Technical description and composition of the PHILIPS 32PFL7433S TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL7433S / 60
Chassis / Version: Q528.2E LA
Panel: LC320WXD (SA) (B1)
T-CON: 6870C-0197B
Inverter (backlight): 2300KTG006A-F 6632L-0494A
Power Supply (PSU): DPS-182CP
PWM Power: NCP1606 (PFC), ICE3BS02 (PWM 8pin), DDA001B (analog L6599 PWM resonant)
MainBoard: 313912363402 314302712464 126445, 3139 123 63402 BD 3139 123 63412wk812.2
IC MainBoard: PNX5050EH / M1, PNX8541E / 2414, NAND512W3A2CN6, TDA9832BTW
Tuner: TD1716F / BHXP-3
Control: IR: 3139 123 63273 V2 WK748.2
Specifications 32PFL7433D
PHILIPS 32PFL7433S
General recommendations for repairing TV LCD
Possible malfunctions
- The PHILIPS 32PFL7433S TV does not turn on. There are no signs of operability. The indicators on the front panel do not light up and do not blink, and the remote control and control buttons do not respond.
Failure in such cases should be sought in the DPS-182CP power supply circuits. It is necessary to measure its output voltages and, if they are absent, to check for the absence of short-circuit in the converters the serviceability of power switches and rectifier diodes.
During thermal or avalanche breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. PWM chip NCP1606 (PFC), ICE3BS02 (PWM 8pin), DDA001B (analog L6599 PWM resonant) can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
These manifestations can be triggered by the power module, or by inverter defects, as well as by the distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are in good working condition, then you need to check the converter keys and the secondary windings of the transformers.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after their completion, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the motherboard 313912363402 should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace 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 PNX5050EH / M1, PNX8541E / 2414, NAND512W3A2CN6, TDA9832BTW and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If a TD1716F / BHXP-3 tuner is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary power supply voltage levels and data exchange pulses with the processor via the I2C bus on the corresponding tuner pins.
It should be remembered! Attempts to self-repair a PHILIPS 32PFL7433S 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-repairability of the device!
Service manual and schematic diagram 32PFL7403D/12 Chassis Q528.2E LA
The appearance of MainBoard 313912363402 is shown in the figure below:313912363402
313912363402 can be used in TVs:
PHILIPS 42PFL7603S/60 (Panel T420HW01 V.4 (AUOP) B p/n: 932225801682), PHILIPS 32PFL7433S/60 (Panel LC320WXD (SA)(B1)).
The appearance of the power supply
Main features of the PHILIPS 32PFL7433S device:
Installed matrix (LCD panel) LC320WXD (SA) (B1).
The matrix control uses the Timing Controller (T-CON) 6870C-0197B.
To power the backlight used inverter 2300KTG006A-F.
The necessary supply voltages for all nodes of the PHILIPS 32PFL7433S TV are generated by the DPS-182CP power module, or its analogs using NCP1606 (PFC), ICE3BS02 (PWM 8pin), DDA001B (analog L6599 PWM resonant) microcircuits.
MainBoard - the main board (motherboard) is a module 313912363402, using chips PNX5050EH / M1, PNX8541E / 2414, NAND512W3A2CN6, TDA9832BTW and others.
The tuner TD1716F / BHXP-3 provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320WXD-SAB1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1100: 1
Display Colors: 16.7M / 1.07B (8-bit / 8-bit + Dithering)
Response Time: 8 (G to G); 11 (MPRT)
Frequency: 120Hz
Lamp Type: 12 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8/10-bit), 51 pins
Voltage: 12.0V