Technical description and composition of the PHILIPS 42PFL5604H TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 42PFL5604H / 12
Chassis / Version: Q543.3E LA
Panel: LC420WUG (SB) (A1)
T-CON: LG display R8J01070FT
Inverter (backlight): PLHL-T813A
PWM Inverter: OZ9966GN
MOSFET Inverter: FDD5N50
Power Supply (PSU): PLHL-T813A 2722 171 00722
PWM Power: FAN7530 (PFC), NCP1207A, FSQ510
MOSFET Power: KA3561, FQPF3N80C
MainBoard: 313912364561 PHL3139 123 64561 BD3139 123 64571V5 WK850.5
IC MainBoard: PNX85433EH24 180, 24c16WP, TDA9996HL / C1, DVB-T, DVB-C DRX3926K3, TPA3123D2
Tuner: HD1816AF / BHXP
Control: Remote: RC-2023615, IR: GWA7.820.628-2C
Specifications 42PFL5604H
PHILIPS 42PFL5604H
General recommendations for repairing TV LCD
It is recommended to start troubleshooting diagnostics and repairing PHILIPS with the Q543.3E LA chassis, as well as other electronic devices, with an external inspection of the external and internal elements. Visible damage to the elements can sometimes indicate the direction of the search for the defect even before the necessary measurements. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
In cases when the PHILIPS 42PFL5604H 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 at all, the PLHL-T813A power supply module is most likely malfunctioning or missing processor power on the motherboard (a typical defect of some PHILIPS TVs). Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
If the PHILIPS 42PFL5604H TV does not have an image, but there is sound, the malfunction should be sought in the backlight lamp power converter (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply) for an overstated ESR. It should be remembered that when the protection is turned off in order to diagnose a malfunction, there is always a risk of failure of the power elements of the inverter. After repair, it is necessary to restore all standard converter protection circuits.
Repair of the motherboard PHL3139 123 64561 BD3139 123 64571V5 WK850.5 should begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. In some cases, to repair the MB (SSB) board, it may be necessary to replace the elements - PNX85433EH24 180, 24c16WP, TDA9996HL / C1, DVB-T, DVB-C DRX3926K3, TPA3123D2, tun HD1816AF / BHXP with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
One of the most common typical defects on the TPM3.1E LA chassis motherboard is caused by the use of the G973-120 linear stabilizer (G973-120ADJF11U) to power the processor in standby mode (3.3 V). Perhaps the problem is caused by poorly selected thermal conditions, or poor quality microcircuit.
External manifestations: the TV does not turn on and no indicators light up, although the power supply is working. At the output of the G973-120, a voltage of 3.3 V is underestimated or missing. It can be replaced by a more powerful 78R33 using heat sink and some design changes.
Attention to users! Self-repair of a PHILIPS 42PFL5604H TV without the appropriate qualifications and experience can lead to its complete non-repairability !!!!!!!!!
SCHEMATIC MANUAL ---------------------> 42PFL5604H/12 Chassis Q543.3E LA
SCHEMATIC MANUAL ---------------------> 42PFL5604 Chassis TPM3.1E LA
ssb PNL 3139 123 64561 BD 3139 123 64571V5 WK850.5, S31392 6864536 B0001, CODE 220.
The appearance of MainBoard 313912364561 is shown in the figure below:313912364561
313912364561 can be used in TVs:
PHILIPS 32PFL5604H / 12 (Panel LK315D3GA13 code 199 p / n: 93220268009682), PHILIPS 37PFL5604H / 12 (Panel LC370WUE SBA1 Code 201), PHILIPS 42PFL5604H / 12 (Panel LC420WUG (SB) (A1).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the PLHL-T813A module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the FAN7530 PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not 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 was 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 42PFL5604H device:
Installed matrix (LCD panel) LC420WUG (SB) (A1).
The matrix control uses the Timing Controller (T-CON) LG.
To power the backlight used inverter PLHL-T813A, controlled by the PWM controller OZ9966GN. As power elements of the inverter, keys of the FDD5N50 type are used.
The necessary supply voltages for all nodes of the PHILIPS 42PFL5604H TV are generated by the PLHL-T813A power module or its analogs using FAN7530 (PFC), NCP1207A, FSQ510 microchips and power switches of the KA3561, FQPF3N80C type.
MainBoard - the main board (motherboard) is a module 313912364561, using chips PNX85433EH24 180, 24c16WP, TDA9996HL / C1, DVB-T, DVB-C DRX3926K3, TPA3123D2 and others.
The HD1816AF / BHXP tuner provides television reception and channel tuning.