Technical description and composition of the PHILIPS 32PFL3403 TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL3403 / 12
Chassis / Version: LC8.1E LB
Panel: LC320WXN (SA) (B1) code 136
Inverter (backlight): LC320 6632L-0494A T712A REV-1.3 2300KTG006A
PWM Inverter: BD9897FS (30)
MOSFET Inverter: FDD8447L
Power Supply (PSU): PLCD170PS09 312242724851
PWM Power: TEA1601T (16)
MOSFET Power: D1NK8 F12NM60N
MainBoard: 3139_123_64241 3139 123 64241 V3 Wk19.3
IC MainBoard: TDA15471HV / N1C00, HY5DU281622FTP, TDA8932T, TDA8890H1N18, WT61P8S, NCP5422AG
Tuner: UV1316E / ABH-5
Specifications 32PFL3403
PHILIPS 32PFL3403
General recommendations for repairing TV LCD
Repair of all electronic devices, including the PHILIPS 32PFL3403 / 12 TV, it is advisable to start with an external examination of its external and internal elements. You should also pay attention to the condition of the case elements, connectors, cords, loops and buttons. It often happens that some damage to elements or connections helps determine the direction of the troubleshooting. 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
Sometimes the PHILIPS 32PFL3403 / 12 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 common power module PLCD170S09 312242724851. It is advisable to start the diagnosis of the malfunction of the power module by checking the condition of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. In case the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and the power switch of the D1NK8 F12NM60N converter, which are often found in a breakdown state in such situations.
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 TEA1601T PWM controller chip itself may be faulty (16). It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuit.
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 32PFL3403 / 12 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.
The operation of the power circuits of the inverter and the backlight in the normal mode are controlled by special protection, which is organized for fire safety, for example, to disconnect during short circuits or breaks in high-voltage connections or when the lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
Repair Main Board
The motherboard HJB47.2 8B.C 3139 123 64241V3 Wk19.3 is subject to verification if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up constantly. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary. When repairing an MB board, you need to check its components TDA15471HV / N1C00, HY5DU281622FTP, TDA8932T, TDA8890H1N18, WT61P8S, NCP5422AG, tuner UV1316E / ABH-5. Defective items should be replaced.
Attention to users! Do-it-yourself repair of the PHILIPS 32PFL3403 / 12 TV without the appropriate qualifications and experience can lead to its complete non-repairability !!!!!!!!!!!
Service manual and schematic diagram 32PFL3403/12 Chassis LC8.1E LB
32PFL3403/12, 42PFL3403/12
Firmware FOR Weltrend WT61P8S --------------------> PHILIPS Shassis LC8.1E LB
The appearance of MainBoard 3139_123_64241 is shown in the figure below:3139_123_64241
3139_123_64241 can be used on TVs:
PHILIPS 32PFL3403/12 (Panel LC320WXN (SA)(B1) code 136), PHILIPS 42PFL3403/12 (Panel LC420WXE (SA)(A1)).
The appearance of the power supply
Main features of the PHILIPS 32PFL3403 device:
Installed matrix (LCD panel) LC320WXN (SA) (B1) code 136.
An LC320 inverter is used to power the backlight lamps; it is controlled by the BD9897FS PWM controller (30). As power elements of the inverter, keys of the FDD8447L type are used.
The necessary supply voltages for all nodes of the PHILIPS 32PFL3403 television are generated by the PLCD170PS09 power supply module or its analogs using TEA1601T microcircuits (16) and power switches of the D1NK8 F12NM60N type.
MainBoard - the main board (motherboard) is a module 3139_123_64241, using chips TDA15471HV / N1C00, HY5DU281622FTP, TDA8932T, TDA8890H1N18, WT61P8S, NCP5422AG and others.
The UV1316E / ABH-5 tuner allows you to receive television programs and tune to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320WXN-SAB1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1100: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 12 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V