Friday 24 January 2020

REPAIR / SERVICING TV PHILIPS 32PFL5406H

Technical description and composition of the PHILIPS 32PFL5406H TV, type of panel and applicable modules. The composition of the modules.
PHILIPS LED
Model: 32PFL5406H / 60
Chassis / Version: TPM6.1E LA
Panel: LC320EXE (SD) (N6) code 128 // LC320EXE (SD) (N7)
LED backlight: LG lnnotek V6 32INCH HD R-Type / L-Type Rev 0.0 20101104
T-CON: LC320EXN 6870C-0370A
LED driver (backlight): 715G4738-P1B-H20-002U
PWM LED driver: OZ9908AGN (28)
MOSFET LED driver: K7A50D, 2907A (3)
Trans LED driver: 80GL32P-73-H HI-POT
Power Supply (PSU): 715G4738-P1B-H20-002U
PWM Power: TNY274PN (7), K4003, CAP004DG (8), SSC9512S (18), (TOP240YN)
MainBoard: 715G4722-M1C-000-005B
IC MainBoard: STA339BW, N083 G5795 (8), 24C128W1
Tuner: ENV57U03D5F
Control: 2422 549-90301, IR: PTPFBPA4 31W6AHT2
Specifications 32PFL5406H
PHILIPS 32PFL5406H
General repair guidelines for TV LCD LED
TV PHILIPS 32PFL5406H / 60, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Using visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before the necessary measurements are taken. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, it does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the 715G4738-P1B-H20-002U power module is faulty and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, which is typical for certain PHILIPS models. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller TNY274PN (7), K4003, 1032 CAP004D6 (8), SSC9512S (18) (TOP240YN), which can only be checked by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the PHILIPS 32PFL5406H does not have an image but there is sound, the backlight LEDs of the LC320EXE SD N6 code 128 N7 or their power converter may malfunction. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the lines and connectors.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
Repair or diagnostics of the 715G4722-M1C-000-005B motherboard should begin by checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software).
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - STA339BW, N083 G5795 (8), 24C128W1 and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
In cases where there is no tuning to the local television channels, you should make sure that there is a varicap supply voltage (30-33V) and other supply voltages at the terminals of the tuner ENV57U03D5F.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.


Service manual and schematic diagram 32PFL5406H/60 Chassis TPM6.1E LA 

FOR MODELS: 22PDL4906H/12, 22PDL4906H/58, 22PDL4906H/60, 22PDL4916H/12, 22PDL4916H/58, 22PDL4916H/60, 26PDL4906H/12, 26PDL4906H/58, 26PDL4906H/60, 26PDL4916H/12, 26PDL4916H/58, 26PDL4916H/60, 32PFL3406H/12, 32PFL3406H/58, 32PFL3505H/12, 32PFL3506H/12, 32PFL3506H/58, 32PFL3506H/60, 32PFL3606H/12, 32PFL3606H/58, 32PFL3606H/60, 32PFL5306H/12, 32PFL5306H/58, 32PFL5406H/12, 32PFL5406H/58, 32PFL5406H/60, 32PFL5606H/12, 32PFL5606H/58, 32PFL5606H/60, 42PFL3505H/12.

 The appearance of the MainBoard 715G4722-M1C-000-005B is shown in the figure below:
715G4722-M1C-000-005B
715G4722-M1C-000-005B can be used in TVs:
PHILIPS 32PFL5406H/60 (Panel LC320EXE (SD)(N6) code 128), PHILIPS 40PFL5606H/60 (Panel LK400D3LB83J (SRPJ) B p/n: 932228636682), PHILIPS 32PFL5606H/60 (Panel LC320EUG (SD)(N6)).
The appearance of the power supply
Main features of the PHILIPS 32PFL5406H device:
Installed matrix (LED-panel) LC320EXE (SD) (N6) code 128 or LC320EXE (SD) (N7).
The matrix control uses the Timing Controller (T-CON) LC320EXN.
The LED driver 715G4738-P1B-H20-002U is used to power the backlight LEDs, it is controlled by the OZ9908AGN PWM controller (28). The transformer 80GL32P-73-H HI-POT is installed in the LED driver converter. As the power elements of the LED driver, keys of the type K7A50D, 2907A (3) are used.
The necessary supply voltages for all nodes of the PHILIPS 32PFL5406H TV are generated by the 715G4738-P1B-H20-002U power module, or its analogs using TNY274PN (7), K4003, CAP004DG (8), SSC9512S (18), (TOP240YN) microcircuits.
MainBoard - the main board (motherboard) is a module 715G4722-M1C-000-005B, using microchips STA339BW, N083 G5795 (8), 24C128W1 and others.
The tuner ENV57U03D5F provides the reception of television programs and tuning to channels.