Technical description and composition of the PHILIPS 46PFL8007T TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 46PFL8007T / 12
Chassis / Version: QFU1.1E LA
Panel: LTA460HQ17 (SMGK) B p / n: 932229485682
LED driver (backlight): integrated into PSU; 44.8V 960mA
PWM LED driver: 0Z9909TN x 2, LM358G
Power Supply (PSU): FSP163-4FS01 B 272217190677
PWM Power: FSB127H (3.3V Standby. 0V in slave mode), FAN7930C (PFC), SSC9522S (PWM resonant)
MainBoard: 310431365554 310432869191 ASS 2K12 FU EU7 / 8 T2 5HDMI RF, 310432869193 3104 313 65554
IC MainBoard: CPU: FUSION240; NAND Flash: 29F8G08ABABA; DRAM: H5TQ2G63BFR; SOUND: TAS5731P1; SPI Flash: M25P05-AVMN6; EEPROM: M24C64-WDW6
Tuner: SUT-RE214AN
Specifications 46PFL8007T
PHILIPS 46PFL8007T
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular PHILIPS 46PFL8007T / 12, it is advisable to start with a careful external examination of internal and external elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
If the 46PFL8007T TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some PHILIPS models. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself for no reason that you should look for when checking other elements of the primary circuit - electrolytic capacitors, PWM controller POK 3.3V STby0V in slave mode, which can only be checked by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the PHILIPS 46PFL8007T TV does not have an image, but there is sound, a malfunction in the LED backlight circuits of the LTA460HQ17 (SMGK) B 820400157831 932229485682 panel is likely. It is also necessary to check the operability of the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply unit) for excessive ESR.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
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.
If the motherboard ASS 2K12 FU EU7 / 8 T2 5HDMI RF 310432869191 YU 242.2 AI1.A 310432869193 is faulty, you must first check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
Service manual and schematic diagram 46PFL8007T/12 Chassis QFU1.1E LA
FOR MODELS: 40PFL7007H/12, 40PFL7007K/12, 40PFL7007T/12, 40PFL8007K/12, 40PFL8007T/12, 42PFL6907H/12, 42PFL6907K/12, 42PFL6907T/12, 46PFL7007H/12, 46PFL7007K/12, 46PFL7007T/12, 46PFL8007K/12, 46PFL8007T/12, 46PFL9707S/12, 46PFL9707T/12, 47PFL6907H/12, 47PFL6907K/12, 47PFL6907T/12, 55PFL7007H/12, 55PFL7007K/12, 55PFL7007T/12, 55PFL8007K/12, 55PFL8007T/12, 60PFL9607S/12, 60PFL9607T/12
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).
PSU Advanced
The 46PFL8007T / 12 is equipped with a FSP163-4FS01 power supply module using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the FAN7930C PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected directly to the network directly through open diodes, when the value of the charge current determines its reactance (about 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the PHILIPS 46PFL8007T device:
Installed matrix (LED-panel) LTA460HQ17 (SMGK) B p / n: 932229485682.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by a PWM controller 0Z9909TN x 2, LM358G.
The necessary supply voltages for all nodes of the PHILIPS 46PFL8007T TV are generated by the FSP163-4FS01 power supply module or its analogs using the FSB127H microcircuits (3.3V Standby. 0V in slave mode), FAN7930C (PFC), SSC9522S (PWM resonant).
MainBoard - the main board (motherboard) is a module 310431365554, using CPU chips: FUSION240; NAND Flash: 29F8G08ABABA; DRAM: H5TQ2G63BFR; SOUND: TAS5731P1; SPI Flash: M25P05-AVMN6; EEPROM: M24C64-WDW6 and others.
The SUT-RE214AN tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA460HQ17
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: 450 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (10-bit), CIE1931 70%
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