Technical description and composition of the PHILIPS 40PFT4109 TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 40PFT4109 / 60
Chassis / Version: TPN14.1E LA
Panel: TPT400LA-HM06 Rev. SC1F code: 009
LED backlight: CL-40-D307-V3
T-CON: Y13_MB7S60TS4LV0
LED driver (backlight): integrated into PSU
PWM LED driver: PF7903BS
MOSFET LED driver: AOTF4126
Power Supply (PSU): 715G6163-P0F-000-0020
PWM Power: LD7591T (PFC), SSC1S311 (PWM)
MOSFET Power: TK15A60U, STF24NM65N
MainBoard: 715G6094-M0G-000-004K (WK.1337.5) 006LP0258568C
IC MainBoard: NT72567BG, K9F1G08U0D, 24C128, STA381BWTR
Tuner: ST03CS-2-E
Control: IR: 715G6167-R01-000-004X
Specifications 40PFT4109
PHILIPS 40PFT4109
General repair guidelines for TV LCD LED
Possible malfunctions
- PHILIPS 40PFT4109 does not turn on and does not show any signs of operability at all. Does not blink indicators and does not respond to control buttons.
With such manifestations, the 715G6163-P0F-000-0020 power module usually fails. It is necessary to measure its output voltages, and if they are absent (full or partial), you should check the health of the power switches (TK15A60U, STF24NM65N) of the converters and rectifier diodes for a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the mains fuse and, less often, the current sensor at the source of the key are most often cut off.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode, or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damper circuits, or negative feedback elements in the stabilization circuit. PWM controllers LD7591T (PFC), SSC1S311 (PWM), in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new, or obviously working.
- 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.
Often in such cases, there is no LED backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the 715G6094-M0G-000-004K motherboard should be started by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). When repairing an MB board, you need to check its components NT72567BG, K9F1G08U0D, 24C128, STA381BWTR. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the ST03CS-2-E tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
We recommend the owners of the 40PFT4109 TV for repair only to qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
Service manual and schematic diagram 40PFT4109/60, 42PFT6309/60 Chassis TPN14.1E LA
PSU SCHEMATIC ------------> 715G6163 Power supply
The appearance of the MainBoard 715G6094-M0G-000-004K is shown in the figure below:715G6094-M0G-000-004K
The appearance of the power supply
Main features of the PHILIPS 40PFT4109 device:
Installed matrix (LED panel) TPT400LA-HM06 Rev. SC1F code: 009.
The matrix control uses the Timing Controller (T-CON) Y13_MB7S60TS4LV0.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the PF7903BS PWM controller. As power elements of the LED driver, keys of the AOTF4126 type are used.
The necessary supply voltages for all nodes of the PHILIPS 40PFT4109 television are generated by the 715G6163-P0F-000-0020 power module, or its analogs using LD7591T (PFC), SSC1S311 (PWM) microcircuits and power switches of the TK15A60U, STF24NM65N type.
MainBoard - the main board (motherboard) is a module 715G6094-M0G-000-004K, using chips NT72567BG, K9F1G08U0D, 24C128, STA381BWTR and others.
The ST03CS-2-E tuner provides television reception and channel tuning.