Technical description and composition of the PHILIPS 55PFL8008S TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 55PFL8008S / 12
Chassis / Version: QFU1.2E LA
Panel: LTA550HQ25
LED driver (backlight): integrated into PSU
Power Supply (PSU): FSP194-4FS01 2722 171 90782 REV: 00
MainBoard: 310431366185
IC MainBoard: FUSION120, H5TQ2G63BFR, H5TQ2G83BFR
Tuner: SUT-RE214AN
Technical Specifications 55PFL8008S
PHILIPS 55PFL8008S
General repair guidelines for TV LCD LED
In the absence of any signs of operability, when the PHILIPS 55PFL8008S does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the power module FSP194-4FS01 2722 171 90782 REV: 00 of the TV. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
If the power keys of the pulse converter are not equal, you should pay attention to other elements in their bundling, which may be the result or cause of their breakdown.
Sometimes the PHILIPS 55PFL8008S TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a possibility of a malfunction of the LED driver - power converter for the backlight LEDs of the LTA550HQ25 panel, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the operability of the electrolytic capacitors of the filter by the power of the backlight unit.
In case of breaks in the LED circuit, a complete disassembly of the panel is required, the LEDs are checked for an open circuit, as well as the reliability of the connections in the connectors and rations of the terminals.
It is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED, if you connect the probes in the forward direction, the red probe to the anode, and the black to the cathode. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
If the motherboard 310431366185 is faulty, first of all it is necessary to check all the linear stabilizers and power converters of its chips, and also, if necessary, update the software (software). Sometimes you can check the health of MB only by replacement.
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 - FUSION120, H5TQ2G63BFR, H5TQ2G83BFR 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 the TV works normally with external devices, but does not tune into television channels, the tuner SUT-RE214AN may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Remember! Attempts to self-repair by users of the PHILIPS 55PFL8008S TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual and schematic diagram 55PFL8008S/12 Chassis QFU1.2E LA
CHASSIS QFU1.2E LA FOR MODELS OF TV PHILIPS:
40PFL8008K, 40PFL8008S
42PFL6008H, 42PFL6008K, 42PFL6008S, 42PFL6158K, 42PFL6158S, 42PFL6188K, 42PFL6188S, 42PFL6198K, 42PFL6678K, 42PFL6678S, 42PFL7008H, 42PFL7008K, 42PFL7008S, 42PFL7008T, 42PFL7108H, 42PFL7108K, 42PFL7108S, 42PFL7108T 46PDL8908S, 46PFL8008K
47PFL6008H, 47PFL6008K, 47PFL6008S, 47PFL6158K, 47PFL6158S, 47PFL6188K, 47PFL6188S, 47PFL6198K, 47PFL6678K, 47PFL6678S, 47PFL7008H, 47PFL7008K, 47PFL7008S, 47PFL7108H, 47PFL7108K, 47PFL7108S
55PDL8908D, 55PDL8908S, 55PDL8908S, 55PFL6008H, 55PFL6008K, 55PFL6008S, 55PFL6008T, 55PFL6158K, 55PFL6158S, 55PFL6188K, 55PFL6188S, 55PFL6198K, 55PFL6678K, 55PFL6678S, 55PFL7008H, 55PFL7008K, 55PFL7008S, 55PFL7108H, 55PFL7108K, 55PFL7108S, 55PFL8008K, 55PFL8008S
60PFL6008H, 60PFL6008K, 60PFL6008S, 60PFL8708S
65PFL9708S
84PFL9708, 84PFL9708S
The appearance of MainBoard 310431366185 is shown in the figure below:310431366185
The weak point in the models of PHILIPS TVs assembled on the QFU1.2E LA chassis is the main board SSB (MainBoard), which usually refuses to work after two years of operation. Replacement required.
The cost of the board is quite high, which sometimes raises the question of the feasibility of repairs.
Despite the efforts of designers to complicate or exclude the possibility of repairing the board, there are still options for its restoration.
Attention to the masters !!! You should pay attention to the drop of compound from the bottom of the board. When trying to heat the board or reball of BGA chips, the compound must be completely removed. Otherwise, the paths will be closed, which will significantly complicate the further repair of the board.
310431366185 can be used in TVs:
PHILIPS 42PFL7008S/60 (Panel LC420EUF (AF)(F1)), PHILIPS 40PFL8008S/60 (Panel LTA400HL18 002), PHILIPS 42PFL6008S/60 (Panel LC420EUF (PF)(F1)), PHILIPS 42PFL7108S/60 (Panel LC420EUF PFF1), PHILIPS 47PFL6008S/60 (Panel LC470EUF (PF)(F1) code 430 p/n: 932230114682), PHILIPS 47PFL6008S/60 (Panel LC470EUF (PF)(F1) code 430 p/n: 932230114682), PHILIPS 47PFL7008S/60 (Panel LC470EUF PFF1 code 430 932230114682), PHILIPS 60PFL6008S/60 (Panel LC600EUD FEF2 code 439 p/n: 932230207682), PHILIPS 55PFL8008S/12 (Panel LTA550HQ25), PHILIPS 55PFL7108S/60 (Panel LC550EUF (PF)(F1)), PHILIPS 42PFL6678S/12 (Panel LC420EUF (PF)(F1)).
The appearance of the power supply
Key Features of PHILIPS 55PFL8008S:
Installed matrix (LED-panel) LTA550HQ25.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the PHILIPS 55PFL8008S TV are generated by the FSP194-4FS01 power supply module, or its analogs.
MainBoard - the main board (motherboard) is a module 310431366185, using chips FUSION120, H5TQ2G63BFR, H5TQ2G83BFR and others.
The SUT-RE214AN tuner provides TV reception and channel tuning.
