Technical description and composition of the PHILIPS 26PFL5403 TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 26PFL5403 / 60 26PFL5403S / 60
Chassis / Version: TCM2.0E LA
Panel: V260B1-L11
T-CON: V260B1-XC11
Inverter (backlight): VIT70063.50
PWM Inverter: OZ964GN (20pin)
MOSFET Inverter: P4404EDG, P2504BDG
Power Supply (PSU): PWL37C04
PWM Power: VIPER22A (Standby), L6563 (PFC 14pin), L6599D (PWM Resonant)
MOSFET Power: K3568
MainBoard: 40-LDMK35-MAE2XG
IC MainBoard: MT5335PU, 24C16, MX25L3205, WT6702F, SII9185AC-7U, MT8295AE, WM8501GED, TDA9886TS
Tuner: TDQG4-501A
Specifications 26PFL5403D
PHILIPS 26PFL5403
General recommendations for repairing TV LCD
Repair PHILIPS 26PFL5403 / 60 is recommended to start with the diagnosis of the malfunction, which includes a careful inspection of the external and internal elements of the TV. 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. 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 assumptions about the causes and consequences of the malfunction.
Power Module Repair
In the absence of any signs of operability, when the PHILIPS 26PFL5403 / 60 does not turn on and does not signal anything with the control lights on the panel, the PW37C04 power supply module is most likely faulty. 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. Possible options.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked by replacement, also other semiconductor elements (diodes, transistors, zener diodes).
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
Inverter Repair
If the PHILIPS 26PFL5403 / 60 does not have an image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Diagnosis and repair of the inverter is often complicated by the organization of special protection circuits, which is necessary for fire safety and turns off the inverter in any emergency situation, for example, when the lamps are worn or depressurized. Often, to localize a defect, its blocking is required.
All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Repair Main Board
Repair of the MA1 PLH800580A V8-P10MT35 LF1V668 motherboard should begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
Owners and users of the PHILIPS 26PFL5403 / 60 TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
Service manual and schematic diagram 26PFL5403/60 Chassis TCM2.0E LA
MODELS: 19PFL5403D, 20PFL3403D, 22PFL5403D, 26PFL3403D, 26PFL5403D
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).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the PWL37C04 module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the L6563 14pin PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 26PFL5403 device:
Installed matrix (LCD panel) V260B1-L11.
The matrix control uses the Timing Controller (T-CON) V260B1-XC11.
The VIT70063.50 inverter is used to power the backlight, controlled by the OZ964GN PWM controller (20pin). As power elements of the inverter, keys of the type P4404EDG, P2504BDG are used.
The necessary supply voltages for all nodes of the PHILIPS 26PFL5403 TV are generated by the PWL37C04 power module or its analogs using VIPER22A (Standby), L6563 (PFC 14pin), L6599D (PWM Resonant) microcircuits and K3568 type power switches.
MainBoard - the main board (motherboard) is a 40-LDMK35-MAE2XG module, using chips MT5335PU, 24C16, MX25L3205, WT6702F, SII9185AC-7U, MT8295AE, WM8501GED, TDA9886TS and others.
The TDQG4-501A tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V260B1-L11
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.2M (6-bit + FRC), CIE1931 72%
Response Time: 3/5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 5 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V