Technical description and composition of the PHILIPS 42PFL5038T TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 42PFL5038T / 60
Chassis / Version: TPM10.1E LA
Panel: LC420EUE (FF) (F1)
LED backlight: 6916L-1218A 6920L-0001C
T-CON: 6870C-0451A
LED driver (backlight): integrated into PSU
PWM LED driver: PF7900S, PF7700A
Power Supply (PSU): 715G5778-P02-000-002R
PWM Power: SSC9522S (PWM), R2A20133ESP (PFC), A6069H (Stb)
MOSFET Power: 8NM50N, 24MN60N
MainBoard: 715G5713-M0E-000-005X
IC MainBoard: CPU: MT5580MPOI, DRAM: H5TQ2G83DFR, NAND Flash: TC58NVG2S3ETAI0, SOUND: STA3818
Tuner: TDSY-G230D
Control: WIFI: 8WUSN24T.2A1G, IR: 715G5766-RC1-000-004G
Specifications 42PFL5038T
PHILIPS 42PFL5038T
General repair guidelines for TV LCD LED
Possible malfunctions
- The PHILIPS 42PFL5038T TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
Typically, with such manifestations, the defect is caused by faulty elements in the main power module 715G5778-P02-000-002R. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches (8NM50N, 24MN60N) and rectifier diodes for a probable short circuit.
In the event of a breakdown in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often 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 circuits (OOS) of stabilization. PWM controllers (PWM) SSC9522S (PWM), R2A20133ESP (PFC), A6069H (Stb), 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, 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.
The most likely in these cases is a malfunction of the LED 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 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 715G5713-M0E-000-005X 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). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - CPU: MT5580MPOI, DRAM: H5TQ2G83DFR, NAND Flash: TC58NVG2S3ETAI0, SOUND: STA3818 with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all you need to check the voltage of the TDSY-G230D tuner and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Owners and users of the PHILIPS 42PFL5038T TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
Service manual and schematic diagram --------------------> PHILIPS 42PFL5038T Chassis TPM10.1E LA.
FIRMWARE EEPROM -----------------------------> PHILIPS 42PFL5038T/60, Main: 715G5713-M0E-000-005K
The appearance of the MainBoard 715G5713-M0E-000-005X is shown in the figure below:715G5713-M0E-000-005X
715G5713-M0E-000-005X can be used in TVs:
PHILIPS 32PFL3208T / 60 (Panel TPT315B5-TU4A code 196 p / n: 996590004721), PHILIPS 47PFL5028T / 60 (Panel LC470EUE (FF) (F1) code 191 p / n: 932229833682).
The appearance of the power supply
Main features of the PHILIPS 42PFL5038T device:
Installed matrix (LED-panel) LC420EUE (FF) (F1).
The matrix control uses the Timing Controller (T-CON) 6870C-0451A.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the PF7900S, PF7700A PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 42PFL5038T TV are generated by the power supply module 715G5778-P02-000-002R, or its analogs using microchips SSC9522S (PWM), R2A20133ESP (PFC), A6069H (Stb) and power switches of the type 8NM50N, 24MN60N.
MainBoard - the main board (motherboard) is a module 715G5713-M0E-000-005X, using CPU chips: MT5580MPOI, DRAM: H5TQ2G83DFR, NAND Flash: TC58NVG2S3ETAI0, SOUND: STA3818 and others.
The TDSY-G230D tuner provides TV reception and channel tuning.