Technical description and composition of the PHILIPS 40PFL5527H TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 40PFL5527H / 60
Chassis / Version: Q552.4E LA
Panel: LTA400HV04
LED backlight: LJ64-03514A
T-CON: PH 120PSQBC4LV1.0
LED driver (backlight): integrated into PSU
PWM LED driver: DDA009
Power Supply (PSU): DPS-119AP
PWM Power: DDA010 (Standby), 1608B (PFC), 2QS02G
MainBoard: WK1147.5 313912365313v2 MB 65313V2 SB
IC MainBoard: TAS5731, SPARTAN-6, RT8293AH (8pin)
Tuner: SUT-RE214AN
Specifications 40PFL5527H
PHILIPS 40PFL5527H
General repair guidelines for TV LCD LED
Possible malfunctions
- The PHILIPS 40PFL5527H TV does not turn on and does not show any signs of turning on, it does not respond to the control buttons or the remote control.
Most often, with such manifestations, the main power module DPS-119AP is found to be faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for a possible partial or complete breakdown.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during short circuit in the elements of the primary circuit, the mains fuse 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 (OOS) stabilization circuits. PWM controllers (PWM) DDA010 (Standby), 1608B (PFC), 2QS02G, 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, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the WK1147.5 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Board repair and replacement of TAS5731, SPARTAN-6, RT8293AH (8pin) microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
The malfunction of the SUT-RE214AN tuner is established after checking the software and all 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! For users and owners of 40PFL5527H TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
Service manual and schematic diagram 40PFL5527T/60 Chassis Q552.4E LA
PSU ------------> DPS-119AP A Power Supply schematic diagram
The appearance of the MainBoard WK1147.5 is shown in the figure below:WK1147.5
The appearance of the power supply
Main features of the PHILIPS 40PFL5527H device:
Installed matrix (LED-panel) LTA400HV04.
The matrix control uses the Timing Controller (T-CON) PH.
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 40PFL5527H TV are generated by the DPS-119AP power module or its analogs using DDA010 (Standby), 1608B (PFC), 2QS02G microcircuits.
MainBoard - the main board (motherboard) is a WK1147.5 module, using TAS5731, SPARTAN-6, RT8293AH (8pin) chips and others.
The SUT-RE214AN tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA400HV04
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 885.6x498.15 mm
Surface: Antiglare (Haze 2%)
Brightness: 400 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (8-bit + Hi-FRC), CIE1931 70%
Response Time: 8 (Max.) (G to G)
Frequency: 120Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V