Technical description and composition of the PANASONIC TX-32LX60P TV, panel type and modules used. The composition of the modules.PANASONIC
Model: TX-32LX60P TX-32LX60PK
Chassis / Version: GLP21
Panel: LTA320W2-L13
Lamp backlight: CCFL
T-CON: 320W2C4LV6.4
Inverter (backlight): KLS-S320BCI-M REV: 01
PWM Inverter: BD9886FV
MOSFET Inverter: BA662V
Power Supply (PSU): TNP8EPL50 8
PWM Power: F9222L
MOSFET Power: 2SK3767
MainBoard: TNP8EAL40 8 AC
IC MainBoard: VCT 6973G B2 000, 24C32AN, TDA8931T,
Tuner: TXN / BL50AERS
Control: IR: TNP8EVL40 8 V
TX-32LX60P Specifications
PANASONIC TX-32LX60P
General recommendations for TV LCD repair
Possible manifestations of malfunctions
- PANASONIC TX-32LX60P TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or blink, the TV does not respond to the remote control and control buttons.
In some of these cases, the fault is detected in the TNP8EPL50 power supply module. It is necessary to make sure that its output voltages are present and, if they are completely absent, check the power switches (2SK3767) and rectifier diodes for a possible short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of the PWM controller, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM chips (PWM) F9222L are usually checked by replacing them with new ones, or knowingly working.
- There is no picture, but there is sound and reaction to commands from the remote control. Or the image appears immediately after switching on and disappears.
The defect can be caused by problems in the nodes or elements of the display backlight, or in the power supply of the lamps or the inverter.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protective circuits must be restored immediately after the repair is completed.
- The TV does not turn on, the indicator signals the standby or operating mode, or blinks.
Repair or diagnostics of the TNP8EAL40 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and the matrix. If necessary, you should update or replace the software (software). Often the MB (SSB) board must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - VCT 6973G B2 000, 24C32AN, TDA8931T, and replace the failed chips with new ones. Some malfunctions may be associated with the use of BGA soldering technologies in modern Main Board. Usually such defects are detected by local heating of the chip.
If there is no reception of TV channels, but the TV is working properly from external devices, first of all, you need to check the power supply voltage of the TXN / BL50AERS tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Once again, we remind TV users: do not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repairs to professionals with sufficient experience in the field of electronic repair.
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> PANASONIC TX-32LX60P Chassis GLP21 for models TX-32LX60F, TX-32LX60P, TX-26LX60F, TX-26LX60P
MainBoard TNP8EAL40 is shown in the figure below:TNP8EAL40
External view of the power supply
Main features of the PANASONIC TX-32LX60P device:
Installed matrix (LCD panel) LTA320W2-L13.
Matrix control uses a Timing Controller (T-CON) 320W2C4LV6.4.
The KLS-S320BCI-M inverter is used to power the backlight lamps, it is controlled by the BD9886FV PWM controller. The keys of the BA662V type are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the PANASONIC TX-32LX60P TV is carried out by the TNP8EPL50 power module, or its analogs using F9222L microcircuits and 2SK3767 power switches.
MainBoard - the main board (motherboard) is a TNP8EAL40 module using VCT 6973G B2 000, 24C32AN, TDA8931T microcircuits, and others.
The TXN / BL50AERS tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320W2-L13
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Frequency: 60Hz
Lamp Type: CCFL
PANASONIC TX-32LX60P TV with LCD display LTA320W2-L13, 32 "(81 cm) 16: 9 format diagonal. Screen brightness of 500 cd / m² backlit by CCFL (EEFL) fluorescent lamps. Contrast as a ratio of maximum brightness to the minimum is 1200: 1.
The LTA320W2-L13 panel and TNP8EAL40 firmware can display HD images at 1366x768 pixels for 720p graphics resolution (HD Ready). The input analog video signal can be processed in PAL, SECAM, NTSC systems. Graphic processing and formation of a digital signal picture occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the acoustic audio system 20 W (2x10 W) is provided by 4 speakers. NICAM STEREO sound processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, component, SCART x2, RGB, HDMI x2. A headphone output is provided for individual listening. To connect a computer or laptop, a VGA (D-Sub 15) connector is used that supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
Dimensions: with stand 791x615x301 mm, without stand 791x563x107 mm.
TV weight: without stand: 19 kg.
Attention! The LTA320W2-L13 panel of the PANASONIC TX-32LX60P LCD TV is a rather expensive component.
Avoid impacts on glass and pressure on the surface of the screen to avoid irreversible damage to the LCD panel!