Technical description and composition of the PHILIPS 40PFS5073 TV, panel type and modules used. The composition of the modules.PHILIPS LED
Model: 40PFS5073 / 60
Chassis / Version: MSD3663-T5C1
Panel: K400WDK9
LED backlight: 4708-400000-A1213K31
LED driver (backlight): integrated into MainBoard
PWM LED driver: SO-8
MOSFET LED driver: TO-252
Power Supply (PSU): integrated into MainBoard
MainBoard: MSD3663-T5C1
IC MainBoard: SPI FLASH: GD25Q64
Tuner: ST43WS-2A-E (Si2151) & CDT-9NS16J-RD41 K-TU5 (DVB-S)
Specifications 40PFS5073
PHILIPS 40PFS5073
General recommendations for TV LCD LED repair
Possible malfunctions
- PHILIPS 40PFS5073 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light up or blink, the TV does not respond to the control buttons.
In such cases, the main power supply, the AC / DC converter of the mains voltage, which is combined with the MainBoard MSD3663-T5C1, may be faulty. Its output voltages should be measured and, in their absence, the serviceability of the power switches and rectifier diodes in the converters should be checked for possible breakdown.
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), 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 some of these cases, the malfunction is caused by the lack of display backlighting. The reason can sometimes be in the power supply of the LEDs, but more often in their malfunction (breakdown or breakage), sometimes in the violation of the contact connections of the LED strips.
To test the LED strips, in order 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 junctions in forward bias, you can sometimes detect the presence of a protective zener diode PN junction by connecting the probes in the opposite direction. If the zener diode is cut off or broken in K / Z, then the LED is faulty and needs to be replaced.
- 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 MSD3663-T5C1 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). Complicated repair of MB (SSB) board is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the SPI FLASH: GD25Q64. Malfunctions in BGA chips are usually easy to detect by warm-up.If there is no reception of television channels, but the TV is working properly from external devices, first of all, you need to check the supply voltage of the ST43WS-2A-E (Si2151) & CDT-9NS16J-RD41 K-TU5 (DVB-S) tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Attention to TV owners! Attempts to repair PHILIPS 40PFS5073 on your own are not recommended by the manufacturer and can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> PHILIPS 40PFS5073/60, Main: MSD3663-T5C1, Panel: K400WDK9
The appearance of the MainBoard MSD3663-T5C1 is shown in the figure below:
MSD3663-T5C1
The main features of the PHILIPS 40PFS5073 device:
Installed matrix (LED panel) K400WDK9.
To power the backlight LEDs, a converter combined with the MSD3663-T5C1 main board is used, controlled by the SO-8 PWM controller. TO-252 switches are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback converter circuit.
MainBoard - the main board (motherboard) is an MSD3663-T5C1 module, using SPI FLASH chips: GD25Q64 and others.
Tuner ST43WS-2A-E (Si2151) & CDT-9NS16J-RD41 K-TU5 (DVB-S) provides reception of television programs and tuning to channels.
PHILIPS 40PFS5073 TV with LCD K400WDK9, diagonal size 39.5 "(100 cm) 16: 9 format. The display technology of the model is implemented with LED backlighting.
The K400WDK9 sensor and the MainBoard MSD3663-T5C1 software provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics resolution at 1080p (Full HD). Supported media file formats: WMA, MPEG4, HEVC (H.265), MKV, JPEG.
Speaker power 12 W (2x6 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), AV, HDMI x2, USB. A headphone output is provided.
The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2 standards.
The TV uses a power supply unit as part of the MainBoard.
Dimensions: with stand 904x580x225 mm, without stand 904x521x81 mm.
TV weight: with stand: 5.7 kg, without stand: 5.6 kg.
Attention! PHILIPS 40PFS5073 LED TV panel K400WDK9 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.
