015P, SF10A400HD
Power Supply (PSU): 715G5246-P01-000-002H 996590004396 // 715G5778-P02-000-002S
PWM Power: SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby)
MainBoard: 715G5713-M0E-000-005N 996590004409
IC MainBoard: AZ1084, GH17M 246NJ2, 54519 (16) DC-DC
Tuner: TDSY-G230D
Control: YKF314-005 996590004895
Specifications 50PFL5028T
PHILIPS 50PFL5028T
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs PHILIPS 50PFL5028T / 60, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. If ring cracks are detected in the soldered terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of an already known typical malfunction.
In the case when the 50PFL5028T does not turn on, does not respond to the remote control and buttons on the front panel, does not blink light bulbs and does not show any signs of operability, probably in this case the power supply module 715G5246-P01-000-002H 996590004396 // 715G5778-P02-000- is faulty 002S. If it is serviceable with such manifestations, it is necessary to check the power supply stabilizer (converter) of the processor on the motherboard. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the PF7700A S SOP-8, SSC9522S-TL SOP-18 PWM controller microcircuit, which can only be checked by replacing it with a new or obviously working one.
If the PHILIPS 50PFL5028T does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the LC500EUE-FFF1 932229834682 panel code 192, or their power converter is an LED driver. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main PSU.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
It is impossible to check the LED line for breaks 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.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
Before replacing the TDSY-G230D tuner, if there is no tuning for the channels, first you need to check the supply voltage at its terminals, including the varicap supply (30-33V).
Once again, remind users! Attempts to self-repair a PHILIPS 50PFL5028T TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC MANUAL ----------------> 50PFL5028T/60 Chassis TPM10.1E LA part1, part2, part3
The appearance of MainBoard 715G5713-M0E-000-005N is shown in the figure below:715G5713-M0E-000-005N
715G5713-M0E-000-005N can be used in TVs:
PHILIPS 32PFL5008T/60 (Panel LC320EUE (FF)(F1) code 189 p/n: 932229831682), PHILIPS 46PFL4208T/60 (Panel TPT460H1-HM01 REVC1F), PHILIPS 50PFL5028T/60 (Panel LC500EUE-FFF1 code 192 p/n: 932229834682), PHILIPS 32PFL4418T/60 (Panel LTA320HJ06).
PSU Advanced
The 50PFL5028T / 60 model uses a 715G5246-P01-000-002H power supply unit using the PFC (Power Factor Correction) node - an active filter of higher harmonics of the current consumption. 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 50PFL5028T device:
Installed matrix (LED panel) LC500EUE-FFF1 code 192 p / n: 932229834682.
To power the backlight LEDs, a converter is used, combined with the power supply, it is controlled by the SSL100SN PWM controller. As the power elements of the LED driver, keys of the type STA3250, APM4015P, SF10A400HD are used.
The necessary supply voltages for all nodes of the PHILIPS 50PFL5028T TV are generated by the 715G5246-P01-000-002H power module, or its analogs using SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby) microcircuits.
MainBoard - the main board (motherboard) is a module 715G5713-M0E-000-005N, using microchips AZ1084, GH17M 246NJ2, 54519 (16) DC-DC and others.
The TDSY-G230D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC500EUE-FFF1
Type: a-Si TFT-LCD, Panel
Diagonal size: 50 inch
Resolution: 1920x1080, FHD
Display Mode: IPS, Normally Black, Transmissive
Active Area: 1095.84x616.41 mm
Surface: Antiglare (Haze 1%), Hard coating (2H)
Brightness: 350 cd / m²
Contrast Ratio: 1400: 1
Display Colors: 16.7M (8-bit)
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V