Technical description and composition of the PHILIPS 55PFL8007K TV, panel type and applicable modules. The composition of the modules.PHILIPS LED
Model: 55PFL8007K / 12
Chassis / Version: QFU1.1E LA
Panel: LTA550HQ19
LED backlight: LJ64-03329A
LED driver (backlight): integrated into PSU
PWM LED driver: OZ9909TN, LM358G
Power Supply (PSU): FSP197-4FS01 2722 171 90676 REV: 01
PWM Power: FAN7930 (PFC), FSB127H (Stb), SSC9522S (PWM)
MainBoard: 310431365554 310430898314
IC MainBoard: CPU: FUSION240, NAND Flash: 29F8G08ABABA, DRAM: H5TQ2G63BFR, SOUND: TAS5731P1, SPI Flash: 25P10, EEPROM: M24C64
Tuner: SUT-RE214AN
Technical Specifications 55PFL8007K
PHILIPS 55PFL8007K
General repair guidelines for TV LCD LED
Possible malfunctions
- PHILIPS 55PFL8007K does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
Often in such cases, the FSP197-4FS01 power module is faulty. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches of the converters and rectifier diodes for the probability of a short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) FAN7930 (PFC), FSB127H (Stb), SSC9522S (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
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. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a malfunction, the zener diode PN junction will either be cut off or broken into short-circuit.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the motherboard 310431365554 should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). Board repair and chip replacement CPU: FUSION240, NAND Flash: 29F8G08ABABA, DRAM: H5TQ2G63BFR, SOUND: TAS5731P1, SPI Flash: 25P10, EEPROM: M24C64 are made 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.
If there is no reception of television channels, but the TV works properly from external devices, first of all it is necessary to check the voltage of the tuner SUT-RE214AN and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
It should be remembered! Attempts to independently repair the PHILIPS 55PFL8007K TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-serviceability of the device!
Service manual and schematic diagram PHILIPS 55PFL8007K Chassis QFU1.1E LA
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).
The appearance of the power supply
Main features of the PHILIPS 55PFL8007K 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 55PFL8007K TV are generated by the FSP197-4FS01 power supply module or its analogs using FAN7930 (PFC), FSB127H (Stb), SSC9522S (PWM) microcircuits.
MainBoard - the main board (motherboard) is a module 310431365554 using CPU chips: FUSION240, NAND Flash: 29F8G08ABABA, DRAM: H5TQ2G63BFR, SOUND: TAS5731P1, SPI Flash: 25P10, EEPROM: M24C64 and others.
The SUT-RE214AN tuner provides TV reception and channel tuning.