Technical description and composition of the PANASONIC TX-LR39E6 TV, panel type and modules used. The composition of the modules.PANASONIC LED
Model: TX-LR39E6 TX-LR39E6W
Chassis / Version: LA41
Panel: V390HJ1-LE6
LED backlight: V390H1-LS6-TREM4
T-CON: V500HJ1-CE1
LED driver (backlight): L390H1-1EE
PWM LED driver: ATP360A13, 5208PB, 7203HA
Power Supply (PSU): TNPA5806 1 P
PWM Power: FA5760N, FA5696N, LV5980MC
MOSFET Power: STD7NM60
MainBoard: TNPH1041 1 A
IC MainBoard: MT5590CAHJ, K4B2G1646E-BQKO, H27U4G8F2DTR, AN34043A
Tuner: TDSA-G220D
Control: IR: TNPA5785 1K, WiFi Module N5HBZ0000102 8017-01620P
TX-LR39E6 Specifications
PANASONIC TX-LR39E6
General recommendations for TV LCD LED repair
Possible manifestations of defects
- The PANASONIC TX-LR39E6 TV does not turn on and does not show any signs of operation at all. No response to the remote control and front panel control buttons.
In such cases, you should start looking for a fault in the circuits of the TNPA5806 power supply. Its output voltages should be measured and, if they are absent, check the power switches (STD7NM60) and rectifier diodes for the probability of a short circuit in the converters.
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.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying a PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) FA5760N, FA5696N, LV5980MC, in the absence of external damage and short circuit between the terminals, are checked by replacing them with a known good one.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
A malfunction is usually in these cases most likely in the backlight units of the display matrix. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
It should be remembered that it is not possible to determine an open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then you need to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow opening the LED in the forward direction or dual LEds are used, then the PN transition of the emergency zener diode can indirectly serve as an indicator of serviceability. In the event of a malfunction of the LED-a, the PN-junction of the Zener diode will either be cut off, or broken through in the SC.
- 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 TNPH1041 motherboard should begin with checking the stabilizers and power converters required 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 - MT5590CAHJ, K4B2G1646E-BQKO, H27U4G8F2DTR, AN34043A. Defective components must be replaced.
Before replacing the TDSA-G220D tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
If the PANASONIC TX-LR39E6 has no picture, but there is sound, often the V390HJ1-LE6 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 V390HJ1-LE6 LCD panel - a process that requires experience and qualifications from the master. 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 the light through the holes in the panel case.
In this case, the panel may also be faulty - damage to 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 TNPH1041 turns out to be faulty, a software failure is also possible.
Then, first of all, you need to check the panel supply voltage, the 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 trace the passage of LVDS signals from the MainBoard TNPH1041 with an oscilloscope, 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 cables 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-LR39E6 Chassis LA41 for TX-LR39E6W
The MainBoard TNPH1041 is shown in the figure below:TNPH1041
External view of the power supply
The main features of the PANASONIC TX-LR39E6 device:
Installed matrix (LED panel) V390HJ1-LE6.
Matrix control uses the V500HJ1-CE1 Timing Controller (T-CON).
The LED driver L390H1-1EE is used to power the backlight LEDs, it is controlled by the PWM controller ATP360A13, 5208PB, 7203HA.
The formation of the necessary supply voltages for all nodes of the PANASONIC TX-LR39E6 TV is carried out by the TNPA5806 power module, or its analogs using FA5760N, FA5696N, LV5980MC microcircuits and STD7NM60 type power switches.
MainBoard - the main board (motherboard) is a TNPH1041 module using MT5590CAHJ, K4B2G1646E-BQKO, H27U4G8F2DTR, AN34043A and others.
The TDSA-G220D tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V390HJ1-LE6
Type: a-Si TFT-LCD, Panel
Diagonal size: 39 inch
Resolution: 1920x1080, FHD
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 853.92x480.33 mm
Surface: Antiglare (Haze 1%), Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 3500: 1
Display Colors: 16.7M (8-bit), CIE1931 68%
Response Time: 8.5 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
The V390HJ1-LE6 panel and TNPH1041 motherboard firmware provide HD and Full HD viewing at 1920x1080 pixels in 1080p (Full HD) graphics.
The TX-LR39E6 TV is equipped with SMART software, built-in applications and the ability to work on the Internet. 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 standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Multimedia file formats supported by the video processor: MP3, WMA, MPEG4, MKV, JPEG.
The power of the acoustic audio system is 20 W (2x10 W) provided by two speakers. Uses NICAM stereo signal system and Sound Surround function.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART, RGB, HDMI x3, USB x2, Ethernet (RJ-45), Wi-Fi. A headphone output is provided for individual listening. To connect a computer or laptop, a VGA (D-Sub 15) connector is used, supporting resolutions: 1920x1080.
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 38 W.
Dimensions: with stand 879x573x217 mm, without stand 879x519x49 mm.
TV weight: with stand: 12.5 kg, without stand: 11 kg.
Attention! The panel V390HJ1-LE6 (L5EDDYY00478) of the PANASONIC TX-LR39E6 LED TV is its most expensive element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.
