Technical description and composition of the PHILIPS 48PFS8209 TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 48PFS8209 / 60
Chassis / Version: QV14.1E LA
Panel: TPT480LS-HJ03
LED backlight: TPGE480SMO-R1
LED driver (backlight): integrated into PSU
PWM LED driver: BD9479FV SSOP-40
MOSFET LED driver: TO-252
Power Supply (PSU): FSP113-4FS01
PWM Power: PFC & PWM, STB
MOSFET Power: N-FET TO-220F
MainBoard: 715RLPCB0000000055
IC MainBoard: DE3114-A1, W25Q64FVSSIG, 88DE6010, TDA8296HN
Tuner: PE631AN DVB-T2 & SAT
Specifications 48PFS8209
PHILIPS 48PFS8209
General repair guidelines for TV LCD LED
Possible malfunctions
- PHILIPS 48PFS8209 does not turn on and does not show any signs of operability at all. Does not blink indicators and does not respond to control buttons.
Typically, with such manifestations, the defect is caused by faulty elements in the main power module FSP113-4FS01. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, check the serviceability of power switches (N-FET TO-220F) and rectifier diodes for possible breakdown (short circuit).
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microchips PFC & PWM, STB are usually checked by replacing with new, or obviously working.
- There is no image, there is sound, all other functions of the TV work. When turned on, the image may sometimes appear for a second.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode 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 715RLPCB0000000055 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Board repair and chip replacement DE3114-A1, W25Q64FVSSIG, 88DE6010, TDA8296HN are carried out 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 is working properly from external devices, first of all you need to check the voltage of the tuner PE631AN DVB-T2 & SAT and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Owners of the 48PFS8209 TV are recommended to repair only qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
Service manual and schematic diagram --------------> PHILIPS 48PFS8209/60 Chassis QV14.1E LA
The appearance of MainBoard 715RLPCB0000000055 is shown in the figure below:
715RLPCB0000000055
The appearance of the power supply
Main features of the PHILIPS 48PFS8209 device:
The matrix (LED panel) TPT480LS-HJ03 is installed.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the BD9479FV SSOP-40 PWM controller. As power elements of the LED driver, keys of the TO-252 type are used.
The necessary supply voltages for all nodes of the PHILIPS 48PFS8209 television are generated by the FSP113-4FS01 power supply module or its analogs using PFC & PWM, STB microcircuits and N-FET TO-220F type power switches.
MainBoard - the main board (motherboard) is a module 715RLPCB0000000055, using chips DE3114-A1, W25Q64FVSSIG, 88DE6010, TDA8296HN and others.
Tuner PE631AN DVB-T2 & SAT provides the reception of television programs and tuning to channels.