Technical description and composition of the PHILIPS 32PFL5405H TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL5405H / 60
Chassis / Version: Q552.1E LA
Panel: LC320WUY (SC) (A1) code 278 p / n: 9322 257 14743
T-CON: in the panel
Inverter (backlight): PLHC-P981A 2722 171 00965
PWM Inverter: OZ9977BGN
MOSFET Inverter: KF5N50
Trans Inverter: 2NV000000H-R 1051101-BJ
Power Supply (PSU): PLHC-P981A 2722 171 00965
PWM Power: 1207A (8), HS01G (8), FSQ510 (7)
MOSFET Power: KF5N50 FQPF6N80C
MainBoard: 3104_313_63643 3104 313 63643
IC MainBoard: 17113E LT106RT, 8520 (8), TL2429MC, TPA3123D2 (24), SiI9187ACNU, ST1S10PH
Tuner: TH2624
Control: Remote: 2422 5490 2543, IR: 10493 7100964 013072
Specifications 32PFL5405H
PHILIPS 32PFL5405H
General recommendations for repairing TV LCD
Repair PHILIPS 32PFL5405H / 60 is recommended to start with the diagnosis of a malfunction, which includes a careful inspection of the external and internal elements of the TV. Visible damage to elements can sometimes suggest directions for troubleshooting even before the necessary measurements are taken. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
Power Module Repair
If the PLHC-P981A 2722 171 00965 power supply module fails, the external manifestations may be different, for example, the PHILIPS 32PFL5405H / 60 does not turn on at all and there is no indication of the indicator lights on the front panel. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the filter of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes or power switch KF5N50 FQPF6N80C.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a 1207A (8) H501G (8) VA12 FSQ510 (7) PWM controller in a single chip, are quite reliable 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 32PFL5405H / 60 does not have an image, but there is sound and the TV is controlled from 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.
The operation of the power circuits of the inverter and the backlight in the normal mode are controlled by special protection, which is organized for fire safety, for example, to disconnect during short circuits or breaks in high-voltage connections or when the lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
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
On the PL5.D motherboard, in case of a malfunction, you should first check the performance of all stabilizers or power converters of the microcircuits and, if necessary, update the software (software). When repairing an MB board, you need to check its components 17113E LT106RT, 8520 (8), TL2429MC, TPA3123D2 (24), SiI9187ACNU, ST1S10PH, tuner TH2624. Defective items should be replaced.
It should be remembered! Attempts to repair the PHILIPS 32PFL5405H / 60 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-serviceability of the device!
Service manual and schematic diagram 32PFL5405H/60 Chassis Q552.1E LA
A typical defect in the PLHC-P981A power supply module is a full or partial breakdown of a ceramic capacitor for powering the A1207 chip (pin 6).
External manifestations of the defect: The TV does not turn on, the operating mode power converter does not start - the indicator blinks 3 times (error 3).
Power supply circuit -----------------> PLHC-P981A schematic diagram.
The appearance of MainBoard 3104_313_63643 is shown in the figure below:3104_313_63643
3104_313_63643 can be used in TVs:
PHILIPS 32PFL5405H/60 (Panel LC320WUY (SC)(A1) code 278 p/n: 9322 257 14743), PHILIPS 32PFL6605H/60 (Panel LC320EUH(SC)(A6) code 298 (286 )), PHILIPS 32PFL7605H/60 (Panel LC320EUH (SC)(A6) code 265 ), PHILIPS 32PFL7605H/60 (Panel LC320EUH(SC)(A2) p/n: 932227890682), PHILIPS 32PFL7605H/60 (Panel LC320EUH-SHA2 code 265 p/n: 932227890682), PHILIPS 37PFL5405H/60 (Panel LC370WUY(SC)(A1) code 277), PHILIPS 37PFL7605H/60 (Panel LC370EUH(SC)(A1) p/n: 932227578682), PHILIPS 37PFL7605H/60 (Panel LC370EUH(SC)(A2)), PHILIPS 40PFL7605H/12 (Panel LK400D3LA93 (SRPJ) B p/n: 932227619682), PHILIPS 42PFL5405H/12 (Panel LC420WUY), PHILIPS 42PFL5405H/60 (Panel LC420WUY (SC)(A1) code 276 p/n: 932227573682), PHILIPS 46PFL7605H/60 (Panel 9322 276 21682 code 271), PHILIPS 52PFL8605D/77 (Panel 52 ).
The appearance of the power supply
Main features of the PHILIPS 32PFL5405H device:
Installed matrix (LCD panel) LC320WUY (SC) (A1) code 278 p / n: 9322 257 14743.
The matrix control uses the Timing Controller (T-CON) c.
To power the backlight, an inverter PLHC-P981A is used, controlled by the PWM controller OZ9977BGN. A transformer 2NV000000H-R 1051101-BJ is installed in the inverter converter. As power elements of the inverter, keys of the KF5N50 type are used.
The necessary supply voltages for all nodes of the PHILIPS 32PFL5405H TV are generated by the PLHC-P981A power module or its analogs using 1207A (8), HS01G (8), FSQ510 (7) microcircuits and KF5N50 FQPF6N80C type power switches.
MainBoard - the main board (motherboard) is a module 3104_313_63643, using microcircuits 17113E LT106RT, 8520 (8), TL2429MC, TPA3123D2 (24), SiI9187ACNU, ST1S10PH and others.
The TH2624 tuner provides TV reception and channel tuning.