Technical description and composition of the PHILIPS 55PFL7007T TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 55PFL7007T / 12
Chassis / Version: QFU1.1E LA
Panel: LTA550HQ19
LED backlight: LJ64-03329A
LED driver (backlight): integrated into PSU; 57.6V 960mA
PWM LED driver: OZ9909TN, LM358G
Power Supply (PSU): FSP197-4FS01 - 272217190676 2722 171 90676
PWM Power: FAN7930 (PFC), FSB127H (Standby), SSC9522S (PWM resonant)
MainBoard: 310431365554 A
IC MainBoard: CPU: FUSION240; NAND Flash: 29F8G08ABABA; DRAM: H5TQ2G63BFR; SOUND: TAS5731P1; SPI Flash: M25P05-AVMN6 (25P10); EEPROM: M24C64-WDW6
Tuner: SUT-RE214AN
Technical Specifications 55PFL7007T
PHILIPS 55PFL7007T
General repair guidelines for TV LCD LED
If the PHILIPS 55PFL7007T does not turn on, no control lights on the front panel light up and do not blink, therefore, there is a very high probability of a failure of the power module FSP157-4F01 272217190676 2722 171 90676. In some cases, only the processor power regulator may be faulty. After checking the mains fuse and power elements of the primary power supply circuit, you should also check the absence of short circuit in the loads of the secondary rectifiers.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM PWM controller chip may also cause a breakdown of the power switch of the converter.
In cases where the PHILIPS 55PFL7007T TV has lost its image, and the sound is there and all the other functions are functional, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the LTA550HQ19 panel). When you turn on the TV, the image may appear briefly and disappear. It must be borne in mind that with such manifestations the LEDs themselves also fail.
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.
To open all transitions, several tens of volts or more are necessary, and it is best to use a current source for such purposes. A break in the line of LEDs connected in series cannot be detected with a multimeter or tester without disassembling the panel. In the open panel, it is necessary to check each LED. If your multimeter cannot open the LED transitions in forward bias, then see the presence of the PN transition of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
Diagnosis and repair of the 310431365554 A motherboard usually begins with a test of the performance of the stabilizers and power converters of the module chips. In some cases, a software update is required.
Board repair and replacement of CPU chips: FUSION240; NAND Flash: 29F8G08ABABA; DRAM: H5TQ2G63BFR; SOUND: TAS5731P1; SPI Flash: M25P05-AVMN6 (25P10); EEPROM: M24C64-WDW6 are manufactured with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Before replacing the SUT-RE214AN tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
We recommend the owners of the 55PFL7007T TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual and schematic diagram 55PFL8007T/12 Chassis QFU1.1E LA
FORmodels:
40PFL7007H/12, 40PFL7007K/12, 40PFL7007T/12, 40PFL8007K/12, 40PFL8007T/12, 42PFL6907H/12, 42PFL6907K/12, 42PFL6907T/12, 46PFL7007H/12, 46PFL7007K/12, 46PFL7007T/12, 46PFL8007K/12, 46PFL8007T/12, 46PFL9707S/12, 46PFL9707T/12, 47PFL6907H/12, 47PFL6907K/12, 47PFL6907T/12, 55PFL7007H/12, 55PFL7007K/12, 55PFL7007T/12, 55PFL8007K/12, 55PFL8007T/12, 60PFL9607S/12, 60PFL9607T/12.
FIRMWARE FOR SPI, EEPROM --------------------------> 55PFL7007T/12
The appearance of MainBoard 310431365554 is shown in the figure below:310431365554
310431365554 can be used in TVs:
PHILIPS 40PFL7007T/12 (Panel LTA400HL15 code 003), PHILIPS 42PFL6907T/12 (Panel LC420EUF-PEF1 code 413), PHILIPS 46PFL8007T/12 (Panel LTA460HQ17 (SMGK) B p/n: 932229485682), PHILIPS 47PFL6907T/12 (Panel LC470EUF PEF1 code 414), PHILIPS 55PFL8007T/12 (Panel LTA550HQ19 code 325 p/n: 932229486682), PHILIPS 46PFL7007T/12 46PFL7007K/12 (Panel LTA460HQ17 ), PHILIPS 40PFL8007T/12 (Panel LTA400HL15), PHILIPS 46PFL9707T/12 (Panel LK460DL), PHILIPS 55PFL7007T/12 (Panel LTA550HQ19).
PSU Advanced
The 55PFL7007T / 12 model uses the FSP197-4FS01 power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, this is a boost converter based on the AN7930 PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through 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 55PFL7007T device:
Installed matrix (LED-panel) LTA550HQ19.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by a PWM controller OZ9909TN, LM358G.
The necessary supply voltages for all nodes of the PHILIPS 55PFL7007T TV are generated by the FSP197-4FS01 power module or its analogs using FAN7930 (PFC), FSB127H (Standby), SSC9522S (PWM resonant) microcircuits.
MainBoard - the main board (motherboard) is a module 310431365554, using CPU chips: FUSION240; NAND Flash: 29F8G08ABABA; DRAM: H5TQ2G63BFR; SOUND: TAS5731P1; SPI Flash: M25P05-AVMN6 (25P10); EEPROM: M24C64-WDW6 and others.
The SUT-RE214AN tuner provides TV reception and channel tuning.
