Friday 24 January 2020

REPAIR / SERVICING TV PHILIPS 32PFL3517

Technical description and composition of the PHILIPS 32PFL3517 TV, type of panel and applicable modules. The composition of the modules.
PHILIPS LED
Model: 32PFL3517 / 60
Chassis / Version: TPM9.2E LA
Panel: LC320EUE (SE) (M1) code 156 p / n: 932228889682
LED backlight: 6922L-0011A, 6916L0801B, 6920L-0001C
T-CON: 32/37/42/47/55 FHD TM120 Ver 0.2
LED driver (backlight): 715G5194-P01-W20-002S 996510051122
Power Supply (PSU): 715G5194-P01-W20-002S 996510051122
PWM Power: LD7523GS, A6069H
MainBoard: 715G5155-M01-002-005X (verA) 996590001036
Tuner: TDTK-G731D
Control: 098GR7BDHNTPHT 1213030848
Specifications 32PFL3517T
PHILIPS 32PFL3517
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular PHILIPS 32PFL3517 / 60, it is advisable to start with a careful external examination of internal and external elements. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
If the 32PFL3517 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, first of all, replace the swollen capacitors of the filter of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip can also cause a breakdown of the power switch of the converter.
If the PHILIPS 32PFL3517 does not have an image but has sound, the backlight LEDs of the LC320EUE (SE) (M1) code 156 932228889682 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.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
Diagnostics and repair of the motherboard 715G5155-M01-002-005X (verA) 996590001036 is carried out by checking the performance of the stabilizers or power converters of the module chips. In some cases, a software update is required.
Once again, remind users! Attempts to self-repair a PHILIPS 32PFL3517 TV without the appropriate qualifications and experience can lead to its complete non-repairability!


Service manual and schematic diagram 32PFL3517T/60 Chassis TPM9.2E LA

 The appearance of the MainBoard 715G5155-M01-002-005X is shown in the figure below:
715G5155-M01-002-005X
715G5155-M01-002-005X can be used in TVs:
PHILIPS 22PFL3507T/60 (Panel M215HW03 V.1 code 174 p/n: 996590001935 code 160 932228935682), PHILIPS 24PFL3507T/60 (Panel M236HGE-L20 code 161 p/n: 996590000202), PHILIPS 32PFL3517/60 (Panel LC320EUE (SE)(M1) code 156 p/n: 932228889682), PHILIPS 37PFL3507T/60 (Panel LC370EUE (SE)(M1)), PHILIPS 42PFL3007H/60 (Panel LC420WUE (SC)(A1) code 152 p/n: 932228942682), PHILIPS 32PFL3517H/60 (Panel LC320EUE (SE)(M1)).
The appearance of the power supply
Main features of the PHILIPS 32PFL3517 device:
Installed matrix (LED panel) LC320EUE (SE) (M1) code 156 p / n: 932228889682.
The matrix control uses the Timing Controller (T-CON) 32.
The LED driver 715G5194-P01-W20-002S is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the PHILIPS 32PFL3517 TV are generated by the power module 715G5194-P01-W20-002S, or its analogs using microcircuits LD7523GS, A6069H.
MainBoard - the main board (motherboard) is a 715G5155-M01-002-005X module.
The TDTK-G731D tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC320EUE-SEM1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 1%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 1400: 1
Display Colors: 16.7M (8-bit), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: 7S6P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V