Technical description and composition of the PHILIPS 19PFL3403S TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 19PFL3403S / 60
Chassis / Version: TCM1.0E LA
Panel: M190Z1-L01 Rev. C1 (CHI MEI)
Lamp backlight: 4 Lamp CCFL
Inverter (backlight): JSY-190406-B
PWM Inverter: TL494C
MOSFET Inverter: ME4542
Power Supply (PSU): 40-PWL20C-PWI1XG // 40-PWL20C-PWH1XG
PWM Power: NCP1377B (PWM flyback 8pin)
MOSFET Power: 2SK2996 (600V 10A)
Mainboard: MA1
IC MainBoard: MT8200ALE S29AL016M K4S641632K KA-9222 MT8293
Tuner: TEDE9-2C2B
Specifications 19PFL3403
PHILIPS 19PFL3403S
General recommendations for repairing TV LCD
Possible manifestations of defects
- The PHILIPS 19PFL3403S TV does not turn on and does not show any signs of turning on, it does not respond to the control buttons or the remote control.
With such manifestations, a malfunction is most likely to be detected in the 40-PWL20C-PWI1XG power supply module. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of power switches (2SK2996 (600V 10A)) of converters and rectifier diodes for possible short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM circuits NCP1377B (PWM flyback 8pin) are usually checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply to the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the MA1 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard board - MT8200ALE S29AL016M K4S641632K KA-9222 MT8293. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the TEDE9-2C2B tuner and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
Service manual and schematic diagram 19PFL3403S/60 Chassis TCM1.0E LA
FOR MODS: 19PFL3403, 19PFL3403S, 20PFL3403, 22PFL3403, 26PFL3403.
PSU SCHEMATIC -------------------> 40-PWL20C-PWH1XG.
The appearance of MainBoard MA1 is shown in the figure below:MA1
MA1 can be used in TVs:
ERISSON 19LET11 (Panel M185XW0.1 V.6 720p HD 1366x768), PHILIPS 19PFL3403/60 (Panel M190Z1-L01 Rev.C1), PHILIPS 19PFL3403S/60 (Panel M190Z1-L01 Rev.C1 (CHI MEI)), PHILIPS 20PFL3403S/60 (Panel LC201V02 SD D1), PHILIPS 22PFL5403H/60 (Panel M220Z1-L03), PHILIPS 26PFL3403/60 (Panel T260XW03 V.3), THOMSON 26E90NH10 (Panel V260B1-L02).
The appearance of the power supply
Key Features of PHILIPS 19PFL3403S:
Installed matrix (LCD panel) M190Z1-L01 Rev. C1 (CHI MEI).
The JSY-190406-B inverter is used to power the backlight, controlled by the TL494C PWM controller. Keys of type ME4542 are used as power elements of the inverter.
The necessary supply voltages for all nodes of the PHILIPS 19PFL3403S TV are generated by the 40-PWL20C-PWI1XG power supply module or its analogs using NCP1377B microcircuits (PWM flyback 8pin) and power switches of the 2SK2996 type (600V 10A).
MainBoard - the main board (motherboard) is a MA1 module using MT8200ALE S29AL016M K4S641632K KA-9222 MT8293 and others.
The TEDE9-2C2B tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: M190Z1-L01
Type: a-Si TFT-LCD, Panel
Diagonal size: 19.0 inch
Resolution: 1680x1050, WSXGA +
Display Mode: TN, Normally White, Transmissive
Active Area: 408.24x255.15 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
