Technical description and composition of the PHILIPS 32PFL3017H TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL3017H / 60
Chassis / Version: TPM9.1E LA
Panel: LC320WUE (SC) (A1) code 150
T-CON: 6870C-0318B Ver0.7 TL2428MC, TPS65192, TPS65170, TPS62110
Inverter (backlight): integrated into PSU
PWM Inverter: OZ9976GN
MOSFET Inverter: K10A50D
Trans Inverter: 80GL32T-31-YS
Power Supply (PSU): 715G5113-P02-W21-002M
PWM Power: A6069H (Standby 7pin), LD7591GS (PFC), LD7523G (8)
MOSFET Power: P10NK70ZFP, TK6A65D
MainBoard: 715G5155-M0B-002-005K
IC MainBoard: STA381BW, TMDS361B
Tuner: ENV57U09D5F
Control: Remote: 9965 900 00449, IR: 715G5230-R02-000-004S
Specifications 32PFL3017H
PHILIPS 32PFL3017H
General recommendations for repairing TV LCD
TV PHILIPS 32PFL3017H / 60, like other electronic devices, it is advisable to start repairing from inspection of external and internal elements. Often, by visible changes, it is possible to determine the further direction of troubleshooting and localization of the defect before the start of the acquisition of oscillograms and the necessary measurements. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
Power Module Repair
Sometimes the PHILIPS 32PFL3017H / 60 TV simply 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 likely cause of the malfunction is the failure of the 715G5113-P02-W21-002M common power supply module. 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 or power switch K10A60D ..
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail by itself for no reason, which should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller A6069 (7), which it is possible only by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
Inverter Repair
If the PHILIPS 32PFL3017H / 60 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors.
Repair of the 715G5113-P02-W21-002M inverter is complicated by the fact that in case of any malfunction or emergency, even if the lamps are unevenly worn, a protection is triggered that turns it off for fire safety purposes. Diagnostics become impossible and protection needs to be disabled.
All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Repair Main Board
On the motherboard 715G5155-M0B-002-005K, in case of a malfunction, you should first check the operation of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software). When repairing an MB board, you must check its components STA381BW, TMDS361B. Defective items should be replaced.
Owners and users of the PHILIPS 32PFL3017H / 60 TV must 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 32PFL3017H/60 Chassis TPM9.1E LA
The appearance of MainBoard 715G5155-M0B-002-005K is shown in the figure below:715G5155-M0B-002-005K
PSU Advanced
The 32PFL3017H / 60 TV is equipped with a 715G5113-P02-W21-002M power module using the PFC (Power Factor Correction) circuit acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the LD7591GS PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected to the network directly through open diodes when the charge current determines its reactance (of the order of 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the PHILIPS 32PFL3017H device:
Installed matrix (LCD panel) LC320WUE (SC) (A1) code 150.
The matrix control uses the Timing Controller (T-CON) 6870C-0318B.
To power the backlight, a converter is used, combined with a power supply, controlled by the OZ9976GN PWM controller. The transformer 80GL32T-31-YS is installed in the inverter converter. As power elements of the inverter, keys of the K10A50D type are used.
The necessary supply voltages for all nodes of the PHILIPS 32PFL3017H TV are generated by the power supply module 715G5113-P02-W21-002M, or its analogs using microchips A6069H (Standby 7pin), LD7591GS (PFC), LD7523G (8) and power switches of the type P10NK70ZFP, TK6A65D.
MainBoard - the main board (motherboard) is a module 715G5155-M0B-002-005K, using microchips STA381BW, TMDS361B and others.
The ENV57U09D5F tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC320WUE-SCA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Active Area: 698.4x392.85 mm
