Technical description and composition of the SONY KD-49XD7005 TV, panel type and applicable modules. The composition of the modules.SONY LED
Model: KD-49XD7005
Chassis / Version: BFM SONY
Panel: LC490EQY-SJA3 SYV4951
LED backlight: JDE 49 CSP DRT
T-CON: 6870C-0598A
LED driver (backlight): integrated into PSU
Power Supply (PSU): APS-395 B 1-980-310-21
PWM Power: MIP2H2 (STB)
MainBoard: 1-980-837-11 (198083711) Y200B740A
Tuner: CE243ZP V6E21AA
Control: IR: 1-894-333-11 (173543211), Wi-fi: J20H084.02-03S3 1-458-912-11 J20H084 802030
Technical Specifications KD-49XD7005
SONY KD-49XD7005
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SONY KD-49XD7005 does not turn on, the indicators on the front panel do not light up and do not blink. The TV does not respond to the control buttons and the remote control.
Failure in such cases should begin to look in the APS-395 power supply circuits. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches and rectifier diodes of the converters for a possible short circuit.
In the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers, in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN junction indirectly indicates a LED-a
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the motherboard 1-980-837-11 should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software).
If the TV works normally from external devices, but does not tune into television channels, the CE243ZP V6E21AA tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
It should be remembered! Attempts to self-repair a SONY KD-49XD7005 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
The appearance of MainBoard 1-980-837-11 is shown in the figure below:1-980-837-11
Main features of the device SONY KD-49XD7005:
Installed matrix (LED panel) LC490EQY-SJA3 SYV4951.
The matrix control uses the Timing Controller (T-CON) 6870C-0598A.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the SONY KD-49XD7005 TV is carried out by the APS-395 power module, or its analogs using MIP2H2 (STB) microcircuits.
MainBoard - the main board (motherboard) is a module 1-980-837-11.
The CE243ZP V6E21AA tuner provides TV reception and channel tuning.
SONY KD-49XD7005 TV with LC490EQY-SJA3 LCD, 49 "(124 cm) diagonal size in 16: 9 format. LCD backlight uses Direct LED backlighting.
The LC490EQY-SJA3 display and software (software) of the 1-980-837-11 board provide for viewing in high quality UHD 4K at a resolution of 3840x2160 pixels in the 4K UHD, HDR standard. Image processing is performed using modern High Dynamic Range (HDR) technologies with an extended range of brightness gradations.
The KD-49XD7005 TV has built-in SMART Software and preinstalled Android TV Operating System. Connecting to the Internet can be done via Wi-Fi. Video processor supported multimedia file formats: MP3, WMA, MPEG4, HEVC (H.265), MKV, JPEG.
The power of the sound speaker system 20 W (2x10 W) is provided by two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x4, USB x3, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11n, Miracast. An output for connecting headphones is provided.
The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
The power consumed by the TV in the operating mode from the network is 151 watts.
Overall dimensions: with stand 1107x690x235 mm, without stand 1107x651x78 mm.
TV Weight: with stand: 14.1 kg, without stand: 13.2 kg.
Attention! The SONY KD-49XD7005 LED TV panel LC490EQY-SJA3 SYV4951 is the most expensive element.
Avoid hitting the glass and excessive pressure on the screen surface to avoid damage to the LED panel!
It is unsafe to get any liquid on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the cables, the TV can become unrepairable.
