Technical
description and composition of the PHILIPS 40PFT4509 TV, type of panel
and applicable modules. The composition of the modules.PHILIPS LED
Model: 40PFT4509 / 60
Chassis / Version: TPM14.1E LA
Panel: TPT400LA-J6PE1 REV: C1A
LED backlight: GJ-DLEDII P5-400-D409-V7
T-CON: V390HJ1-XRME1, V390HJ5-XCPE1
LED driver (backlight): integrated into PSU
PWM LED driver: LD7890GS
MOSFET LED driver: EMD60N10F
Power Supply (PSU): 715G6353-P0B-001-0020 // 715G6353-P01-001-002H
PWM Power: LD7591T (PFC), SSC1S311 (PWM)
MOSFET Power: TK15A60U (PFC), TK13A65U
MainBoard: 715G6165-M01-000-005X
IC MainBoard: CPU: MT5580PUEI; DRAM: K4B4G1646B-HCK0; NAND Flash: TC58NVG2S3ETAI0; SPI Flash: CAT24C128WI
Tuner: TTDSY-G720D
Control: IR: 715G6167-R01-000-004X
Specifications 40PFT4509
PHILIPS 40PFT4509
General repair guidelines for TV LCD LED
TV PHILIPS 40PFT4509 / 60, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the 40PFT4509 TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power supply module. In some cases, there may be a malfunction only in standby power. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
Power switches in pulsed power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
If the PHILIPS 40PFT4509 TV does not have an image, but there is sound, a malfunction in the backlight circuits of the LED panel TPT400LA-J6PE1 REV: C1A is likely.
The lack of backlight often occurs due to an open circuit in the LED circuit. There is a need for disassembling the panel and checking the LEDs themselves, as well as the same contact connections in the connectors and rations of the terminals.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
Diagnostics and repair of the 715G6165-M01-000-005X motherboard usually begins with a test of the performance of the stabilizers and power converters of the module chips. In some cases, a software update is required.
Once again, remind users! Attempts to independently repair the PHILIPS 40PFT4509 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual and schematic diagram 32PHH4309/60 Chassis TPM14.1E LA
The appearance of the MainBoard 715G6165-M01-000-005X is shown in the figure below:715G6165-M01-000-005X
715G6165-M01-000-005X can be used in TVs:
PHILIPS 42PFT6309/60 (Panel LC420DUN (PG)(P1) CODE 106), PHILIPS 40PFT4509/60 (Panel TPT400LA-J6PE1 REV:C1A), PHILIPS 42PFT6569/60 (Panel LC420DUN (PG)(A1)), PHILIPS 32PHT4509/60 (Panel TPT315B5-DXJSFE Rev-S1Z code 112).
PSU Advanced
The power module 715G6353-P0B-001-0020 is made using the Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced into the power supply by the device. The PFC node is a Step-Up Converter based on the LD7591T PWM controller, which evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of an increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 40PFT4509 device:
Installed matrix (LED panel) TPT400LA-J6PE1 REV: C1A.
The matrix control uses the Timing Controller (T-CON) V390HJ1-XRME1.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the LD7890GS PWM controller. As power elements of the LED driver, keys of the type EMD60N10F are used.
The necessary supply voltages for all nodes of the PHILIPS 40PFT4509 television are generated by the 715G6353-P0B-001-0020 power supply module or its analogs using the LD7591T (PFC), SSC1S311 (PWM) microcircuits and power switches of the TK15A60U (PFC), TK13A65U type.
MainBoard - the main board (motherboard) is a 715G6165-M01-000-005X module, using CPU chips: MT5580PUEI; DRAM: K4B4G1646B-HCK0; NAND Flash: TC58NVG2S3ETAI0; SPI Flash: CAT24C128WI and others.
The TTDSY-G720D tuner provides TV reception and channel tuning.