Technical description and composition of the TV SHIVAKI STV-24LEDG7, type of panel and applicable modules. The composition of the modules.SHIVAKI LED
Model: STV-24LEDG7
Panel: V236H1-P01
T-CON: M236H1-L08-X + C T-Con (glued)
PWM LED driver: HQ9001
MOSFET LED driver: 4606
MainBoard: MSD306.3B 10196
IC MainBoard: MSD306PT-LF-Z1 W25Q32DVSIG
Tuner: DT82WT-3R-E
SHIVAKI LED
Model: STV-24LEDG7
Panel: M240HW01
Power Supply (PSU): CTN055-L Rev: 1.2
MainBoard: MSD308PX-LF-Z1
IC MainBoard: FlASH: EN25Q32
Technical Specifications STV-24LEDG7
SHIVAKI STV-24LEDG7
General repair guidelines for TV LCD LED
Repair of electronic devices, including the SHIVAKI STV-24LEDG7 TV, it is advisable to start with an external examination of its external and internal elements. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. In most cases, the repairman can guess the causes of the defect and possible consequences from the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
If the STV-24LEDG7 TV does not turn on, does not make any sounds when turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the stabilizer or power converter of the control processor may be faulty, which is typical for some SHIVAKI models. In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip can also cause a breakdown of the power switch of the converter.
In cases where the SHIVAKI STV-24LEDG7 TV has lost an image, and the sound is there and all the other functions are functional, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the M240HW01 panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with 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.
Diagnostics and repair of the motherboard MSD308PX-LF-Z1 is carried out by checking the performance of the stabilizers or power converters of the module chips. In some cases, a software update is required.
Board repair and replacement of FlASH chips: EN25Q32 are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Attention! Users and owners of STV-24LEDG7 TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.
FIRMWARE FOR SPI FLASH -----------> Shivaki STV-24LEDG7, MSD308PX-LF-Z1, Flash: EN25Q32, Panel: M240HW01
If a failure occurs in the SPI FLASH software from Winbond, we recommend that you replace the chip with a new one. Often, unreadable Winbond microcircuits can temporarily restore their functionality after a strong temperature exposure, for example, heating with a soldering station or a lighter. Sometimes this is enough to read its regular contents.
Main features of the SHIVAKI STV-24LEDG7 device:Installed matrix (LED-panel) M240HW01.
The formation of the necessary supply voltages for all nodes of the SHIVAKI STV-24LEDG7 TV is carried out by the CTN055-L power module, or its analogues.
MainBoard - the main board (motherboard) is an MSD308PX-LF-Z1 module, using FlASH chips: EN25Q32 and others.
Additional technical information about the panel:
Brand: AUO
Model: M240HW01 V80A
Type: a-Si TFT-LCD, Panel
Diagonal size: 24.0 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 531.36x298.89 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 3.5 / 1.5 (Tr / Td)
Frequency: 120Hz
Lamp Type: 14S4P WLED Without Driver
Signal Interface: LVDS (4 ch, 8-bit), 66 pins
Voltage: 5.0V
TV SHIVAKI STV-24LEDG7 with LCD display M240HW01, diagonal size 24 "(61 cm) 16: 9 format. The required brightness of the screen 300 cd / m² is provided by LED backlight LED. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. The LED-panel of this TV has an end LED backlight - Edge LED.The TV design and technical features include viewing programs and movies in high quality HD with a resolution of 1920x1080 pixels in a graphic resolution of 1080p (Full HD) standard. astotny or video signal can be processed in analog systems PAL, SECAM, NTSC Image processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:.. MP3, WMA, JPEG.
The power of the sound system 20 W (2x10 W) provides two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART, VGA, HDMI x2, USB. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
A digital tuner is capable of receiving television channels in DVB-T standards.
Overall dimensions: With a support of 581x406x180 mm, Without a support of 581x371x43 mm.
Attention! The SHIVAKI STV-24LEDG7 LED TV panel M240HW01 is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.
