Technical description and composition of the PHILIPS 40PFL5527T TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 40PFL5527T / 60
Chassis / Version: Q552.4E LA
Panel: LTA400HV04 001 code 396 p / n: 932229092682
LED backlight: 7030L 56LED
T-CON: 120PSQBC4LV1.0
LED driver (backlight): integrated into PSU
PWM LED driver: DDA009
Power Supply (PSU): DPS-119AP A 272217190581
PWM Power: DDA010 (Standby), 1608B (PFC), 2QS02G
MainBoard: 313929713562, 313929716961 YU 245.1 AI1.C
IC MainBoard: TAS5731, SPARTAN-6, RT8293AH
Tuner: SUT-RE214AN
Control: Remote: 2422 549 90467, WiFi: WUBA-618GN173WW
Specifications 40PFL5527T
PHILIPS 40PFL5527T
General repair guidelines for TV LCD LED
PHILIPS 40PFL5527T / 60, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. Visible damage to elements can sometimes indicate the direction of the search for a defect even before the necessary measurements are taken. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
If the 40PFL5527T TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some PHILIPS models. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
If, when you turn on the TV, the image appears and immediately disappears, or is missing initially when you turn on, but the sound has other functions that work, there is a high probability of a malfunction of the LED driver (power converter for the LED backlight panel LTA400HV04 001 932229092682 code 396). In such cases, the general power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
A break in the line of LEDs connected in series cannot be detected with a multimeter or tester without disassembling the panel. To open all the transitions, several tens of volts are needed, and it is best to use a current source for such purposes.
Repair of the motherboard 313929716961 313929713562, YU 245.1 AI1.C must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the varicaps of the tuner SUT-RE214AN, which is usually within 30-33V, as well as other supply voltages at the terminals of the tuner.
Attention! For users and owners of 40PFL5527T TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend 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 MainBoard 313929713562 is shown in the figure below:313929713562
313929713562 can be used in TVs:
PHILIPS 40PFL5507T/60 (Panel LTA400HV04 001 code 396 p/n: 932229092682 ), PHILIPS 40PFL5527T/60 (Panel LTA400HV04 001 code 396 p/n: 932229092682), PHILIPS 46PFL5537T/60 (Panel LTA460HW04).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the DPS-119AP module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the 1608B PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering was applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 40PFL5527T device:
Installed matrix (LED-panel) LTA400HV04 001 code 396 p / n: 932229092682.
The matrix control uses the Timing Controller (T-CON) 120PSQBC4LV1.0.
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 40PFL5527T TV are generated by the DPS-119AP power supply module or its analogs using DDA010 (Standby), 1608B (PFC), 2QS02G microcircuits.
MainBoard - the main board (motherboard) is a module 313929713562, using TAS5731, SPARTAN-6, RT8293AH 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