Technical description and composition of the SONY KD-49XG7005 TV, panel type and modules used. The composition of the modules.
SONY LED
Model: KD-49XG7005
Chassis / Version: BB9
Panel: YS9S049HNG01
LED backlight: LB49028, LB49029
T-CON: 6870C-0814A 6871L-5988BJ
LED driver (backlight): 1-981-457-16 A2216767C (173638816)
PWM LED driver: BD9423EFV
MOSFET LED driver: 20N10
Power Supply (PSU): Adapter 19.5V
MainBoard: 1-983-119-22 A5000251A (173703222)
IC MainBoard: CPU, eMMC, AUDIO, DC / DC
Tuner: CE251ZP
Control: IR: 1-981-960-12, WiFi: DNUR-SY3 1-458-959-13
Specifications KD-49XG7005
SONY KD-49XG7005
General recommendations for TV LCD LED repair
Possible malfunctions
- SONY KD-49XG7005 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or blink, the TV does not respond to control buttons.
With similar manifestations, in some cases, the adapter power supply module is faulty.
The owner of the TV can purchase an external power supply Adapter 19.5V on his own, and its repair is not always advisable, but sometimes it makes sense to open it and eliminate simple defects typical of the SMPS. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for possible partial or complete breakdown.
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is most often cut off.
Breakdown of Mos-Fet keys used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) are usually checked by replacing them with new ones, or knowingly working.
- There is no image, the screen is black, there is sound, when the screen is illuminated outside, you can sometimes see barely noticeable outlines of the image.
In such cases, the most likely malfunction of the LED panel backlighting elements. The reason may be in the breakage of the backlight LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the LB49028, LB49029 strings connectors.
To check the LED strips for breakage without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter; a voltage of the order of several tens of volts is required.
- 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 motherboard 1-983-119-22 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 you suspect that the tuner CE251ZP. Is faulty, first of all, you need to make sure that the software is correct, as well as the presence of the necessary levels of supply voltages and pulses of data exchange with the processor via the I2C bus on the corresponding terminals of the tuner.
Once again, I 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.
Additional MainBoard Repair
The appearance of MainBoard 1-983-119-22 is shown in the figure below:
1-983-119-22
Main features of SONY KD-49XG7005 device:
Installed matrix (LED-panel) YS9S049HNG01.
Matrix control uses the 6870C-0814A Timing Controller (T-CON).
The LED driver 1-981-457-16 is used to power the backlight LEDs, it is controlled by the PWM controller BD9423EFV. The keys of the 20N10 type are used as power elements of the LED driver.
An external adapter 19.5V type is used to power all internal components of the SONY KD-49XG7005 TV.
MainBoard - the main board (motherboard) is a 1-983-119-22 module, using CPU, eMMC, AUDIO, DC / DC chips and others.
Tuner CE251ZP provides reception of television programs and tuning to channels.
Instructions and updates
Firmware update to v8.882:
File sony_tvupdate_2017_8882_eff_auth.zip, version 8.882 dated 06/22/2020 (296 861 100 bytes).
For
models: KD65X7053, KD65X7052, KD55X7053, KD55X7052, KD49X7053,
KD49X7052, KD43X7053, KD43X7052, KD65X7055, KD65X7056, KD55X7055,
KD55X7056, KD49X7055, KD49X7056, KD43X7055, KD43X7056, KD65XG7005,
KD55XG7005, KD49XG7003, KD49XG7005, KD43XG7005, KD43XG7077, KD43XG7096,
KD43XG7004, KD43XG7073, KD43XG7093, KD49XG7077, KD49XG7096, KD49XG7004,
KD49XG7073, KD49XG7093, KD55XG7073, KD55XG7077, KD55XG7096, KD55XG7004,
KD55XG7093, KD65XG7073, KD65XG7077, KD65XG7096, KD65XG7004, KD65XG7093,
KD43XG7003, KD43XG7002, KD49XG7002, KD55XG7003, KD55XG7002, KD65XG7003,
KD65XG7002, KD49XF7003, KD43XF7003, KD65XF7005, KD55XF7005, KD49XF7005,
KD43XF7005, KD55XF7000, KD49XF7000, KD43XF7000, KD55XF7073, KD49XF7073,
KD43XF7073, KD55XF7077, KD49XF7077, KD43XF7077, KD65XF7093, KD55XF7093,
KD49XF7093, KD43XF7093, KD65XF7096, KD55XF7096, KD49XF7096, KD43XF7096,
KD49XF7002, KD43XF7002, KD65XF7004, KD55XF7004, KD49XF7004, KD43XF7004,
KD65XF7003, KD55XF7003, KD65XF7002, KD55XF7002.
The update file and instructions can be downloaded from the manufacturer's website for the KD-49XG7005 model.
Benefits and improvements:
Fixed an issue where subtitles of some TV service providers were displayed incorrectly;
Improved overall TV stability.
Guides and instructions are also offered for this model:
Reference Manual (Web Manual). Published on 29 Nov 2019.
Directory. Published on 09 Mar 2020, size 858 KB.
Other. Published on 28 Nov 2019, size 276 KB.
Quick setup guide and quick start guide. Published on 16 Aug 2019, size 705 KB.
SONY TV KD-49XG7005 with YS8S490HNG01 LCD, 48.5 "(123 cm) 16: 9 aspect ratio. This model uses Edge LED side illumination.
The YS8S490HNG01 sensor and MainBoard 1-983-119-11 software are capable of realizing the highest UHD image quality at 3840x2160 resolution in 4K UHD, HDR. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
KD-49XG7005 TV has built-in SMART software and pre-installed Linux Operating System. Internet connection can be made via Wi-Fi wireless connection. Video processor supported media file formats: MP3, WMA, HEVC (H.265), Xvid, MKV, JPEG.
The power of the sound speaker system is 20 W (2x10 W), provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x3, USB x3, Ethernet (RJ-45), Wi-Fi 802.11n. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.
The power consumed when operating from the mains is 115 W. External power supply Adapter AC / DC 19.5V.
Dimensions: with stand 1101x704x260 mm, without stand 1101x645x57 mm.
TV weight: with stand: 12.5 kg, without stand: 11.9 kg.
Attention! The YS8S490HNG01 panel of SONY KD-49XG7005 LED TV is the most expensive item.
Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!
It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable.