Technical description and composition of the PHILIPS 19PFL3403 TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 19PFL3403 / 60
Chassis / Version: TCM1.0E LA
Panel: M190Z1-L01 Rev. C1
Inverter (backlight): JSY190406-B
PWM Inverter: TL494C (16) LM393 (8)
MOSFET Inverter: MI4606 (8) (P + N) or ME4542
Trans Inverter: HTV-086
Power Supply (PSU): 40-PWL20C-PWI1XG // 40-PWL20C-PWH1XG
PWM Power: NCP1377B (PWM flyback 8pin)
MOSFET Power: 2SK2996
Mainboard: MA1
IC MainBoard: MT8200ALE S29AL016M K4S641632K
Tuner: TEDE9-2C2B
Control: 2422 549 01911
Specifications 19PFL3403
PHILIPS 19PFL3403
General recommendations for repairing TV LCD
Any repair of electronic equipment usually begins with a careful external inspection of the device and troubleshooting. In this case, you should inspect all the elements of the PHILIPS 19PFL3403 / 60 TV, both internal and external. Visible damage to elements can sometimes suggest directions for troubleshooting even before the necessary measurements are taken. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
In the case when the 19PFL3403 / 60 does not turn on, does not respond to the remote control and the front panel buttons, does not blink lights and does not show any signs of operability, most likely in this case the PWL20C power module is faulty. In the general case, it is first of all necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Options are MI4606 (8n) Sq.
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 the resistors in the stabilization circuits. The PWM controller microcircuit TL49494 (16n) pl LM393 (8n) pl can also cause a breakdown of the power switch of the converter.
When using a power factor correction unit (PFC) in the power modules, troubleshooting becomes somewhat more complicated and requires additional experience and knowledge of their operation.
In cases where the PHILIPS 19PFL3403 / 60 TV has lost an image, and the sound is there and all the other functions are functional, there is a possibility of a malfunction of the inverter (converter for powering the backlight). When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power.
Repairing the JSY19040.6-B inverter is difficult because in case of any malfunction or emergency, even if the lamps are unevenly worn, protection is triggered, which turns it off for fire safety. Diagnostics become impossible and protection needs to be disabled.
When diagnosing with the protection off, special precautions must be taken, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
We recommend the owners of the 19PFL3403 / 60 TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual and schematic diagram 19PFL3403S/60 Chassis TCM1.0E LA
FOR MOD: 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
Main features of the PHILIPS 19PFL3403 device:
Installed matrix (LCD panel) M190Z1-L01 Rev. C1.
The JSY190406-B inverter is used to power the backlight, controlled by the TL494C (16) LM393 (8) PWM controller. A transformer HTV-086 is installed in the inverter converter. As power elements of the inverter, keys of the type MI4606 (8) (P + N) or ME4542 are used.
The necessary supply voltages for all nodes of the PHILIPS 19PFL3403 television are generated by the 40-PWL20C-PWI1XG power supply module or its analogs using NCP1377B microcircuits (PWM flyback 8pin) and 2SK2996 power switches.
MainBoard - the main board (motherboard) is a MA1 module, using chips MT8200ALE S29AL016M K4S641632K 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
