Technical description and composition of the PANASONIC TX-32LE60PK TV, panel type and modules used. The composition of the modules.PANASONIC
Model: TX-32LE60PK
Chassis / Version: GLP21
Panel: T315XW02 V.2
Lamp backlight: CCFL
T-CON: UT-5531T03009 05A30-1A (T315XW02)
Inverter (backlight): 4H.V0708.411 / B
Trans Inverter: 4008Q
Power Supply (PSU): TNP8EPL50
PWM Power: F9222L
MOSFET Power: 2SK3767
MainBoard: TNP8EAL40
IC MainBoard: VCT6973G, TEA6422DT, 24C32AN, TDA8931T
Tuner: ENG37A21GF (board TNP8EBL40)
Control: IR: TNP8EVL40, Remote: EUR7651030A
TX-32LE60P Specifications
PANASONIC TX-32LE60PK
General recommendations for TV LCD repair
Possible manifestations of defects
- The PANASONIC TX-32LE60PK does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
In some of these cases, the main switching power supply, the TNP8EPL50 module, is faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches (2SK3767) and rectifier diodes for possible partial or complete breakdown.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short-circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers F9222L, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.
- There is no picture, 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 provoked by the power module, or by defects in the inverter, as well as by the skew of currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, you should ring the power switches in its converter for breakdown and the secondary windings of the transformers for an open.
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 indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.
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 - VCT6973G, TEA6422DT, 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 supply voltage of the ENG37A21GF tuner (board TNP8EBL40) and update the software. I2C communication pulses must be monitored with an oscilloscope.
Owners of the TX-32LE60PK TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> PANASONIC TX-32LE60P Chassis GLP21
MainBoard TNP8EAL40 is shown in the figure below:TNP8EAL40
External view of the power supply
Main features of the PANASONIC TX-32LE60PK device:
Installed matrix (LCD panel) T315XW02 V.2.
Matrix control uses the Time Controller (T-CON) UT-5531T03009.
The inverter 4H.V0708.411 is used to power the backlight lamps. A 4008Q transformer is installed in the inverter converter.
The formation of the necessary supply voltages for all nodes of the PANASONIC TX-32LE60PK 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 with VCT6973G, TEA6422DT, 24C32AN, TDA8931T and others.
The ENG37A21GF tuner (board TNP8EBL40) provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T315XW02 V2
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: 400 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
PANASONIC TX-32LE60P TV with LCD T315XW02, 32 "(81 cm) diagonal in 16: 9 format. Contrast, as the ratio of maximum brightness to minimum, is 1200: 1.
The T315XW02 panel and TNP8EAL40 board 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.
Speaker power 16 W (2x8 W) is provided by two 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. 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.
The power consumed by the TV in operating mode from the network is 117 watts.
Dimensions: with stand 791x615x301 mm, without stand 791x563x107 mm.
TV weight: without stand: 17.4 kg.
Attention! The panel T315XW02 V.2 of the PANASONIC TX-32LE60P 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!