Technical description and composition of the PHILIPS 47PFL5028T TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 47PFL5028T / 60
Chassis / Version: TPM10.1E LA
Panel: LC470EUE (FF) (F1) code 191 p / n: 932229833682
LED driver (backlight): integrated into PSU
PWM LED driver: PF7900S, PF7700A
Power Supply (PSU): 715G5778-P02-000-002M 996590004083
PWM Power: SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby)
MainBoard: 715G5713-M0E-000-005X 996590004215
IC MainBoard: CPU: MT5580MPOI; DRAM: H5TQ2G83DFR; NAND Flash: TC58NVG2S3ETAI0; SOUND: STA3818
Tuner: TDSY-G230D
Specifications 47PFL5028T
PHILIPS 47PFL5028T
General repair guidelines for TV LCD LED
TV PHILIPS 47PFL5028T / 60, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
In cases where the PHILIPS 47PFL5028T TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operability when turning on, the power supply module 715G5778-P02-000 is most likely faulty -002M 996590004083 or there is no processor power on the motherboard (a typical defect of some PHILIPS TVs). In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
If the PHILIPS 47PFL5028T does not have an image but there is sound, the backlight LEDs of the LC470EUE (FF) (F1) 932229833682 code 191 or their power converter may malfunction. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
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 should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
Diagnostics and repair of the motherboard 715G5713-M0E-000-005X 996590004215 is carried out by checking the operability of the stabilizers or power converters of the module chips. In some cases, a software update is required.
Attention! For users and owners of 47PFL5028T TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.
SCHEMATIC MANUAL ------------> 47PFL5028T/60 Chassis TPM10.1E LA part1, part2, part3
The appearance of the MainBoard 715G5713-M0E-000-005X is shown in the figure below:715G5713-M0E-000-005X
715G5713-M0E-000-005X can be used in TVs:
PHILIPS 32PFL3208T/60 (Panel TPT315B5-TU4A code 196 p/n: 996590004721), PHILIPS 47PFL5028T/60 (Panel LC470EUE (FF)(F1) code 191 p/n: 932229833682).
PSU Advanced
The 715G5778-P02-000-002M power supply module is made using the Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced into the power supply by the device. The PFC node is a Step-Up Converter based on the R2A20133ESP PWM controller, which evenly distributes high-frequency pulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of an increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 47PFL5028T device:
Installed matrix (LED-panel) LC470EUE (FF) (F1) code 191 p / n: 932229833682.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the PF7900S, PF7700A PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 47PFL5028T TV are generated by the 715G5778-P02-000-002M power supply module, or its analogs using SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby) microcircuits.
MainBoard - the main board (motherboard) is a module 715G5713-M0E-000-005X, using CPU chips: MT5580MPOI; DRAM: H5TQ2G83DFR; NAND Flash: TC58NVG2S3ETAI0; SOUND: STA3818 and others.
The TDSY-G230D tuner provides TV reception and channel tuning.