Technical description and composition of the PHILIPS 32PFL3507H TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 32PFL3507H / 60
Chassis / Version: TPM9.2E LA
Panel: LC320EXE SDA1 code 155
LED driver (backlight): 715G5194-P01-W20-002S
Power Supply (PSU): 715G5194-P01-W20-002S
PWM Power: LD7523GS, A6069H (8)
MainBoard: 715G5155-M0B-003-005K
IC MainBoard: 54319 (16) DC-DC, STA3818W, RLT8201FL, TMDS361B
Tuner: TDTK-G731D
Specifications 32PFL3507H
PHILIPS 32PFL3507H
General repair guidelines for TV LCD LED
Repair of the PHILIPS 32PFL3507H / 60 TV should begin with a careful external examination of all its components and modules. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the 32PFL3507H 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. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the A5069H PWM controller microcircuit (8) are subject to verification, which it is desirable to verify by replacement.
If there is no image when you turn on the PHILIPS 32PFL3507H, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the LC320EXE SDA1 code 155, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
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.
Diagnostics and repair of the motherboard 715G5155-M0B-003-005K 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.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements 54319 (16) DC-DC, STA3818W, RLT8201FL, TMDS361B. BGA chip malfunctions are usually easy to detect by warming up.
The TDTK-G731D tuner malfunction is established after checking the software and all the supply voltages at its terminals, including the varicap supply voltage (30-33V).
It should be remembered! Attempts to repair the PHILIPS 32PFL3507H TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
Service manual and schematic diagram 32PFL3507H/60 Chassis TPM9.2E LA
The appearance of MainBoard 715G5155-M0B-003-005K is shown in the figure below:715G5155-M0B-003-005K
The appearance of the power supply
Main features of the PHILIPS 32PFL3507H device:
Installed matrix (LED-panel) LC320EXE SDA1 code 155.
The LED driver 715G5194-P01-W20-002S is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the PHILIPS 32PFL3507H TV are generated by the power supply module 715G5194-P01-W20-002S, or its analogs using microcircuits LD7523GS, A6069H (8).
MainBoard - the main board (motherboard) is a module 715G5155-M0B-003-005K, using chips 54319 (16) DC-DC, STA3818W, RLT8201FL, TMDS361B and others.
The TDTK-G731D tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC320EXE-SDA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Display Colors: 16.7M (6-bit + Hi-FRC)
Lamp Type: WLED