REPAIRING / SERVICING TV PHILIPS 47PFL4307T

 Technical description and composition of the PHILIPS 47PFL4307T TV, panel type and modules used. The composition of the modules.
PHILIPS LED
Model: 47PFL4307T / 12
Chassis / Version: Q552.4E LA
Panel: LC470EUE (SE) (F2)
T-CON: 6870C-0401C
LED driver (backlight): integrated into PSU
Power Supply (PSU): HR-PSLS47-3 PLDH-P106B
MainBoard: 313929715701
IC MainBoard: RT8293AH
Tuner: SUT-RE214AN
Specifications 47PFL4307T
PHILIPS 47PFL4307T
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- PHILIPS 47PFL4307T TV does not turn on, does not respond to the remote control and control panel buttons, does not light or blink indicators.
With similar manifestations, in some cases, the power supply module HR-PSLS47-3 is faulty. Its output voltages should be measured and, in their absence, the power switches and rectifier diodes should be checked for the probability of a short circuit in the converters.
In case of breakdowns in the secondary circuits, the converter can operate in short-circuit mode, and in case of short-circuit in the elements of the primary circuit, the mains fuse usually breaks off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can disable it in the key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying the PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and a short circuit between the terminals, are checked by replacing them with a known good one.
- There is no picture, but there is sound and all other TV functions are working. The image sometimes appears for a second immediately after switching on and disappears.
In such cases, the most likely malfunction of the LED panel backlighting elements. The reason may be in the breakage of the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the strings connectors,
To check the health of the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED separately with a simple Chinese multimeter (powered by 9 volts) in the P-N transition test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black one to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. The serviceability of the PN junction of the Zener diode indirectly indicates the serviceability of the LED-a.

If the PHILIPS 47PFL4307T has no picture, but there is sound, often the LCD backlight LC470EUE (SE) (F2) simply does not work. Moreover, in LED TVs, the LEDs inside the panel usually fail, less often the LED driver.
In such cases, you can see a barely noticeable image with a successful hit of external light on the screen.
Replacing the LEDs requires disassembling the LC470EUE LCD panel, a process that requires experience and qualifications from the technician. We do not recommend doing such work on your own to the owners of TVs and craftsmen who do not have experience in repairing LCD panels

If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV you can see the light through the holes in the panel case.
In this case, the panel may also be faulty - damage to strips, loops, for example, as a result of moisture ingress after unsuccessful washing of the screen, the T-CON (Timing Controller) board may be faulty. But often the main board MainBoard 313929715701 also turns out to be faulty, a software failure is also possible.
Then, first of all, you need to check the panel supply voltage, the fuses on the T-CON board, as well as the supply and reference voltages of the column and line drivers - VGH, VGL, Vcom.

If these measurements are within normal limits, it is necessary to trace the passage of LVDS signals from MainBoard 313929715701 with an oscilloscope, as well as synchronization signals to loops with drivers.
Flooded or unsuccessfully washed screens of LED TVs can be restored, in about half of the cases, usually if significant damage has not formed in the loops and panel strips.

- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the motherboard 313929715701 should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) elements of the MainBoard - RT8293AH. In cases where a BGA processor is used, its malfunction is usually detected by a local warm-up method.
The malfunction of the SUT-RE214AN tuner is established after checking the software and all supply voltages at its outputs. The data exchange of the tuner with the processor via the I2C bus can be monitored with an oscilloscope.

Remember! Attempts to self-repair the PHILIPS 47PFL4307T TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    PHILIPS 47PFL4307T Chassis Q552.4E LA for models: 26PFL4007H/12, 26PFL4007K/12, 26PFL4007T/12, 32PFL4007H/12, 32PFL4007H/60, 32PFL4007K/12, 32PFL4007M/08, 32PFL4007T/12, 32PFL4007T/60, 32PFL4027H/12, 32PFL4027H/60, 32PFL4027K/12, 32PFL4027T/12, 32PFL4027T/60, 32PFL4037H/12, 32PFL4037H/60, 32PFL4037K/12, 32PFL4037T/12, 32PFL4037T/60, 32PFL4047T/12, 32PFL5007H/12, 32PFL5007H/60, 32PFL5007K/12, 32PFL5007M/08, 32PFL5007T/12, 32PFL5007T/60, 32PFL5507H/12, 32PFL5507H/60, 32PFL5507K/12, 32PFL5507M/08, 32PFL5507T/12, 32PFL5507T/60, 37PFL4007H/12, 37PFL4007K/12, 37PFL4007M/08, 37PFL4007T/12, 37PFL4007T/60, 40PFL5007H/12, 40PFL5007H/60, 40PFL5007K/12, 40PFL5007M/08, 40PFL5007T/12, 40PFL5007T/60, 40PFL5507H/12, 40PFL5507H/60, 40PFL5507K/12, 40PFL5507M/08, 40PFL5507T/12, 40PFL5507T/60, 40PFL5527H/12, 40PFL5527H/60, 40PFL5527K/12, 40PFL5527M/08, 40PFL5527T/12, 40PFL5527T/60, 40PFL5537H/12, 40PFL5537H/60, 40PFL5537K/12, 40PFL5537M/08, 40PFL5537T/12, 40PFL5537T/60, 42PFL4007H/12, 42PFL4007K/12, 42PFL4007M/08, 42PFL4007T/12, 42PFL4007T/60, 42PFL4047T/12, 42PFL4307H/12, 42PFL4307K/12, 42PFL4307T/12, 42PFL4317K/12, 46PFL5007H/12, 46PFL5007K/12, 46PFL5007M/08, 46PFL5007T/12, 46PFL5507H/12, 46PFL5507H/60, 46PFL5507K/12, 46PFL5507M/08, 46PFL5507T/12, 46PFL5507T/60, 46PFL5527H/12, 46PFL5527H/60, 46PFL5527K/12, 46PFL5527M/08, 46PFL5527T/12, 46PFL5527T/60, 46PFL5537H/12, 46PFL5537H/60, 46PFL5537K/12, 46PFL5537M/08, 46PFL5537T/12, 46PFL5537T/60, 47PFL4007H/12, 47PFL4007H/60, 47PFL4007K/12, 47PFL4007M/08, 47PFL4007T/12, 47PFL4007T/60, 47PFL4037T/12, 47PFL4047T/12, 47PFL4307H/12, 47PFL4307K/12, 47PFL4307T/12, 55PFL5507H/12, 55PFL5507H/60, 55PFL5507K/12, 55PFL5507M/08, 55PFL5507T/12, 55PFL5507T/60, 55PFL5527H/12, 55PFL5527K/12, 55PFL5527M/08, 55PFL5527T/12, 55PFL5537H/12, 55PFL5537K/12, 55PFL5537M/08, 55PFL5537T/12.

 The main features of the PHILIPS 47PFL4307T device:

The matrix (LED panel) LC470EUE (SE) (F2) is installed.
Matrix control uses the Timing Controller (T-CON) 6870C-0401C.
A converter combined with a power supply is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the PHILIPS 47PFL4307T TV is carried out by the HR-PSLS47-3 power module, or its analogs.
MainBoard - the main board (motherboard) is a 313929715701 module, using RT8293AH microcircuits and others.
The SUT-RE214AN tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC470EUE-SEF2
Type: a-Si TFT-LCD, Panel
Diagonal size: 47 inch
Resolution: 1920x1080, FHD
Display Mode: IPS, Normally Black, Transmissive
Active Area: 1039.68x584.82 mm
Surface: Antiglare (Haze 1%), Hard coating (2H)
Brightness: 360 cd / m²
Contrast Ratio: 1400: 1
Display Colors: 16.7M (8-bit), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V

PHILIPS 47PFL4307T TV with LCD LC470EUE, diagonal size 47 "(119 cm) 16: 9. The required brightness of the screen 360 cd / m2 is provided by LED backlight. Dynamic contrast ratio of 500,000: 1 is achieved by special control of the LEDs. In this model Edge LED side illumination is used.
There is support for 3D images using polarization technology.
The LC470EUE sensor and MainBoard 313929715701 software provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics resolution at 1080p (Full HD).
The 47PFL4307T TV is equipped with SMART software and the ability to work on the Internet. The connection to the network can be carried out via Wi-Fi wireless connection. The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 20 W (2x10 W) is provided by two speakers. Uses NICAM stereo processing system and Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), audio x2, component, SCART, RGB, VGA, HDMI x4, USB x3, Ethernet (RJ-45). A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The power consumed when operating from the mains is 54 W. HR-PSLS47-3 power supply.
Dimensions: with stand 1088x690x260 mm, without stand 1088x651x43 mm.
TV weight: with stand: 19 kg, without stand: 14.95 kg.
Attention! The LC470EUE (SE) (F2) panel of the PHILIPS 47PFL4307T LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.