Technical description and composition of the PHILIPS 47PFT5209 TV, panel type and modules used. The composition of the modules.PHILIPS LED
Model: 47PFT5209 / 60
Chassis / Version: TPN14.1E LA
Panel: LC470DUN (PG) (A1)
LED backlight: V14 DRT REV0.2 L1 / L2 / R1 / R2
T-CON: 6870C-0471D
LED driver (backlight): 6917L-0152B
PWM LED driver: LD7890GS
MOSFET LED driver: P3710BTF
Power Supply (PSU): 715G6338-P02-000-002S
PWM Power: LD7752B, LD7591T (PFC), LCS700LG
MOSFET Power: TK16A60W (PFC)
MainBoard: 715G6094-M01-002-004K
IC MainBoard: NT72567BG, K9F1G08U0D, 24C128, STA381BWTR
Tuner: ST03CS-2-E
Specifications 47PFT5209
LCD TV LED 47PFT5209 Year of issue: 2014
Screen diagonal: 47 "(119 cm)
Screen format: 16: 9
Resolution: 1920x1080
Refresh rate: 100 Hz
LED backlight: yes
HD Support: 1080p Full HD
Progressive scan: yes
TV standards: PAL, SECAM, NTSC
Digital tuner: DVB-T MPEG4, DVB-T2, DVB-C
Teletext: with 1000 pages memory
DTV formats: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p
Multimedia: MP3, WMA, MPEG4, MKV, JPEG
Stereo sound: yes
Sound power: 20W (2x10W)
Acoustics: two speakers
Interface: SCART, RGB, HDMI x2, USB
Headphone jack: yes
TV weight: with stand: 14.8 kg
without stand: 13.4 kg
Dimensions: with stand 1064x680x254 mm
without stand 1064x620x70 mm
PHILIPS 47PFT5209 General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- PHILIPS 47PFT5209 TV does not turn on and does not show any signs of operability at all. No response to the remote control and front panel control buttons.
In such cases, the fault should be looked for first of all in the power module 715G6338-P02-000-002S. Then you should measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of the power switches (TK16A60W (PFC)) and the rectifier diodes of the converters for a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually operate in an emergency mode in a short-circuit mode, and in case of a short circuit in the power elements of the primary circuit, the mains fuse often breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in 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) LD7752B, LD7591T (PFC), LCS700LG, in the absence of external damage and a short circuit between the terminals, are checked by replacing them with known good ones.
- There is no image, the screen is black, there is sound, sometimes you can see barely noticeable outlines of the image in the ambient light of the screen.
As a rule, in such cases there is no display backlight. Often the reason is a malfunction of the LEDs (open circuit, short circuit ...), or the connectors of the strips (strings), less often the LED driver turns out to be faulty.
When trying to detect a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is required to open PN junctions connected in series.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.
Repair or diagnostics of the 715G6094-M01-002-004K motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - NT72567BG, K9F1G08U0D, 24C128, STA381BWTR with new or known good ones. In cases where BGA technologies are used, defects are usually localized by heating.
If PHILIPS 47PFT5209 has no image, but there is sound, the display backlight often 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 LEDs requires disassembling the LCD panel - a process that requires experience and qualifications from the master. 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, light is visible through the holes in the panel case.
In this case, the panel may also be faulty - damage to the 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 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 the MainBoard with an oscilloscope, as well as synchronization signals to the 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.
Before changing the ST03CS-2-E tuner, if there is no possibility of tuning to television channels, you should make sure that there are supply voltages, which must be measured at the corresponding tuner terminals and check the software for correctness. The pulses of data exchange between the tuner and the processor can be monitored with an oscilloscope
Users and owners of TVs need to remember that attempts to repair the PHILIPS 47PFT5209 TV on their own without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> PHILIPS 47PFT5209 Chassis TPN14.1E LA
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Additional MainBoard RepairThe appearance of the MainBoard 715G6094-M01-002-004K is shown in the figure below:
715G6094-M01-002-004K
External view of the power supply
The main features of the PHILIPS 47PFT5209 device:
Installed matrix (LED panel) LC470DUN (PG) (A1).
Matrix control uses a Timing Controller (T-CON) 6870C-0471D.
The LED driver 6917L-0152B is used to power the backlight LEDs, it is controlled by the PWM controller LD7890GS. As power x elements of the LED driver, keys of the P3710BTF type are used.
The formation of the necessary supply voltages for all nodes of the PHILIPS 47PFT5209 TV is carried out by the 715G6338-P02-000-002S power module, or its analogs using LD7752B, LD7591T (PFC), LCS700LG microcircuits and TK16A60W (PFC) power switches.
MainBoard - the main board (motherboard) is a 715G6094-M01-002-004K module, using NT72567BG, K9F1G08U0D, 24C128, STA381BWTR chips and others.
The ST03CS-2-E tuner provides reception of television programs and tuning to channels.
PHILIPS 47PFT5209 LCD TV, 47 "(119 cm) diagonal 16: 9 format. The display technology of the model is implemented with LED backlight. The design and technical capabilities of the TV provide viewing of broadcasts and films in high quality HD at a resolution of 1920x1080 pixels. in graphic decomposition according to the standard 1080p (Full HD) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal formation 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 the NICAM stereo signal processing system and the Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), SCART, RGB, HDMI x2, USB. 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 able to receive TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: with stand 1064x680x254 mm, without stand 1064x620x70 mm.
TV weight: with stand: 14.8 kg, without stand: 13.4 kg.
Attention! The panel of the PHILIPS 47PFT5209 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.