Technical description and composition of the PHILIPS 37PFL7603S TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 37PFL7603S / 60 37PFL7603D / 10
Chassis / Version: Q528.2E LA 37PFL7603D / 10
Panel: T370HW02 V.3
Lamp backlight: 16 LAMP CCFL
T-CON: T370HW02 V3 CTRL BD
Inverter (backlight): integrated into PSU
PWM Inverter: DDA001AG (BG), LM324A, LM358
MOSFET Inverter: P13NK60ZFP
Power Supply (PSU): DPS-279BP B
PWM Power: DDA001B (analog L6599 PWM resonant), 1606B (PFC), 3BS02G (8pin Standby)
MOSFET Power: 15N60C3, 2SK3569
MainBoard: 313912363411 3139 123 63411 27124525001257
IC MainBoard: PNX9541E / 4214, PNX5050EH / M1,
Tuner: 3139 147 26571 TD1716F / BHXP-3
Specifications 37PFL7603D
PHILIPS 37PFL7603S
General recommendations for repairing TV LCD
It is recommended that you start the troubleshooting of a PHILIPS 37PFL7603S / 60 TV, like all other electronic devices, with an external inspection 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. 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
Sometimes the PHILIPS 37PFL7603S / 60 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the DPS-279BP B common power module. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the secondary rectifier filter 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 key.
It should be remembered that in the practice of repair, usually the power keys of N-Fet converters do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuit.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
Inverter Repair
If the PHILIPS 37PFL7603S / 60 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.
Repair of the DPS-279BP B inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety during depressurization of lamps, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
When diagnosing with the protection off, special precautions must be taken, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
Repair Main Board
If the motherboard SSB 27124525001257 is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement. If it is not possible to replace the MB board (SSB), you need to check the health of its elements - PNX9541E / 4214, PNX5050EH / M1, tuner TD1716F / BHXP-3. Defective components should be replaced.
We recommend the owners of the 37PFL7603S / 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 37PFL7603S/60 37PFL7603D/10 Chassis Q528.2E LA
The appearance of MainBoard 313912363411 is shown in the figure below:313912363411
313912363411 can be used in TVs:
PHILIPS 32PFL7403D/12 (Panel T315XW02 V.F), PHILIPS 32PFL7423D/12 (Panel LC320WXD (SA)(B1) code 154 p/n: 932226033682), PHILIPS 32PFL7603S/60 (Panel V315B1-L05 Rev. C1), PHILIPS 32PFL7613D/12 (Panel LC320WXN (SA)(B1)), PHILIPS 37PFL7603S/60 37PFL7603D/10 (Panel T370HW02 V.3), PHILIPS 42PFL5603D/12 (Panel T420HW01 V.4 code 131 p/n: 932225801682 ), PHILIPS 47PFL5603D/10 (Panel LC470WUF SA A1), PHILIPS 47PFL7603/10 (Panel V470H1-L05 code 159).
PSU Advanced
The 37PFL7603S / 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 37PFL7603S 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 a PWM controller DDA001AG (BG), LM324A, LM358. As power elements of the inverter, keys of the type P13NK60ZFP are used.
The necessary supply voltages for all nodes of the PHILIPS 37PFL7603S TV are generated by the DPS-279BP power module or its analogs using DDA001B (analog L6599 PWM resonant), 1606B (PFC), 3BS02G (8pin Standby) microcircuits and power switches of the 15N60C3, 2SK3569 type.
MainBoard - the main board (motherboard) is a module 313912363411, using chips PNX9541E / 4214, PNX5050EH / M1, and others.
The tuner 3139 147 26571 TD1716F / BHXP-3 provides the 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
