Technical description and composition of the PHILIPS 26PF4310 TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 26PF4310 / 10
Chassis / Version: LC4.3E AA
Panel: QD26WL01 REV: 01
T-CON: ND1088-4801-001 V26ACB
Inverter (backlight): 49-3-0098-000 CIU11-T0014
Power Supply (PSU): PLCD170P2 3122 133 32834
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 / A I H-3 3139 147 19801E
Control: PIL 0297
Specifications 26PF4310
PHILIPS 26PF4310
General recommendations for repairing TV LCD
It is recommended that you start the diagnostics of a malfunction of the PHILIPS 26PF4310 / 10 TV, as well as all other electronic devices, with an external examination of both external and internal elements and modules. Often, for certain external signs, it is possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. 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
In the case when the 26PF4310 / 10 does not turn on, does not respond to the remote control and the front panel buttons, does not blink light bulbs and does not show any signs of operability, most likely in this case the power supply module 3122 133 32834 PLCD170P2 is faulty. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the cause should be sought in the power semiconductor elements of the pulsed flyback converter of the main power supply unit. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch of the converter, which can be installed separately on the radiator, or integrated with a PWM controller.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a PWM controller in a single chip, are reliable enough 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.
If an active Power Factor Corrector (PFC) is used in the power module circuitry, it is sometimes more difficult to troubleshoot. Knowledge, experience, intuition and skills in such cases have a great advantage for a successful repair.
Inverter Repair
If the PHILIPS 26PF4310 / 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 49-3-0098-000 CIU11-T0014 inverter is difficult because in case of any malfunction or emergency, even if the lamps wear unevenly, protection is triggered, which turns it off for fire safety. Diagnostics become impossible and protection needs to be disabled.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
Repair Main Board
Repair or diagnostics of the motherboard 3139 267 13992 should begin by checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its chips gm1501H-LF, K4D263238F-UC50, Tuner 3139 147 19801E, VTH8881 and other possible faulty components.
Owners of the 26PF4310 / 10 TV are advised to contact qualified personnel with experience only for repair! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual and schematic diagram 26PF4310 /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
The 26PF4310 model uses a PLCD170P2 power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, it is a boost converter based on the L6562D PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the PHILIPS 26PF4310 device:
Installed matrix (LCD panel) QD26WL01 REV: 01.
The matrix control uses the Timing Controller (T-CON) ND1088-4801-001.
An inverter 49-3-0098-000 is used to power the backlight.
The necessary supply voltages for all nodes of the PHILIPS 26PF4310 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 tuner UV1318S / A I H-3 3139 147 19801E provides the reception of television programs and tuning to channels.
