Technical description and composition of the PHILIPS 40PFL5537T TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 40PFL5537T / 60
Chassis / Version: Q552.4E LA
Panel: LTA400HV04
LED backlight: 40-LEFT LJ64-03514A, SLED 2012SGS40 7030L 56 REV1.0
T-CON: PH_120PSQBC4LV1.0
LED driver (backlight): integrated into PSU
PWM LED driver: DDA009
Power Supply (PSU): DPS-119AP A, 2950297604, 2722 171 90581
PWM Power: 2QS02G, DDA010 (Standby), 1608B (PFC)
MainBoard: 65323V2 - 313929713694 (3139 297 13694) - 3139 123 65323v2-MB-65333v2-SB WK1148.1
IC MainBoard: CPU: PNX85500; NAND Flash: H27U4G8F2D; SPI Flash: M25P05; SOUND: TAS5731PHP;
Tuner: SUT-RE214Z
Control: IR: 272217190532, Wi-Fi: WUBA-618GN173WW
Specifications 40PFL5537T
PHILIPS 40PFL5537T
General repair guidelines for TV LCD LED
Possible malfunctions
- The PHILIPS 40PFL5537T does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
With such manifestations, the DPS-119AP power module is often faulty. First of all, it is necessary to check the operation of the standby converter on the PWM controller DDA010 (Standby). It is also necessary to verify the presence of secondary voltages of the main source and PFC in the operating mode and, if not, check their power switches and rectifier diodes for a possible short circuit. The performance of the PFC unit is checked by measuring the voltage (380-400V) on the electrolytic capacitor of the power rectifier filter.
In case of breakdowns in the secondary circuits, any converter can emergencyly operate in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power key can be PWM (PWM) 2QS02G, DDA010 (Standby), 1608B (PFC). It is checked only by replacement with a known good one.
- 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.
In most of these cases, a malfunction is detected in the nodes and backlight elements 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 should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a failure, the zener diode PN junction 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 motherboard (SSB) 65323V2 should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: PNX85500; NAND Flash: H27U4G8F2D; SPI Flash: M25P05; SOUND: TAS5731PHP; It requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
Before replacing the SUT-RE214Z tuner, if there is no tuning for ether or cable channels, you must first check the software and the supply voltage at its terminals. It is also necessary to verify with the help of an oscilloscope that the tuner and processor can exchange data via the I2C bus.
Attention to users! Self-repair of a PHILIPS 40PFL5537T TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
Service manual and schematic diagram 40PFL5527T/60 Chassis Q552.4E LA
PSU --------------------------> DPS-119AP A Power Supply schematic diagram.
The appearance of the MainBoard 65323V2 is shown in the figure below:65323V2
65323V2 can be used in TVs:
PHILIPS 40PFL5537T/60 (Panel LTA400HV04), PHILIPS 42PFL4007T/60 (Panel LC420EUE (SE)(M2)).
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 were 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 40PFL5537T device:
Installed matrix (LED-panel) LTA400HV04.
The matrix control uses the Timing Controller (T-CON) PH_120PSQBC4LV1.0.
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 40PFL5537T TV are generated by the DPS-119AP power module, or its analogs using 2QS02G, DDA010 (Standby), 1608B (PFC) microcircuits.
MainBoard - the main board (motherboard) is a module 65323V2, using CPU chips: PNX85500; NAND Flash: H27U4G8F2D; SPI Flash: M25P05; SOUND: TAS5731PHP; and others.
The SUT-RE214Z tuner provides television 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