Technical description and composition of the PHILIPS 37PFL9732D TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 37PFL9732D / 10
Chassis / Version: Q528.1E LA
Panel: LC370WU3 (SL) (E1)
Inverter (backlight): PNEL-T706A REV-0.0 6632L-0464A
PWM Inverter: OZ9966SN
MOSFET Inverter: K4075
Power Supply (PSU): 310432848892 3104 328 48892 // 3104 303 5094
PWM Power: MC34067P
MainBoard: 3104.313.61943 - 3104.303.50823
IC MainBoard: PNX8541E / 0434, PNX5050EH / M1, ISP1564HL
Tuner: TD1716F / 1HXP-3
Control: IR: 3104 313 61692
Specifications 37PFL9732D
PHILIPS 37PFL9732D
General recommendations for repairing TV LCD
PHILIPS 37PFL9732D / 10 TV, as well as other electronic devices, it is advisable to start repairing from inspection of external and internal elements. Visible damage to elements can sometimes suggest directions for troubleshooting even 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.
Power Module Repair
If the 37PFL9732D / 10 does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, most likely the power supply module is faulty in this case. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power switch is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
It should be remembered that in the practice of repair, usually the power keys of N-Fet converters do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
When using a power factor correction unit (PFC) in the power modules, troubleshooting becomes somewhat more complicated and requires additional experience and knowledge of the device for their operation.
Inverter Repair
If there is no image when you turn on the PHILIPS 37PFL9732D / 10, or it appears for a second and disappears completely, but there is sound, most likely either the backlight lamps or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
When repairing the inverter, it is often necessary for diagnostics to turn off the protection, which, for the purpose of fire safety, turns it off in any emergency situation, for example, during a malfunction or uneven wear of the lamps, which makes it difficult to find a defect.
It should be remembered that in such cases there is a risk of failure of the power elements of the inverter and to take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
It should be remembered! Attempts to repair the PHILIPS 37PFL9732D / 10 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 37PFL9732D/10 Chassis Q528.1E LA
The appearance of MainBoard 3104.313.61943 is shown in the figure below:3104.313.61943 - 3104.303.50823
3104.313.61943
3104.313.61943 can be used on TVs:
PHILIPS 32PFL7862D/10 (Panel T315XW02 V.F), PHILIPS 32PFL9632D/10 (Panel LC320WX5-SLB1), PHILIPS 37PFL9732D/10 (Panel LC370WU3 (SL)(E1)), PHILIPS 42PFL7862D/10 (Panel LC420WU5(SL)(B1) code 097), PHILIPS 42PFL9632D/10 (Panel LC420WU5(SL)(B1)), PHILIPS 42PFL9732D/10 (Panel LC420WU5 (SL)(B1)), PHILIPS 47PFL9732D/10 (Panel LC470WU2 (SL)(B1) code 101).
The appearance of the power supply
Main features of the PHILIPS 37PFL9732D device:
Installed matrix (LCD panel) LC370WU3 (SL) (E1).
The PNEL-T706A inverter is used to power the backlight, controlled by the OZ9966SN PWM controller. As power elements of the inverter, keys of the K4075 type are used.
The necessary supply voltages for all nodes of the PHILIPS 37PFL9732D TV are generated by the power supply module 310432848892, or its analogs using MC34067P microcircuits.
MainBoard - the main board (motherboard) is a module 3104.313.61943, using chips PNX8541E / 0434, PNX5050EH / M1, ISP1564HL and others.
The tuner TD1716F / 1HXP-3 provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC370WU3-SLE1
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 819.36x460.89 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 1.07B (8-bit + Hi-FRC), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 120Hz + 120Hz
Lamp Type: EEFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V