Technical description and composition of the PHILIPS 46PFL8008S TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 46PFL8008S / 60
Chassis / Version: QFU1.2E LA
Panel: LTA460HQ23
T-CON: CTRL BOARD 13Y_SNB240LABC4LV0.0
LED driver (backlight): integrated into PSU
Power Supply (PSU): FSP163-4FS02 2722 171 90779 REV: 00
PWM Power: PWM
MainBoard: 310432880981 3104 313 66124
IC MainBoard: FUSION120
Tuner: SUT-RE214AN
Specifications 46PFL8008S
PHILIPS 46PFL8008S
General repair guidelines for TV LCD LED
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the FSP163-4FS02 2722 171 90779 REV: 00 power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of standby power. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should begin by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM PWM chip from the manufacturer.
If the PHILIPS 46PFL8008S has no image, there is sound and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the LTA460HQ23 panel, or their power converter - LED driver. Sometimes, when turned on, the image appears and immediately disappears. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the backlight unit.
The lack of backlight often occurs due to an open circuit in the LED circuit. There is a need for disassembling the panel and checking the LEDs themselves, as well as the same contact connections in the connectors and rations of the terminals.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
Diagnostics and repair of the motherboard 310432880981 3104 313 66124 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.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the SUT-RE214AN tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Remember! Attempts to self-repair by users of the PHILIPS 46PFL8008S TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual and schematic diagram 46PFL8008S/60 Chassis QFU1.2E LA
CHASSIS QFU1.2E LA FOR MODELS 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 310432880981 is shown in the figure below:310432880981
The weak point in the PHILIPS TV models 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.
The appearance of the power supply
Main features of the PHILIPS 46PFL8008S device:
Installed matrix (LED-panel) LTA460HQ23.
The matrix control uses the Timing Controller (T-CON) CTRL.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the PHILIPS 46PFL8008S TV are generated by the FSP163-4FS02 power supply module or its analogs using PWM microcircuits.
MainBoard - the main board (motherboard) is a module 310432880981, using FUSION120 chips and others.
The SUT-RE214AN tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA460HQ23
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Surface: Glare (Haze 0%), Hard coating (2H)
Brightness: 500 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (10-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 240Hz
Lamp Type: WLED Without Driver
Signal Interface: V-by-One 8 lane, 51 pins
Voltage: 12.0V