Monday 27 January 2020

REPAIR / SERVICING TV PHILIPS 32PFL9604H

Technical description and composition of the PHILIPS 32PFL9604H TV, type of panel and applicable modules. The composition of the modules.
PHILIPS
Model: 32PFL9604H / 60
Chassis / Version: Q549.2E LA
Panel: LC320WUF (SB) (N1) code 181 p / n: 932226687682
T-CON: 6870C-4000H
Inverter (backlight): PLHL-T826C (A) (B)
PWM Inverter: OZ9966GN
MOSFET Inverter: 5N50
Trans Inverter: 2130KP0290C-F 32 FHD HB HY0902248
Power Supply (PSU): PLHL-T826 C
PWM Power: FSQ510 (7), L6599D (PWM Resonant)
MOSFET Power: 5D0N50F
MainBoard: 310431363432 314302713503 3104.303.52272, 3104.313.63432
IC MainBoard: PNX85439EH24182, TDA9996, HYB18TC512160CF-2.5, M24C16, NAND01GW3B2BN6F
Tuner: 3139 147 27671 HD1816AF / BHXP
Control: RC4495 / 01 3188 147 21441
Specifications 32PFL9604H
PHILIPS 32PFL9604H
General recommendations for repairing TV LCD
Repair PHILIPS 32PFL9604H / 60 is recommended to start with the diagnosis of the malfunction, which includes a careful inspection of the external and internal elements of the TV. Visible damage to elements can sometimes suggest directions for troubleshooting even before the necessary measurements are taken. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
Power Module Repair
If the PHILIPS 32PFL9604H / 60 does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a malfunction of the PLHL-T826C power module. 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 cause should be sought in the power semiconductor elements of the pulsed flyback converter of the main power supply unit. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch of the 5D0N50F converter, which can be installed separately on the radiator or integrated with a PWM controller.
It should be remembered that the N-FET keys used in flyback converters rarely fail without their own sake without any reasons that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in resistors in the stabilization circuits. The PWM controller chip FSQ510 (7), L6599D (16) can also cause a breakdown of the power switch of the converter.
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
Inverter Repair
If the PHILIPS 32PFL9604H / 60 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU.
Repair of the inverter PLHL-T826C (A) (B) can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety when the lamps are depressurized, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
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
Repair or diagnostics of the motherboard EH920.2 PL5.A 314302713503 should begin by checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips with new ones or obviously working ones.
Once again, remind users! Attempts at self-repair of the PHILIPS 32PFL9604H / 60 TV without the appropriate qualifications and experience can lead to its complete non-repairability!


Service manual and schematic diagram 32PFL9604H/60 Chassis Q549.2E LA


 The appearance of MainBoard 310431363432 is shown in the figure below:
310431363432
310431363432 can be used in TVs:
PHILIPS 32PFL9604H/60 (Panel LC320WUF (SB)(N1) code 181 p/n: 932226687682), PHILIPS 42PFL9664H/60 (Panel LC420WUF (SB)(M2) code 196).
The appearance of the power supply
Main features of the PHILIPS 32PFL9604H device:
Installed matrix (LCD panel) LC320WUF (SB) (N1) code 181 p / n: 932226687682.
The matrix control uses the Timing Controller (T-CON) 6870C-4000H.
The PLHL-T826C inverter is used to power the backlight, controlled by the OZ9966GN PWM controller. A transformer 2130KP0290C-F 32 FHD HB HY0902248 is installed in the inverter converter. As power elements of the inverter, keys of the 5N50 type are used.
The required supply voltages for all nodes of the PHILIPS 32PFL9604H TV are generated by the PLHL-T826 power supply module or its analogs using FSQ510 (7), L6599D (PWM Resonant) microcircuits and 5D0N50F power switches.
MainBoard - the main board (motherboard) is a module 310431363432, using chips PNX85439EH24182, TDA9996, HYB18TC512160CF-2.5, M24C16, NAND01GW3B2BN6F and others.
Tuner 3139 147 27671 HD1816AF / BHXP provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC320WUF-SBN1
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 10%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1300: 1
Display Colors: 1.06B (8-bit + FRC)
Response Time: 6 (G to G)); 8 (MPRT)
Frequency: 120Hz
Lamp Type: 16 pcs EEFL Without Driver
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V