Technical description and composition of the PANASONIC TX-55CR430E TV, panel type and modules used. The composition of the modules.PANASONIC LED
Model: TX-55CR430E
Chassis / Version: 17MB100
Panel: LTA550FW01
LED backlight: SVS550AB5 REV7.1 7COB 140702
T-CON: 14Y_P2FU13TMGC4LV0.0
LED driver (backlight): 17CON16 23223947
Power Supply (PSU): 17PW03 -9 23232185 27394027
PWM Power: NCP1653 (PFC), FAN7711, FSDL321 (Stb)
MOSFET Power: STP20NE06LFP, MTP6N60E
MainBoard: 17MB100 23271175 27424295 DIJFW01-G02
IC MainBoard: MSD95C0H, MX25L512, TAS5719
Tuner: SI2158, M88TS2022
Control: IR: 17LD177, WiFi: 17WFM03 TWFM-L001D, Bluetooth: GE009RF1-V1.0
TX-55CR430E Specifications
PANASONIC TX-55CR430E
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- PANASONIC TX-55CR430E does not turn on, indicators on the front panel do not light or blink. The TV does not respond to the control buttons and the remote control.
In some of these cases, the main switching power supply, the 17PW03 module, turns out to be faulty. Then we recommend measuring its output voltages and, if they are absent, you should check the serviceability of the power switches (STP20NE06LFP, MTP6N60E) and the rectifier diodes of the converters for a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually operate in an emergency in the short-circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse often breaks.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM) NCP1653 (PFC), FAN7711, FSDL321 (Stb), if they have no visible damage to the case and an outright short circuit between the terminals, are usually checked by replacing.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
As a rule, in such cases there is no display backlight. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
When trying to detect a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the 17MB100 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). If it is not possible to replace the MB (SSB) board, it is necessary to check the serviceability of its elements - MSD95C0H, MX25L512, TAS5719. Defective components must be replaced.
Before replacing the tuner SI2158, M88TS2022, if there is no tuning to the channels, you must first check the software and the supply voltage at its outputs. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
If the PANASONIC TX-55CR430E has no picture, but there is sound, often the LTA550FW01 display backlight simply does not work. Moreover, in LED TVs, the LEDs inside the panel usually fail, less often the LED driver.
In such cases, you can see a barely noticeable image with a successful hit of external light on the screen.
Replacing the LEDs requires disassembling the LTA550FW01 LCD panel, a process that requires experience and qualifications from the technician. We do not recommend doing such work on your own to the owners of TVs and craftsmen who do not have experience in repairing LCD panels
If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV you can see light through the holes in the panel case.
In this case, the panel may also be faulty - damage to the strips, loops, for example, as a result of moisture ingress after unsuccessful washing of the screen, the T-CON (Timing Controller) board may be faulty. But often the main board MainBoard 17MB100 turns out to be faulty, a software failure is also possible.
Then, first of all, it is necessary to check the panel supply voltage, fuses on the T-CON board, as well as the supply and reference voltages of the column and line drivers - VGH, VGL, Vcom.
If these measurements are within the normal range, it is necessary to use an oscilloscope to trace the passage of LVDS signals from the MainBoard 17MB100, as well as synchronization signals to the loops with drivers.
Flooded or unsuccessfully washed screens of LED TVs can be restored, in about half of the cases, usually if significant damage has not formed in the loops and panel strips.
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-55CR430E Chassis 17MB100
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> 17PW03-9 Power supply
The appearance of the MainBoard 17MB100 is shown in the figure below:17MB100
External view of the power supply
Main features of the PANASONIC TX-55CR430E device:
Installed matrix (LED-panel) LTA550FW01.
Matrix control uses Timing Controller (T-CON) 14Y_P2FU13TMGC4LV0.0.
The LED driver 17CON16 is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the PANASONIC TX-55CR430E TV is carried out by the 17PW03 power supply module, or its analogs using NCP1653 (PFC), FAN7711, FSDL321 (Stb) microcircuits and power switches of the STP20NE06LFP, MTP6N60E type.
MainBoard - the main board (motherboard) is a 17MB100 module, using MSD95C0H, MX25L512, TAS5719 and others.
Tuner SI2158, M88TS2022 provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA550FW01
Type: a-Si TFT-LCD, Panel
Diagonal size: 55 inch
Resolution: 1920x1080, FHD
Display Mode: PVA, Normally Black, Transmissive
The composition uses MainBoard 17MB100 DIJFW01-G02 and LCD-panel LTA550FW01.
Power Supply Unit (PSU) 17PW03-9 23232185 27394027 Power Supply.
PANASONIC TX-55CR430E TV with LCD LTA550FW01, 55 "(140 cm) diagonal in 16: 9 format. The LCD-panel of the TV is equipped with direct backlighting with rear-mounted LEDs - Direct LED.
There is support for 3D images with active (shutter) separation technology of the right and left channels.
Display LTA550FW01 The software of the 17MB100 board allows viewing images in high quality UHD 4K at a resolution of 3840x2160 pixels in the 4K UHD graphics standard.
The TX-55CR430E is equipped with SMART software, built-in applications and Internet connectivity. Internet connection can be made via Wi-Fi wireless connection. 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 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p standards. Multimedia file formats supported by the video processor: MP3, WMA, MPEG4, MKV, JPEG. Stereo sound and the required sound output is realized by two built-in speakers. Uses NICAM stereo signal system and Sound Surround function.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART, HDMI x4, USB x3, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11n. To connect a computer or laptop, a VGA (D-Sub 15) connector is used that supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080, 3840x2160.
The digital tuner is capable of receiving terrestrial and cable channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The power consumed by the TV in operating mode from the network is 200 watts.
Dimensions: with stand 1232x775x344 mm, without stand 1232x713x107 mm.
Attention! Panel LTA550FW01 LED-TV PANASONIC TX-55CR430E is the most expensive element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
Liquid spillage on the screen is unsafe. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.