Technical description and composition of the PHILIPS 32PFL7423D TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL7423D / 12
Chassis / Version: Q528.2E LB
Panel: LC320WXD (SA) (B1) code 154 p / n: 932226033682
T-CON: LC320WXD 6870C-0197B
Inverter (backlight): 6632L-0494A 2300KTG006A PNEL-T712A
Power Supply (PSU): PLCD170PS09 24851
MainBoard: 313912363411 3139 123 63411 3139 123 63401 V3
IC MainBoard: PNX8541E / 2414, TDA8932BTW, ISP1564HL
Tuner: TD1716F / BHXP-3
Control: RC4452 / 01 3128 147 19752LF
Specifications 32PFL7423D
PHILIPS 32PFL7423D
General recommendations for repairing TV LCD
Possible malfunctions
- PHILIPS 32PFL7423D does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
Often in such cases, the PLCD170PS09 power module is faulty. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of the power switches of the converters and rectifier diodes for the presence of a possible short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits are usually checked by replacement with new ones, or obviously working.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or inverter. If all the electrolytic capacitors of the filter according to the power supply of the inverter are working, make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuit should be restored immediately after the repair is completed.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the 313912363411 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). When repairing an MB board, you need to check its components PNX8541E / 2414, TDA8932BTW, ISP1564HL. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
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 independently repair the PHILIPS 32PFL7423D 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 32PFL7423D/12 Chassis Q528.2E LB
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).
The appearance of the power supply
Main features of the PHILIPS 32PFL7423D device:
Installed matrix (LCD panel) LC320WXD (SA) (B1) code 154 p / n: 932226033682.
The matrix control uses the Timing Controller (T-CON) LC320WXD.
An inverter 6632L-0494A is used to power the backlight.
The necessary supply voltages for all nodes of the PHILIPS 32PFL7423D TV are generated by the PLCD170PS09 power supply module, or its analogs.
MainBoard - the main board (motherboard) is a module 313912363411, using chips PNX8541E / 2414, TDA8932BTW, ISP1564HL 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