Technical description and composition of the PHILIPS 47PFT5609 TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 47PFT5609 / 60
Chassis / Version: TPM14.1E LA
Panel: LC470DUN
T-CON: 6870C-0471D
LED driver (backlight): 6917L-0152B KPW-LE47FC-O A REV0.6
PWM LED driver: LD7890GS
Power Supply (PSU): 715G6338-P02-000-002S
PWM Power: LD7752B, LD7591T (PFC), LCS700LG
MainBoard: 715G6165-M02-000-005N
IC MainBoard: MT5580PUEI; DRAM: K4B4G1646B-HCK0; NAND Flash: TC58NVG2S3ETAI0; SPI Flash: CAT24C128WI
Tuner: TDSY-G720D
Specifications 47PFT5609
PHILIPS 47PFT5609
General repair guidelines for TV LCD LED
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the 715G6338-P02-000-002S power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of standby power. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM LD7752B, LD7591T (PFC), LCS700LG from the manufacturer.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but the sound has other functions that work, there is a high probability of a malfunction of the display backlight LEDs or the LED driver (power converter for the LC470DUN backlight panel).
A malfunction in the backlight circuits often occurs due to an open in the power circuit of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the rations of their terminals, as well as the reliability of the connections in the connectors and rations of the terminals.
To check the health in 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 individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black 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. A zener diode PN junction indirectly indicates a LED-a
Repair or diagnostics of the 715G6165-M02-000-005N motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, you should update the software (software).
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - MT5580PUEI; DRAM: K4B4G1646B-HCK0; NAND Flash: TC58NVG2S3ETAI0; SPI Flash: CAT24C128WI and defective chips replace with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
If the TV works normally from external devices, but does not tune into television channels, the TDSY-G720D tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
It should be remembered! Attempts to repair the PHILIPS 47PFT5609 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!
Service manual and schematic diagram 47PFT5609/60 Chassis TPM14.1E LA
The appearance of the MainBoard 715G6165-M02-000-005N is shown in the figure below:715G6165-M02-000-005N
PSU Advanced
The 47PFT5609 / 60 model uses the 715G6338-P02-000-002S power supply unit using the PFC (Power Factor Correction) node - an active filter of higher harmonics of the current consumption. In fact, it is a boost converter based on the LD7591T PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the PHILIPS 47PFT5609 device:
Installed matrix (LED-panel) LC470DUN.
The matrix control uses the Timing Controller (T-CON) 6870C-0471D.
The LED driver 6917L-0152B is used to power the backlight LEDs, it is controlled by the LD7890GS PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 47PFT5609 television are generated by the power supply module 715G6338-P02-000-002S, or its analogs using microcircuits LD7752B, LD7591T (PFC), LCS700LG.
MainBoard - the main board (motherboard) is a 715G6165-M02-000-005N module, using MT5580PUEI chips; DRAM: K4B4G1646B-HCK0; NAND Flash: TC58NVG2S3ETAI0; SPI Flash: CAT24C128WI and others.
The TDSY-G720D tuner allows you to receive television programs and tune to channels.