Technical description and composition of the PHILIPS 42PFL5322S TV, type of panel and applicable modules. The composition of the modules.
PHILIPS
Model: 42PFL5322S / 60
Chassis / Version: LC7.1E LA
Panel: LC420WX7 SLB1 T703C
Inverter (backlight): LC420WX7 master 6632L-0448C slave 6632L-0449C
PWM Inverter: A393F (8) MSC1691AI (16)
MOSFET Inverter: FDD8447L
Power Supply (PSU): PLHL-T605A / T606A PIPB rev. 2.1
PWM Power: FAN7382 (8), 1207A (SO-8), FA5501A (PFC)
MOSFET Power: FDPF7N50U
MainBoard: 3139_123_62611
IC MainBoard: CPU: M30300SAGP; DRAM: EDS1216AGTA; NAND Flash: M29W320ET70N; EEPROM: M24C64; SOUND: TDA8932T
Tuner: UV1318S / A
Specifications 42PFL5322
PHILIPS 42PFL5322S
General recommendations for repairing TV LCD
PHILIPS TV made on the LC7.1E LA chassis, like many other electronic devices, it is advisable to start repairing by inspecting all 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. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
In the case when the 42PFL5322S does not turn on, does not respond to the remote control and the front panel buttons, does not blink lights and does not show any signs of operability, the PLHL-605A / T606A PIPB rev.2.1 power supply module is probably faulty in this case. If it is serviceable with such manifestations, it is necessary to check the stabilizer (converter) of the processor power supply on the motherboard. If there are no swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is necessary to check all power semiconductor elements first primary circuit - diodes and transistors FDPF7N50U, for the likelihood of an avalanche or thermal breakdown.
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 regulator chip FAN7382 (8), 1207A (SO-8), 5501A (8A) are subject to verification, which it is desirable to verify by replacement.
In cases where the PHILIPS 42PFL5322S TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of an inverter (converter for powering the backlight) malfunction. When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power. Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
Once again, remind users! Attempts to independently repair the PHILIPS 42PFL5322S TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual and schematic diagram 42PFL5322S/60 Chassis LC7.1E LA
MODELS: 26PFL3312/10, 26PFL3312S/60, 26PFL5322/10, 26PFL5322/12, 26PFL5322S/60, 26PFL7332S/60, 32PFL3312/10, 32PFL3312S/60, 32PFL5322/10, 32PFL5322/12, 37PFL3312/10,37PFL3312S/60, 37PFL5322/10, 37PFL5322/12, 37PFL5322S/60, 42PFL3312/10, 42PFL3312S/60, 42PFL5322/10, 42PFL5322/12, 42PFL5322S/60
The appearance of MainBoard 3139_123_62611 is shown in the figure below:3139_123_62611
3139_123_62611 can be used in TVs:
PHILIPS 26HF5445/10 (Panel V260B1-L03 code 068 p/n: 932224937682), PHILIPS 26PFL5322S/60 (Panel V260B1-L03 Rev.C3), PHILIPS 26PFL7332S/60 (Panel V260B1-L03 Rev.C3), PHILIPS 32PFL3312S/80 (Panel V315B1-L05 REV.C1), PHILIPS 32PFL5322S/60 (Panel LK315T3LZ93Q), PHILIPS 32PFL5322S/60 (Panel T315XW02 V.D), PHILIPS 32PFL5332S/60 (Panel T315XW02), PHILIPS 37PFL3312/10 (Panel LC370WX1-SLB1), PHILIPS 37PFL3312S/60 (Panel LC370WX4-SLB1), PHILIPS 37PFL3312S/60 (Panel LC370WX5 (SL)(B1)), PHILIPS 37PFL5322S/60 (Panel LC370WX4-SLB1), PHILIPS 37PFL5322S/60 (Panel LC370WX4-SLB1 T704A REV-0.8), PHILIPS 37PFL7662D/12 (Panel T370HW02 V.1), PHILIPS 42PFL3312S/60 (Panel LC420WX8 (SL)(B1)), PHILIPS 42PFL5322S/60 (Panel LC420WX7 SLB1 T703C), PHILIPS 42PFL7662D/12 (Panel LC420WU5 code 093), PHILIPS 42PFL7682D/12 (Panel LC420WU5), PHILIPS 47PFL5522D/12 (Panel LC470WX1-SLA2 code 109 p/n: 932225331682 (LGPH) B ).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the PLHL-T605A / T606A PIPB rev.2.1 module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on a 5501 PWM controller. The reactance of the mains filter electrolytic capacitor at a frequency of 50-60 Hz is usually no more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering is applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 42PFL5322S device:
Installed matrix (LCD panel) LC420WX7 SLB1 T703C.
An LC420WX7 inverter is used to power the backlight, controlled by the A393F (8) MSC1691AI (16) PWM controller. As power elements of the inverter, keys of the FDD8447L type are used.
The necessary supply voltages for all nodes of the PHILIPS 42PFL5322S TV are generated by the PLHL-T605A power supply module or its analogs using FAN7382 (8), 1207A (SO-8), FA5501A (PFC) microcircuits and FDPF7N50U type power switches.
MainBoard - the main board (motherboard) is a 3139_123_62611 module, using CPU chips: M30300SAGP; DRAM: EDS1216AGTA; NAND Flash: M29W320ET70N; EEPROM: M24C64; SOUND: TDA8932T and others.
The UV1318S / A tuner allows you to receive television programs and tune to channels.