Technical description and composition of the PHILIPS 37PF5604H TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 37PF5604H / 60
Chassis / Version: Q543.1E LA
Panel: LC370WUE (SB) (A1) code 201
Inverter (backlight): PLHL-T845A
PWM Inverter: OZ9966GN (24)
MOSFET Inverter: FDD5N50
Power Supply (PSU): PLHL-T845A
PWM Power: FSQ510 (7), 1207A, FAN7530 (PFC)
MOSFET Power: FQPF3N80. K3561
MainBoard: 313912364421 313912364431 3139 123 64421 313912364421 3139 123 64431
IC MainBoard: PNX85439E, DRX3926K-XK-A3, HYB18TC512160B2F-3S, TPA6111A2DGN, NAND01GW3B2BN6F
Tuner: HD1816AF-BHXP
Appearance
PHILIPS 37PF5604H
General recommendations for repairing TV LCD
Any repair of electronic equipment usually begins with a careful external inspection of the device and troubleshooting. In this case, you should inspect all the elements of the PHILIPS 37PF5604H / 60 TV, both internal and external. In some cases, visible external damage to the elements can suggest directions for troubleshooting and localizing the defect before starting the necessary measurements at the control points of the nodes of electronic circuits. 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
In the absence of any signs of operability, when the PHILIPS 37PF5604H / 60 does not turn on and does not signal anything with the control lights on the panel, the PLHL-T845A power supply module is most likely faulty. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. If it is broken, check the power switch FQPF3N80. K3561 and rectifier bridge diodes for avalanche (thermal) breakdown.
It should be borne in mind that in the repair practice it is extremely rare that key transistors of the N-FET type fail for no reason that should be looked for by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, either dried electrolytic capacitors or dangling resistors of the primary circuit of the PSU, involved in the stabilization process. In this case, all the semiconductor elements of the strapping of the PWM regulator chip FSQ510 (7), dezh 1207A, prk FAN7530, which should be checked by replacement, are subject to verification.
When using the Active Power Factor Correction (CMC) circuitry in the power module, the search for faulty elements is somewhat more complicated.
Inverter Repair
If the PHILIPS 37PF5604H / 60 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU.
Repair of the PLHL-T845A inverter 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.
In such cases, the risk of failure of the power elements of the inverter is most likely, and special care is required during work, and after their completion, it is necessary to restore the protection circuit for further safe operation of the TV by the owner in normal mode.
Attention to the owners! Attempts at self-repair of the PHILIPS 37PF5604H / 60 TV are not recommended by the manufacturer and can lead to serious negative consequences!
Service manual and schematic diagram 37PF5604H/60 Chassis Q543.1E LA
The appearance of MainBoard 313912364421 is shown in the figure below:313912364421
313912364421 can be used in TVs:
PHILIPS 32PFL5404H/12 (Panel LK315 code 210), PHILIPS 37PF5604H/60 (Panel LC370WUE(SB)(A1) code 201), PHILIPS 47PFL5604H/ (Panel TFT LCD470WUE-SB1A).
PSU Advanced
The 37PF5604H / 60 model uses a PLHL-T845A power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, this is a boost converter based on the FAN7530 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 37PF5604H device:
Installed matrix (LCD panel) LC370WUE (SB) (A1) code 201.
To power the backlight, the PLHL-T845A inverter is used, controlled by the OZ9966GN PWM controller (24). As power elements of the inverter, keys of the FDD5N50 type are used.
The necessary supply voltages for all nodes of the PHILIPS 37PF5604H TV are generated by the PLHL-T845A power module or its analogs using FSQ510 (7), 1207A, FAN7530 (PFC) microchips and power switches of the FQPF3N80 type. K3561.
MainBoard - the main board (motherboard) is a module 313912364421, using chips PNX85439E, DRX3926K-XK-A3, HYB18TC512160B2F-3S, TPA6111A2DGN, NAND01GW3B2BN6F and others.
The HD1816AF-BHXP tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC370WUE-SBA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 819.36x460.89 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1400: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + Dithering)
Response Time: 5 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs EEFL Without Driver
Signal Interface: LVDS (2 ch, 8/10-bit), 51 pins
Voltage: 12.0V
