Technical description and composition of the PHILIPS 20PFL4101S TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 20PFL4101S / 60
Chassis / Version: LC4.1E AB
Panel: LC201V02 SD B1
Inverter (backlight): DAC-12M019 AOF
PWM Inverter: BIT3193G (16)
MOSFET Inverter: 40P03GI, 40T03GP
Power Supply (PSU): DAC-12M019 AOF
PWM Power: EA1532 (SO8)
MOSFET Power: 11N80C3
MainBoard: 3139_123_60192 3139 123 60192 Wk534.3
IC MainBoard: CPU: TDA15021H1 / N1C91; Scaler: GM5221H-LF
Tuner: UR1316S / A
Control: IR: 3139 123 61891
Specifications 20PFL4101
PHILIPS 20PFL4101S
General recommendations for repairing TV LCD
Repair of the PHILIPS 20PFL4101S / 60 TV is advisable to start with a careful external examination of all its components and modules. Also subject to inspection are body elements, functional control buttons, screen, cords and connectors. Visible damage to elements can sometimes suggest directions for troubleshooting even before the necessary measurements are taken. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a hint in the assumptions about the causes and consequences of the malfunction.
Sometimes the PHILIPS 20PFL4101S / 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 DAC-12M019 AOF common power module. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), the mains fuse must first be checked. If it is broken, the 11N80C3 power switch and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
In most cases, a breakdown of the N-Fet converter key does not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM EA1532 (SO8) from the manufacturer.
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
If the PHILIPS 20PFL4101S / 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.
Diagnostics of the DAC-12M019 AOF inverter can be difficult due to the operation of the protection, which is organized by the designers to prevent negative consequences or fires in emergency cases, for example, during short circuits or breaks in the lamp power supply circuit, as well as their possible depressurization. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Remember! Attempts to self-repair by users of the PHILIPS 20PFL4101S / 60 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual and schematic diagram 20PFL4101S/60 Chassis LC4.1E AB
MODELS: 15PF4110, 15PF5120, 17PF4310, 20PF4110, 20PF4310, 20PF5120, 20PF5320, 23PF5320
The appearance of MainBoard 3139_123_60192 is shown in the figure below:3139_123_60192
3139_123_60192 can be used in TVs:
PHILIPS 20PF4110S/58 (Panel LC201V02 (SD)(B1)), PHILIPS 15PF4121/58 (Panel LC150X02 (TL)(01)), PHILIPS 15PF5120/58 (Panel LC150X02), PHILIPS 15PF5121/58 (Panel IDM69E1S51718 Rev:01 QD15XL16 ), PHILIPS 15PF5121/58 (Panel T150XG01 V.3), PHILIPS 20HF5474/10 (Panel LC201V02 (SD)(D1)), PHILIPS 20PF4121/58 (Panel LC201V02 (SD)(B1)), PHILIPS 20PF5120/58 (Panel A201SN02 V4), PHILIPS 20PF5320/58 (Panel LC200WX1 (SL)(01)), PHILIPS 20PFL4101S/60 (Panel LC201V02 SD B1), PHILIPS 20PFL4102S/60 (Panel LC201V02 (SD)(D1)), PHILIPS 20PFL4102S/60 (Panel LC201V02 (CD)(B1)), PHILIPS 20PFL4112S/60 (Panel LC201V02 (SD)(B1)), PHILIPS 20PFL4112S/60 (Panel LC201V02 SD D1), PHILIPS 20PFL4122/58 (Panel A201SN02 V.5), PHILIPS 20PFL5122/58 (Panel A201SN02 V.5), PHILIPS 23PFL5322/58 (Panel T230XW01 V.3), PHILIPS 23PF4321/58 (Panel T230XW01 V.2).
The appearance of the power supply
Main features of the PHILIPS 20PFL4101S device:
Installed matrix (LCD panel) LC201V02 SD B1.
To power the backlight, an inverter DAC-12M019 is used, it is controlled by the BIT3193G PWM controller (16). As power elements of the inverter, keys of the type 40P03GI, 40T03GP are used.
The necessary supply voltages for all nodes of the PHILIPS 20PFL4101S TV are generated by the DAC-12M019 power module or its analogs using EA1532 (SO8) microchips and 11N80C3 type power switches.
MainBoard - the main board (motherboard) is a module 3139_123_60192, using CPU chips: TDA15021H1 / N1C91; Scaler: GM5221H-LF and others.
The tuner UR1316S / A provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC201V02-SDB1
Type: a-Si TFT-LCD, Panel
Diagonal size: 20.1 inch
Resolution: 640x480, VGA
Display Mode: IPS, Normally Black, Transmissive
Active Area: 408x306 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (8-bit)
Response Time: 12/13 (Tr / Td)
Frequency: 60Hz
Lamp Type: 6 pcs CCFL Without Driver
Signal Interface: CMOS (1 ch, 8-bit), 41 pins
Voltage: 12.0V
