Technical description and composition of the PHILIPS 32PFL7862D TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL7862D / 10
Chassis / Version: Q528.1E LA
Panel: T315XW02 V.F
Power Supply (PSU): 310432847651 - 3104 328 47651 - 3104 313 61544
PWM Power: MC34067P (16 pin)
MainBoard: 3104.313.61943 - 3104.303.50823
IC MainBoard: PNX8541E / 0434, PNX5050EH / M1, ISP1564HL
Tuner: TD1716F / 1HXP-3
Specifications 32PFL7862D
PHILIPS 32PFL7862D
General recommendations for repairing TV LCD
It is advisable to start any repair and diagnostics of the PHILIPS 32PFL7862D / 10 TV, as well as other devices, with a careful external examination of the internal and external elements, including case parts, display, buttons and cables. 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. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
Power Module Repair
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain chance that the 2K7 37 power module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, which is typical for certain PHILIPS models and happens much less often. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the filter of the secondary rectifiers 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.
The reasons for the breakdown of the power switch of the flyback converter of the power supply module can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the 24V 310432847652 D732QC PWM controller or breakage of the resistors in its bundle.
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 32PFL7862D / 10 TV does not have an image, but there is sound, the malfunction should be sought in the backlight power converter (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 an overstated ESR.
Repair of the 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 when the lamps are depressurized, 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.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
Once again, remind users! Attempts to self-repair a PHILIPS 32PFL7862D / 10 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual and schematic diagram 32PFL7862D/10 Chassis Q528.1E LA
The appearance of MainBoard 3104.313.61943 is shown in the figure below:3104.313.61943 - 3104.303.50823
3104.313.61943
3104.313.61943 can be used on TVs:
PHILIPS 32PFL7862D/10 (Panel T315XW02 V.F), PHILIPS 32PFL9632D/10 (Panel LC320WX5-SLB1), PHILIPS 37PFL9732D/10 (Panel LC370WU3 (SL)(E1)), PHILIPS 42PFL7862D/10 (Panel LC420WU5(SL)(B1) code 097), PHILIPS 42PFL9632D/10 (Panel LC420WU5(SL)(B1)), PHILIPS 42PFL9732D/10 (Panel LC420WU5 (SL)(B1)), PHILIPS 47PFL9732D/10 (Panel LC470WU2 (SL)(B1) code 101).
The appearance of the power supply
Main features of the PHILIPS 32PFL7862D device:
Installed matrix (LCD panel) T315XW02 V.F.
The necessary supply voltages for all nodes of the PHILIPS 32PFL7862D TV are generated by the power supply module 310432847651, or its analogs using MC34067P microcircuits (16 pin).
MainBoard - the main board (motherboard) is a module 3104.313.61943, using chips PNX8541E / 0434, PNX5050EH / M1, ISP1564HL and others.
The tuner TD1716F / 1HXP-3 provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T315XW02 VF
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1800: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 5.5 (G to G)
Frequency: 120Hz (60Hz Input)
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V