Technical description and composition of the PHILIPS 26PFL7332S TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 26PFL7332S / 60
Chassis / Version: LC7.1E LA
Panel: V260B1-L03 Rev. C3
Lamp backlight: 12 Lamp CCFL
Inverter (backlight): VIT70038.50 REV: 3 I260B1-12B-L001B
PWM Inverter: OZ964SN
MOSFET Inverter: AOD413, AOD454
Power Supply (PSU): PLCD190P3 // DPC-128BP
MainBoard: 3139_123_62611
IC MainBoard: CPU: M30300SAGP; DRAM: EDS1216AGTA; NAND Flash: M29W320ET70N; EEPROM: M24C64; SOUND: TDA8932T;
Tuner: UV1318S
Control: IR: 3139 123 6210.1 V2 WK632.5
Specifications 26PFL7332
PHILIPS 26PFL7332S
General recommendations for repairing TV LCD
Like all other televisions, it is advisable to start PHILIPS 26PFL7332S / 60 repairing with a careful inspection of both external and internal elements and modules. Often, according to the external signs and the nature of some damage to the elements, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting and localizing the malfunction before carrying out the necessary measurements and taking oscillograms at control points. Experienced repairmen are often aware of the causes of the defect and the 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.
Power Module Repair
Malfunctions of the DPC-128BP power supply module can be expressed in different ways, for example, PHILIPS 26PFL7332S / 60 does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. 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.
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 chip can also cause a breakdown of the power switch of the converter.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
Inverter Repair
If the PHILIPS 26PFL7332S / 60 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors.
Repair of the VIT70038.50 inverter is complicated by the fact that in case of any malfunction or emergency, even if the lamps are unevenly worn, a protection is triggered, which turns it off for fire safety purposes. Diagnostics become impossible and protection needs to be disabled.
In such cases, the risk of failure of the power elements of the inverter is most likely, and special care is required during work, and after their completion, it is necessary to restore the protection circuit for further safe operation of the TV by the owner in normal mode.
Owners and users of the PHILIPS 26PFL7332S / 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 26PFL7332S/60 Chassis LC7.1E LA
MODELS:26PFL3312/10, 26PFL3312S/60, 26PFL5322/10, 26PFL5322/12, 26PFL5322S/60, 26PFL7332S/60, 32PFL3312/10, 32PFL3312S/60, 32PFL5322/10, 32PFL5322/12, 37PFL3312/10,37PFL3312S/60, 37PFL5322/10, 37PFL5322/12, 37PFL5322S/60, 42PFL3312/10, 42PFL3312S/60, 42PFL5322/10, 42PFL5322/12, 42PFL5322S/60
The appearance of MainBoard 3139_123_62611 is shown in the figure below:3139_123_62611
3139_123_62611 can be used in TVs:
PHILIPS 26HF5445/10 (Panel V260B1-L03 code 068 p/n: 932224937682), PHILIPS 26PFL5322S/60 (Panel V260B1-L03 Rev.C3), PHILIPS 26PFL7332S/60 (Panel V260B1-L03 Rev.C3), PHILIPS 32PFL3312S/80 (Panel V315B1-L05 REV.C1), PHILIPS 32PFL5322S/60 (Panel LK315T3LZ93Q), PHILIPS 32PFL5322S/60 (Panel T315XW02 V.D), PHILIPS 32PFL5332S/60 (Panel T315XW02), PHILIPS 37PFL3312/10 (Panel LC370WX1-SLB1), PHILIPS 37PFL3312S/60 (Panel LC370WX4-SLB1), PHILIPS 37PFL3312S/60 (Panel LC370WX5 (SL)(B1)), PHILIPS 37PFL5322S/60 (Panel LC370WX4-SLB1), PHILIPS 37PFL5322S/60 (Panel LC370WX4-SLB1 T704A REV-0.8), PHILIPS 37PFL7662D/12 (Panel T370HW02 V.1), PHILIPS 42PFL3312S/60 (Panel LC420WX8 (SL)(B1)), PHILIPS 42PFL5322S/60 (Panel LC420WX7 SLB1 T703C), 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 ).
The appearance of the power supply
Main features of the PHILIPS 26PFL7332S device:
Installed matrix (LCD panel) V260B1-L03 Rev. C3.
The VIT70038.50 inverter is used to power the backlight lamps, it is controlled by the OZ964SN PWM controller. As power elements of the inverter, keys of the type AOD413, AOD454 are used.
The necessary supply voltages for all nodes of the PHILIPS 26PFL7332S TV are generated by the PLCD190P3 power supply module, or its analogs.
MainBoard - the main board (motherboard) is a module 3139_123_62611, using CPU chips: M30300SAGP; DRAM: EDS1216AGTA; NAND Flash: M29W320ET70N; EEPROM: M24C64; SOUND: TDA8932T; and others.
The UV1318S tuner provides TV 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