Technical description and composition of the PHILIPS 47PFL7666H TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 47PFL7666H / 12
Chassis / Version: Q552.2E LA
Panel: LC470EUF (SD) (F2)
LED backlight: 3660L-0369A 47 V6 Edge FHD REV1.0 1 R / L - TYPE
T-CON: 6870C-0358a
LED driver (backlight): integrated into PSU
PWM LED driver: DDA009
Power Supply (PSU): DPS-186FP 2722 171 90339
PWM Power: NCP1608B (PFC), S101, DDA010 (= ICE2QR0665 Standby), 2QS02G
MainBoard: 313912365182 WK1101.3 BD 313912365192 313929710801
IC MainBoard: PNX85537, 29F4C08ABADA, TPA3120D2
Tuner: TH2627
Control: WiFi: 8WUSN21..0B1G
Specifications 47PFL7666H
PHILIPS 47PFL7666H
General repair guidelines for TV LCD LED
Possible malfunctions
- The PHILIPS 47PFL7666H does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
In some of these cases, a malfunction is detected in the DPS-186FP power supply module. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches and rectifier diodes of the converters for the probability of a 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.
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) NCP1608B (PFC), S101, DDA010 (= ICE2QR0665 Standby), 2QS02G, if they do not have visible damage to the chassis and open fault between the terminals, are usually checked by replacement.
- 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.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the motherboard 313912365182 should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). When repairing an MB board, you need to check its components PNX85537, 29F4C08ABADA, TPA3120D2. 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.
If you suspect a malfunction of the TH2627 tuner, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding tuner pins.
Attention TV owners! Attempts at self-repair of PHILIPS 47PFL7666H are not recommended by the manufacturer and can lead to serious negative consequences!
Service manual and schematic diagram PHILIPS 47PFL7666H Chassis Q552.2E LA
The appearance of MainBoard 313912365182 is shown in the figure below:313912365182
313912365182 can be used in TVs:
PHILIPS 47PFL7606H/60 (Panel LC470EUF (SD)(F2)), PHILIPS 32PFL7606H/12 (Panel LC320EUF (SD)(F2)).
The appearance of the power supply
Main features of the PHILIPS 47PFL7666H device:
Installed matrix (LED-panel) LC470EUF (SD) (F2).
The matrix control uses the Timing Controller (T-CON) 6870C-0358a.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the DDA009 PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 47PFL7666H TV are generated by the DPS-186FP power module or its analogs using NCP1608B (PFC), S101, DDA010 (= ICE2QR0665 Standby), 2QS02G microcircuits.
MainBoard - the main board (motherboard) is a module 313912365182, using chips PNX85537, 29F4C08ABADA, TPA3120D2 and others.
The TH2627 tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC470EUF-SDF2
Type: a-Si TFT-LCD, Panel
Diagonal size: 47 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 1039.68x584.82 mm
Surface: Antiglare (Haze 10%), Hard coating (2H)
Brightness: 400 cd / m²
Contrast Ratio: 1600: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + FRC), CIE1931 72%
Response Time: 5.0 (Typ.) (G to G); 6 (MPRT)
Frequency: 120Hz + 120Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (4 ch, 8/10-bit), 92 pins
Voltage: 12.0V