Technical description and composition of the PHILIPS 40PFL5007H TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 40PFL5007H / 12
Chassis / Version: Q552.4E LA
Panel: LTA400HV04-001
LED backlight: 7030L 56LED
LED driver (backlight): integrated into PSU
PWM LED driver: DDA009
Power Supply (PSU): DPS-119AP
PWM Power: DDA010 (Standby), 1608B (PFC), 2QS02G
MainBoard: 313929713464
IC MainBoard: PNX85500, M25P05-AVMN6, TS489IST, TAS5731PHP
Tuner: SUT-RE214Z
Specifications 40PFL5007H
PHILIPS 40PFL5007H
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The PHILIPS 40PFL5007H 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 such cases, the malfunction should be sought first in the DPS-119AP power supply module. 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 a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers DDA010 (Standby), 1608B (PFC), 2QS02G, in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
As a rule, in such cases there is no display backlight. 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 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, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the 313929716801 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software).
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the Tuner tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Attention! For users and owners of 40PFL5007H 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 40PFL5007H/12 Chassis Q552.4E LA
PSU ----------------> DPS-119AP A Power Supply schematic diagram
The appearance of the power supplyMain features of the PHILIPS 40PFL5007H device:
The matrix (LED panel) LTA400HV04-001 is installed.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the DDA009 PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 40PFL5007H 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 module 313929713464, using chips PNX85500, M25P05-AVMN6, TS489IST, TAS5731PHP and others.
The SUT-RE214Z tuner provides television reception and channel tuning.