Technical description and composition of the PHILIPS 26HF5445 TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 26HF5445 / 10
Chassis / Version: LC7.1E LA
Panel: V260B1-L03 code 068 p / n: 932224937682
T-CON: V260B1-C03 TPS65161, P2003 (8), 324A (14), CM1671A-KQ, ME6100D,
Inverter (backlight): VIT700038.50
PWM Inverter: OZ964SN (20) AS324M-E1 (14)
MOSFET Inverter: D413, BA751L, D454, BA753F
Power Supply (PSU): DPS-182BP
PWM Power: L6598 (PWM Resonant 16pin), L6562D (PFC), NCP1207AD (8pin)
MOSFET Power: P10NK60ZFP, P20NM60FP (PFC), F3NK80Z
MainBoard: 313912362611 3139 123 62611 WK647.3
IC MainBoard: PNX8314HS / 102; K4S281632I; M29W320ET; M30300AGP
Tuner: TD1316AF / IHP-2
Specifications 26HF5445
PHILIPS 26HF5445
General recommendations for repairing TV LCD
Possible malfunctions
- The PHILIPS 26HF5445 does not turn on and does not show any signs of turning on. The control buttons and the remote control does not respond.
Typically, with such manifestations, the defect is caused by faulty elements in the DPS-182BP main power module. It is necessary to measure its output voltages and, if they are absent, check the operability of power switches (P10NK60ZFP, P20NM60FP (PFC), F3NK80Z) and rectifier diodes in the converters for possible breakdown.
In the event of breakdowns in the secondary circuits, the converter may emergencyly operate in the short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. PWM chip L6598 (PWM Resonant 16pin), L6562D (PFC), NCP1207AD (8pin) can also cause a malfunction of the power switch of the converter and is checked by replacement.
- 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.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the 313912362611 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). Board repair and chip replacement PNX8314HS / 102; K4S281632I; M29W320ET; M30300AGP are produced with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
The TD1316AF / IHP-2 tuner malfunction is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Owners and users of the PHILIPS 26HF5445 TV should 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 26HF5445/10 Chassis LC7.1E LA
The appearance of MainBoard 313912362611 is shown in the figure below:313912362611
313912362611 can be used in TVs:
PHILIPS 26HF5445/10 (Panel V260B1-L03 code 068 p/n: 932224937682), PHILIPS 37PFL7662D/12 (Panel T370HW02 V.1), PHILIPS 42PFL7662D/12 (Panel LC420WU5 code 093), PHILIPS 42PFL7682D/12 (Panel LC420WU5), PHILIPS 47PFL5522D/12 (Panel LC470WX1-SLA2 code 109 p/n: 932225331682 (LGPH) B ), PHILIPS 32PFL5522D/12 (Panel LK315T3LZ53).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the DPS-182BP module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the L6562D 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 26HF5445 device:
Installed matrix (LCD panel) V260B1-L03 code 068 p / n: 932224937682.
The matrix control uses the Timing Controller (T-CON) V260B1-C03.
To power the backlight, an inverter VIT700038.50 is used, it is controlled by the PWM controller OZ964SN (20) AS324M-E1 (14). As power elements of the inverter, keys of the type D413, BA751L, D454, BA753F are used.
The necessary supply voltages for all nodes of the PHILIPS 26HF5445 TV are generated by the DPS-182BP power module or its analogs using L6598 (PWM Resonant 16pin), L6562D (PFC), NCP1207AD (8pin) microcircuits and power switches of the type P10NK60ZFP, P20NM60FP (PFC) F3NK80Z.
MainBoard - the main board (motherboard) is a module 313912362611, using PNX8314HS / 102 microcircuits; K4S281632I; M29W320ET; M30300AGP and others.
The TD1316AF / IHP-2 tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V260B1-L03
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: 12 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
