Technical description and composition of the PHILIPS 55PFS8159 TV, panel type and applicable modules. The composition of the modules.PHILIPS LED
Model: 55PFS8159 / 60
Chassis / Version: QV14.1E LA
Panel: TPT550J1-HJ06 REV: SC1E
LED backlight: EDGE LED
LED driver (backlight): integrated into PSU
PWM LED driver: BD9479FV
MOSFET LED driver: N-FET TO-252
Power Supply (PSU): FSP143-4FS01
PWM Power: PFC, PWM
MOSFET Power: N-FET TO-220F
MainBoard: 715RLPCB0000000055
IC MainBoard: 88DE6010, TDA8296HN, W25Q64FVSSIG, LNBH26LSPQR, RT9187GSP
Tuner: PE631AN
Technical Specifications 55PFS8159
PHILIPS 55PFS8159
General repair guidelines for TV LCD LED
Possible malfunctions
- The PHILIPS 55PFS8159 TV does not turn on and does not show any signs of operability at all. There is no reaction to the remote control and control buttons from the front panel.
In some of these cases, the main switching power supply, the FSP143-4FS01 module, is faulty. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches (N-FET TO-220F) and rectifier diodes of converters for possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse 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, PWM, PWM microchips are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and all other functions work. Sometimes when you turn on the image for a second appears and disappears.
As a rule, in this case, the LED backlight turns out to be faulty. The reason can be found in the malfunction of the LEDs, in the violation of the contact connections of the LED strips, or in the provision of their power (LED-driver).
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, it 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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - 88DE6010, TDA8296HN, W25Q64FVSSIG, LNBH26LSPQR, RT9187GSP and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
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 and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
Service manual and schematic diagram --------------------> PHILIPS 55PFS8159 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 55PFS8159 device:
Installed matrix (LED panel) TPT550J1-HJ06 REV: SC1E.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a BD9479FV PWM controller. As the power elements of the LED driver, keys of the N-FET TO-252 type are used.
The necessary supply voltages for all nodes of the PHILIPS 55PFS8159 television are generated by the FSP143-4FS01 power supply module or its analogs using PFC, PWM microcircuits, and N-FET TO-220F type power switches.
MainBoard - the main board (motherboard) is a module 715RLPCB0000000055, using chips 88DE6010, TDA8296HN, W25Q64FVSSIG, LNBH26LSPQR, RT9187GSP and others.
The tuner PE631AN provides TV reception and channel tuning.