Technical description and composition of the PHILIPS 47PFL7403D TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 47PFL7403D / 10
Chassis / Version: Q529.1E LA
Panel: LC470WUF (SA) (A1)
T-CON: 6870C-0201C
LED driver (backlight): integrated into PSU
Power Supply (PSU): PLHL-T722A PLHL-T801A (UD) 2300KEG033A-F 2722 171 00644 080905
PWM Power: FSQ510
MainBoard: 3104.303.51026 3104.313.62146. S310432854966
IC MainBoard: PNX8541E / 2414, STI7101BWC, EDD2516AETA, M29W640FT70N6, ISP1564HL
Tuner: TD1716F / BHXP-3
Specifications 47PFL7403D
PHILIPS 47PFL7403D
General repair guidelines for TV LCD LED
Possible malfunctions
- The PHILIPS 47PFL7403D 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.
Often in such cases, the PLHL-T722A power 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 and rectifier diodes of the converters for a possible short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWMs) of the FSQ510, if they do not have visible damage to the case and open fault between the terminals, are usually checked by replacement.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
As a rule, in such cases there is no display backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the 3104.303.51026 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). Board repair and chip replacement PNX8541E / 2414, STI7101BWC, EDD2516AETA, M29W640FT70N6, ISP1564HL 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 the TV works normally from external devices, but does not tune into television channels, the TD1716F / BHXP-3 tuner 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.
Attention to users! Self-repair of a PHILIPS 47PFL7403D TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
The appearance of MainBoard 3104.303.51026 is shown in the figure below:3104.303.51026
3104.303.51026 can be used in TVs:
PHILIPS 32PFL7623D/10 (Panel LC320WXN-SAB1 code 136), PHILIPS 32PFL9603D/10 (Panel LK315D3LZ43), PHILIPS 32PFL9613 (Panel 32 ), PHILIPS 37PFL9603D/10 (Panel LC370WUF-SAB1 p/n: 932226169682), PHILIPS 37PFL9603D/10 (Panel LC370WUF SAB1 (LGPH) code 141), PHILIPS 42PFL7403S/60 (Panel p/n: 932225845000), PHILIPS 42PFL7623D/10 (Panel LC420WUE - SAA1), PHILIPS 42PFL9703D/10 (Panel LC420WUF-SAC1), PHILIPS 42PFL9703D/10 (Panel LC420WUF-SAC1 code 143), PHILIPS 42PFL9803H/10 (Panel T420HW02 V.1 code 149 p/n: 932226404682 ).
The appearance of the power supply
Main features of the PHILIPS 47PFL7403D device:
Installed matrix (LED-panel) LC470WUF (SA) (A1).
The matrix control uses the Timing Controller (T-CON) 6870C-0201C.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the PHILIPS 47PFL7403D TV are generated by the PLHL-T722A power supply module or its analogs using FSQ510 microcircuits.
MainBoard - the main board (motherboard) is a module 3104.303.51026, using chips PNX8541E / 2414, STI7101BWC, EDD2516AETA, M29W640FT70N6, ISP1564HL and others.
The tuner TD1716F / BHXP-3 provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC470WUF-SAA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 47 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 1039.68x584.82 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 1.07B (8-bit + Dithering)
Response Time: 5 (MPRT)
Frequency: 120Hz
Lamp Type: 22 pcs CCFL Without Driver
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V