Technical description and composition of the PHILIPS 40PFL4508T TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 40PFL4508T / 60
Chassis / Version: TPM10.1E LA
Panel: LTA400HF30 001 SAMSUNG code 186 p / n: 99659004071
T-CON: 13NNB_SQ60VAMB4C4LV0.1
LED driver (backlight): integrated into PSU
PWM LED driver: PF7900S (PWM), PF7700A (Current Balance)
MOSFET LED driver: AOD4126
Power Supply (PSU): 715G5792-P03-000-002M 996590004073
PWM Power: LD7591T (PFC), SSC1S311, PF8200S
MainBoard: 715G5713-M0F-000-005K 996590004417
IC MainBoard: CPU: MT5580MPOI; DRAM: H5TQ2G83DFR; NAND Flash: TC58NVG2S3ETAI0; SOUND: STA3818
Tuner: TDSY-G230D
Specifications 40PFL4508T
PHILIPS 40PFL4508T
General repair guidelines for TV LCD LED
Repair of all electronic devices, including the PHILIPS 40PFL4508T / 60 TV, it is advisable to start with an external examination of its external and internal elements. Many visible changes in the state of the elements make it possible to determine the further direction of troubleshooting and localization of the defect. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
Sometimes the PHILIPS 40PFL4508T does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most probable cause of the malfunction is the failure of the general power supply module 715G5792-P03-000-002M 996590004073. If it is working properly, you need to check the processor batteries on the SSB (Main Board). 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.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If the PHILIPS 40PFL4508T does not have an image but there is sound, the backlight LEDs of the LTA400HF30 001 SAMSUNG code 186 9965659004071 or their power converter may be malfunctioning. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
Diagnostics and repair of the motherboard 715G5713-M0F-000-005K 996590004417 is carried out by checking the operability of the stabilizers or power converters of the module chips. In some cases, a software update is required.
We recommend the owners of the 40PFL4508T TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual and schematic diagram 40PFL4508T/60 Chassis TPM10.1E LA part1, part2, part3
The appearance of MainBoard 715G5713-M0F-000-005K is shown in the figure below:715G5713-M0F-000-005K
715G5713-M0F-000-005K can be used in TVs:
PHILIPS 39PFL3208T/60 (Panel TPT390J1-HJ1L02), PHILIPS 40PFL4418T/60 (Panel LTA400HF30), PHILIPS 40PFL4508T/60 (Panel LTA400HF30 001 SAMSUNG code 186 p/n: 99659004071), PHILIPS 40PFL4528T/60 (Panel LTA400HF30), PHILIPS 32PFL4258T/60 (Panel TPT315B5-HVN01 REV.S210E), PHILIPS 32PFL3258T/60 (Panel TPT315B5-EUJFFA REV:S1A).
PSU Advanced
The 715G5792-P03-000-002M power supply module is made using the Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced by the device into the mains. The PFC node is a Step-Up Converter based on the LD7591T PWM controller, which evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of an increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 40PFL4508T device:
Installed matrix (LED-panel) LTA400HF30 001 SAMSUNG code 186 p / n: 99659004071.
The matrix control uses the Timing Controller (T-CON) 13NNB_SQ60VAMB4C4LV0.1.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the PF7900S (PWM), PF7700A (Current Balance) PWM controller. As power elements of the LED driver, keys of the AOD4126 type are used.
The necessary supply voltages for all nodes of the PHILIPS 40PFL4508T TV are generated by the 715G5792-P03-000-002M power supply module, or its analogs using LD7591T (PFC), SSC1S311, PF8200S microcircuits.
MainBoard - the main board (motherboard) is a 715G5713-M0F-000-005K module, using CPU chips: MT5580MPOI; DRAM: H5TQ2G83DFR; NAND Flash: TC58NVG2S3ETAI0; SOUND: STA3818 and others.
The TDSY-G230D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA400HF30-W
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%), Hard coating (2H)
Brightness: 350 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (8-bit + Hi-FRC), CIE1931 70%
Response Time: 8 (G to G)
Frequency: 120Hz (60Hz Input)
Lamp Type: WLED Without Driver
Signal Interface: LVDS (2 ch, 10-bit), 61 pins
Voltage: 12.0V