Technical description and composition of the PHILIPS 47PFL4606H TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 47PFL4606H / 60
Chassis / Version: TPM7.1E LA
Panel: LC470WUH (SC) (B2) p / n: 9322 283 76682
LED driver (backlight): integrated into PSU
PWM LED driver: UBA2071AT
MOSFET LED driver: TF10N60
Trans LED driver: 080GL52T929 TMS94876CT
Power Supply (PSU): 715G4546-P03-H20-003E
PWM Power: TOP264VG, FAN6961 (PFC), NCP1271 (Standby)
MainBoard: 715G4481-M02-000-005B (WK1110)
IC MainBoard: CPU: MT5395LHGJ, DDR: NT5CB64M16AP, Nand: HY27UF082G2B, SPI Flash: MX25L4005AMI-12G
Tuner: ENV57U09D5F
Specifications 47PFL4606H
PHILIPS 47PFL4606H
General repair guidelines for TV LCD LED
Possible malfunctions
- The PHILIPS 47PFL4606H TV does not turn on, does not respond to the remote control and the control panel buttons, does not light up or blink indicators.
In such cases, the malfunction should be sought first in the 715G4546-P03-H20-003E power module. It is necessary to measure its output supply voltages, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM) TOP264VG, FAN6961 (PFC), NCP1271 (Standby), if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The 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. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the 715G4481-M02-000-005B motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace 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 - CPU: MT5395LHGJ, DDR: NT5CB64M16AP, Nand: HY27UF082G2B, SPI Flash: MX25L4005AMI-12G and replace failed chips 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.
The malfunction of the tuner ENV57U09D5F is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Attention to users! Self-repair of a PHILIPS 47PFL4606H TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
Service manual and schematic diagram 47PFL4606H/60 Chassis TPM7.1E LA
The appearance of the MainBoard 715G4481-M02-000-005B is shown in the figure below:715G4481-M02-000-005B
The appearance of the power supply
Main features of the PHILIPS 47PFL4606H device:
Installed matrix (LED-panel) LC470WUH (SC) (B2) p / n: 9322 283 76682.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a UBA2071AT PWM controller. The transformer 080GL52T929 TMS94876CT is installed in the LED driver converter. As the power elements of the LED driver, keys of the type TF10N60 are used.
The necessary supply voltages for all nodes of the PHILIPS 47PFL4606H TV are generated by the 715G4546-P03-H20-003E power module, or its analogs using TOP264VG, FAN6961 (PFC), NCP1271 (Standby) microcircuits.
MainBoard - the main board (motherboard) is a 715G4481-M02-000-005B module, using CPU chips: MT5395LHGJ, DDR: NT5CB64M16AP, Nand: HY27UF082G2B, SPI Flash: MX25L4005AMI-12G and others.
The ENV57U09D5F tuner provides TV reception and channel tuning.