Technical description and composition of the PHILIPS 37PFL5603 TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 37PFL5603 / 60
Chassis / Version: Q522.1E LA
Panel: T370HW02 V.3
T-CON: T370HW02 V402 37T04-C02
Inverter (backlight): integrated into PSU
PWM Inverter: DDA001AG (BG)
Power Supply (PSU): DPS-279BP A
PWM Power: 1606B (PFC), 3BS3LJ (PWM 8pin), DDA005 (6), DDA002B (PWM 20pin)
MainBoard: 313912364461V1 - 313912364471V1 - 313926861565
Tuner: TD1716F / BHXP-3 3139 147 26571J
Control: 2422 549 01833
Specifications 37PFL5603D
PHILIPS 37PFL5603
General recommendations for repairing TV LCD
Repair of the PHILIPS 37PFL5603 / 60 TV is advisable to start with a careful external examination. In this case, both external and internal components of the device should be inspected. Often, by visible changes, it is possible to determine the further direction of troubleshooting and localization of the defect before the start of the acquisition of oscillograms and the necessary measurements. 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 absence of any signs of operability, when the PHILIPS 37PFL5603 / 60 does not turn on and does not signal anything with the control lights on the panel, the power supply module DPS-279BP A is most likely to be faulty. In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse for network input. 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.
The reasons for the breakdown of the power switch of the flyback converter of the power module can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or breakage of the resistors in its bundle.
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
Inverter Repair
If the PHILIPS 37PFL5603 / 60 TV does not have an image, but there is sound, the malfunction should be sought in the power converter of the backlight (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for excessive ESR.
Diagnostics and repair of the inverter are often complicated by the organization of special protection circuits, which is necessary for fire safety and turns off the inverter in any emergency situation, for example, when the lamps are worn or depressurized. Often, to localize a defect, its blocking is required.
It should be remembered that in such cases there is a risk of failure of the power elements of the inverter and to take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Repair Main Board
The motherboard must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up constantly. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary.
We recommend the owners of the 37PFL5603 / 60 TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual and schematic diagram 37PFL5603/60 Chassis Q522.1E LA
The appearance of MainBoard 313912364461V1 is shown in the figure below:313912364461V1
PSU Advanced
The 37PFL5603 / 60 model uses a DPS-279BP 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 step-up converter based on the 1606B 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 37PFL5603 device:
Installed matrix (LCD panel) T370HW02 V.3.
The matrix control uses the Timing Controller (T-CON) T370HW02.
To power the backlight lamps, a converter is used, combined with a power supply unit, controlled by the PWM controller DDA001AG (BG).
The necessary supply voltages for all nodes of the PHILIPS 37PFL5603 TV are generated by the DPS-279BP power module or its analogs using microcircuits 1606B (PFC), 3BS3LJ (PWM 8pin), DDA005 (6), DDA002B (PWM 20pin).
MainBoard - the main board (motherboard) is a module 313912364461V1.
The tuner TD1716F / BHXP-3 3139 147 26571J provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T370HW02 V3
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 819.36x460.89 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 2000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V