Technical description and composition of the PHILIPS 19PFL5403 TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 19PFL5403 / 60
Chassis / Version: TCM2.0E LA
Panel: M190Z1-L01 Rev. C1
Inverter (backlight): JSI-190407 (I)
Trans Inverter: HVT-086
Power Supply (PSU): 40-PWL20C-PWI1XG // 40-PWL20C-PWH1XG // JSI-190407 (P)
PWM Power: NCP1377B (PWM flyback 8pin)
MOSFET Power: 2SK2996 (600V 10A)
MainBoard: 40-LDMK35-MAE2XG
IC MainBoard: SII9185AC-7U, MT8295AE, WM8501GED, TDA9886TS, TDA7266
Tuner: TDQG4-601A
Specifications 19PFL5403D
PHILIPS 19PFL5403
General recommendations for repairing TV LCD
Like all other televisions, it is advisable to start PHILIPS 19PFL5403S / 60 repairing with a careful inspection of both external and internal elements and modules. Often, by visible changes, it is possible to determine the further direction of troubleshooting and localization of the defect before the start of the acquisition of oscillograms and the necessary measurements. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
If the power supply module SH-04 // 40-PVL20C-PWI1XG 996510014436 is faulty, the external manifestations may be different, for example, PHILIPS 19PFL5403S / 60 does not turn on at all and there is no indication of the indicator lights on the front panel. In the general case, first of all, it is 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. K2996 variants are possible.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a 1377B PWM controller (8) in a single chip, are quite reliable and rarely fail for no reason. The reasons for the breakdown of the key should be sought by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
Sometimes the PHILIPS 19PFL5403S / 60 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all electrolytic capacitors of the filter according to the power supply of the inverter itself, including in the power supply unit (power supply unit).
Repair of the JSY-190406-B inverter can often be somewhat complicated by the use of special protection circuits that are designed to disconnect it in emergency cases for fire safety when the lamps are depressurized, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
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.
In the event of a malfunction, on the motherboard, first of all, check the operability of all stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
Attention! For users and owners of 19PFL5403S / 60 TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
Service manual and schematic diagram 19PFL5403S/60 Chassis TCM2.0E LA
MODELS: 19PFL5403D, 20PFL3403D, 22PFL5403D, 26PFL3403D, 26PFL5403D.
PSU SCHEMATIC -----------------> 40-PWL20C-PWH1XG
The appearance of the MainBoard 40-LDMK35-MAE2XG is shown in the figure below:40-LDMK35-MAE2XG
40-LDMK35-MAE2XG can be used in TVs:
PHILIPS 19PFL5403/60 (Panel M190Z1-L01 Rev.C1), PHILIPS 19PFL5403S/60 (Panel SM19Z11A), PHILIPS 20HFL3330D (Panel LC201V02 (SD)(D1)), PHILIPS 22PFL5403H/60 (Panel M220Z1-L03), PHILIPS 26PFL5403/60 26PFL5403S/60 (Panel V260B1-L11), PHILIPS 19PFL5403D/10 (Panel M190Z1-L01 Rev.C1).
The appearance of the power supply
Main features of the PHILIPS 19PFL5403 device:
Installed matrix (LCD panel) M190Z1-L01 Rev. C1.
To power the backlight used inverter JSI-190407. A transformer HVT-086 is installed in the inverter converter.
The necessary supply voltages for all nodes of the PHILIPS 19PFL5403 television are generated by the 40-PWL20C-PWI1XG power supply module or its analogs using NCP1377B microcircuits (PWM flyback 8pin) and 2SK2996 power switches (600V 10A).
MainBoard - the main board (motherboard) is a 40-LDMK35-MAE2XG module, using SII9185AC-7U, MT8295AE, WM8501GED, TDA9886TS, TDA7266 and others.
The TDQG4-601A 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
