Technical description and composition of the PANASONIC TX-LR37S10 TV, panel type and modules used. The composition of the modules.PANASONIC
Model: TX-LR37S10 TX-L37S10
Chassis / Version: KM03
Panel: LC370WUN (SA) (C1)
T-CON: 6870C-0232A LC370WUN
Inverter (backlight): 6632L-0513A KLS-EE37TKF16 REV-1.
Power Supply (PSU): TNP4G454
PWM Power: MP2B6120 (C0DABYY00008), FA5501AN (C0DBBZG00004), FA7734
MOSFET Power: 13N60E (B1DEGR000060)
MainBoard: TNP4G461
IC MainBoard: MN2WS0053, MN103SH9F, LA4920
Tuner: ENG39E04GF
Control: IR: TNPA4834
TX-L37S10 Specifications
PANASONIC TX-LR37S10
General recommendations for TV LCD repair
Possible malfunctions
- The PANASONIC TX-LR37S10 TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
Most often, with similar manifestations, the main power module TNP4G454 turns out to be faulty. It is necessary to measure its output supply voltages, and if they are absent, check the serviceability of the power switches (13N60E (B1DEGR000060)) of the converters and rectifier diodes for the probability of breakdown in semiconductor PN junctions.
In case of breakdowns in the secondary circuits, the converter, as a rule, can operate in an emergency mode in the short-circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse is usually cut off.
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) MP2B6120 (C0DABYY00008), FA5501AN (C0DBBZG00004), FA7734, if they do not have visible damage to the case and an outright short circuit between the terminals, are usually checked by replacement.
- 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.
A defect can be caused by problems in the nodes or elements of the display backlight, or in the power supply of lamps or inverter.If all electrolytic capacitors of the filter for the power supply of the inverter are in good order, you should make sure that the lamps are in good working order, then you need to check the converter keys and secondary windings of the transformers.
If, when diagnosing a malfunction, it is required to turn off the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are completed, it is imperative to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not turn on, the indicator signals the standby or operating mode, or blinks.
Repair or diagnostics of the TNP4G461 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). In cases of complex MB (SSB) repairs and with the necessary skills and equipment, it may sometimes be necessary to replace its MN2WS0053, MN103SH9F, LA4920 chips and other possible faulty components. Malfunctions associated with the use of BGA soldering technologies are usually easily diagnosed by the warm-up method.
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 ENG39E04GF tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Owners of the TX-LR37S10 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!
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TX-L32S10B, TX-L32S10E, TX-L32S10L, TX-L37S10B, TX-L37S10E, TX-L37S10L, TX-LF32S10, TX-LF37S10.
MainBoard TNP4G461 is shown in the figure below:TNP4G461
External view of the power supply
The main features of the PANASONIC TX-LR37S10 device:
Installed matrix (LCD panel) LC370WUN (SA) (C1).
Matrix control uses the 6870C-0232A Timing Controller (T-CON).
The inverter 6632L-0513A is used to power the backlight lamps.
The formation of the necessary supply voltages for all nodes of the PANASONIC TX-LR37S10 TV is carried out by the TNP4G454 power module, or its analogs using the MP2B6120 (C0DABYY00008), FA5501AN (C0DBBZG00004), FA7734 and power switches of the 13N60E type (B1DEGR000060).
MainBoard - the main board (motherboard) is a TNP4G461 module, using microcircuits MN2WS0053, MN103SH9F, LA4920 and others.
The ENG39E04GF tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC370WUN-SAC1
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 819.36x460.89 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1300: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + Dithering)
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: EEFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8/10-bit), 51 pins
Voltage: 12.0V
PANASONIC TX-L37S10 TV with LCD LC370WUN, 37 "(94 cm) diagonal in 16: 9 format. Dynamic contrast ratio of 20,000: 1 is provided by special control of the backlight depending on the illumination of areas in the scene.
The LC370WUN panel and TNP4G461 motherboard firmware provide HD and Full HD viewing at 1920x1080 pixels in 1080p (Full HD) graphics. 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: 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.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x3, audio x3, S-Video, component x2, VGA, HDMI x3. 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 915x620x287 mm, without stand 915x577x97 mm.
TV weight: 17 kg.
Attention! The LC370WUN (SA) (C1) panel of the PANASONIC TX-L37S10 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!
