Technical description and composition of the PHILIPS 26PF3320 TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 26PF3320 / 10
Chassis / Version: LC4.3E AA
Panel: QD26HL02-REF01
Inverter (backlight): CIU11-T0040 8 lamps 250000004200
Power Supply (PSU): PLCD170P2 32191
PWM Power: DLA001D (PWM = L6598), NCP1207A (PWM), L6562D (PFC)
MainBoard: 3139-123-6093.1 WK509.2
IC MainBoard: CPU: TDA15021H / N1A1; Scaler: GM1501-LF-BD; DRAM: K4D263238F;
Tuner: UV1318S / D
Specifications 26PF3320
PHILIPS 26PF3320
General recommendations for repairing TV LCD
Repair PHILIPS 26PF3320 / 10 is recommended to start with the diagnosis of the malfunction, which includes a careful examination of the external and internal elements of the TV. It often happens that some damage to elements or connections helps determine the direction of the troubleshooting. If ring cracks are detected in the soldering of the terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of an already known typical malfunction.
Power Module Repair
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain chance that the V26C PLCD170P2 32191 power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, which is typical for certain PHILIPS models and happens much less often. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse is broken, it is advisable to check for a breakdown, first of all, all power semiconductor elements of the converter and the rectifier diode bridge of the network, as well as the large electrolytic capacitor of the filter of the network rectifier and the key transistor.
Power switches in flyback converters fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
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.
Inverter Repair
If the PHILIPS 26PF3320 / 10 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.
Repairing the CIU11-T0040 inverter 8 lamps 250000004200 is complicated by the fact that 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.
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.
Attention to users! Self-repair of a PHILIPS 26PF3320 / 10 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual and schematic diagram 26PF3320/10 Chassis LC4.3E AA
MODELS: 26PF4310/10, 26PF5320/10, 32PF5320/1, 32PF7320/10, 26PF4310/10, 26PF5320/1, 32PF5320/1, 32PF7320/10, 26PF5320/1, 32PF5320/10, 32PF7320/10, 26PF4310/10, 26PF5320/1, 32PF5320/1, 32PF7320/1, 26PF4310/10, 26PF5320/10, 32PF5320/1, 32PF7320/10, 26PF4310/1, 26PF5320/10, 32PF5320/10, 32PF7320/10
The appearance of MainBoard 3139-123-6093.1 is shown in the figure below:3139-123-6093.1
3139-123-6093.1 can be used in televisions:
PHILIPS 26PF3320/10 (Panel QD26HL02-REF01), PHILIPS 26PF4310/10 (Panel QD26WL01 REV:01), PHILIPS 32PF5320/10 (Panel L0315T3LZ33), PHILIPS 32PF7320/10 (Panel LC320W01(SL)(06)).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the PLCD170P2 module provides for the use of a power factor correction unit (Power Factor Correction). 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 26PF3320 device:
Installed matrix (LCD panel) QD26HL02-REF01.
To power the backlight used inverter CIU11-T0040.
The necessary supply voltages for all nodes of the PHILIPS 26PF3320 TV are generated by the PLCD170P2 power module or its analogs using the DLA001D (PWM = L6598), NCP1207A (PWM), L6562D (PFC) microcircuits.
MainBoard - the main board (motherboard) is a module 3139-123-6093.1, using CPU chips: TDA15021H / N1A1; Scaler: GM1501-LF-BD; DRAM: K4D263238F; and others.
The UV1318S / D tuner provides TV reception and channel tuning.
