Technical description and composition of the TV SHIVAKI STV-24LEDGW9, type of panel and applicable modules. The composition of the modules.SHIVAKI LED
Model: STV-24LEDGW9
Chassis / Version: T.SIS231.T65
Panel: M236H3-LA3 // LM236H1-LE2 // M240HTN01.2
LED backlight: EDGE LED
LED driver (backlight): integrated into PSU
Power Supply (PSU): P.AE11.03 T185-L02 40W2
MainBoard: T.SIS231.T65
IC MainBoard: 25Q64BSIG, NT5CB64M16FP, YD1517P
Tuner: SI2T6Q
Technical Specifications STV-24LEDGW9
SHIVAKI STV-24LEDGW9
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SHIVAKI STV-24LEDGW9 TV does not turn on, does not respond to the remote control and the control panel buttons, does not light up or blink indicators.
In some of these cases, a fault is detected in the P.AE11.03 power module. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback (OOS) stabilization circuits. PWM controllers (PWM), if they do not have visible damage to the chassis and open short circuit between the terminals, are usually checked by replacement.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned 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.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the T.SIS231.T65 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - 25Q64BSIG, NT5CB64M16FP, YD1517P with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before changing the tuner SI2T6Q, if there is no possibility of tuning to television channels, you should make sure that there are supply voltages, which must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Once again, remind users! Attempts to independently repair the SHIVAKI STV-24LEDGW9 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
STV-24LEDGW9 - white case, STV-24LEDGR9 - red case, STV, 24LEDGM9 - brown case, STV-24LEDGO9 - orange case, STV-24LEDG9 - black case.
FIRMWARE FOR SPI FLASH -----------> SHIVAKI STV-24LEDGW9, Main: T.SIS231.T65, Panel: LM236H1-LE2 From the manufacturer
Variant SHIVAKI STV-24LEDGW9, Main Board: T.MSP309.B65T (B12373), Panel: V236H1-LE4 REV.C1
FIRMWARE FOR SPI FLASH -----------> SHIVAKI STV-24LEDGW9, Main: T.MSP309.B65T, Panel: V236H1-LE4 REV.C1
FIRMWARE FOR SPI FLASH -----------> SHIVAKI STV-24LEDGW9, Main: T.SIS231.T65, Panel: M236H3-LA3 REV.C1
Variant SHIVAKI STV-24LEDGW9, Main Board: TP.512.PA63, Panel: M240HTN01.2
FIRMWARE FOR SPI FLASH -----------> SHIVAKI STV-24LEDGW9, Main: TP.512.PA63, Panel: M240HTN01.2
Variant SHIVAKI STV-24LEDGW9, Main Board: T.MT5310.61B 11525, Panel: V236H1-LE4
FIRMWARE FOR SPI FLASH -----------> SHIVAKI STV-24LEDGW9, Main: T.MT5310.61B 11525, Panel: V236H1-LE4
The appearance of MainBoard T.SIS231.T65 is shown in the figure below:T.SIS231.T65
T.SIS231.T65 can be used on TVs:
DNS M24DM8 (Panel M236HGE-L20 ReV.C1), DNS 22AE7000 (Panel CX215LEDM), ERISSON 28LEP91 (Panel st2751a01-1), ROLSEN RL-19E1501T2C (Panel V185BJ1-PE1), RUBIN RB-22SE5FT2C (Panel LM215DA-T01), RUBIN RB-22SE9FT2C (Panel M215HTN01.1), SHIVAKI STV-24LEDGR9 (Panel M236HGE-L20 Rev.C1), SHIVAKI STV-24LEDGW9 (Panel M236H3-LA3), SHIVAKI STV-24LED12 (Panel M236HGE-P01), THOMSON T24E09DU-01B (Panel V236BJ1-P03 (C1)).
The appearance of the power supply
Main features of the SHIVAKI STV-24LEDGW9 device:
Installed matrix (LED-panel) M236H3-LA3 or LM236H1-LE2 or M240HTN01.2.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the TV SHIVAKI STV-24LEDGW9 are formed by the P.AE11.03 power module, or its analogs.
MainBoard - the main board (motherboard) is a T.SIS231.T65 module, using 25Q64BSIG, NT5CB64M16FP, YD1517P and other chips.
The SI2T6Q tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: M236H3-LA3
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.6 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 521.28x293.22 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 9S8P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
TV SHIVAKI STV-24LEDGW9 with LCD M236H3-LA3, diagonal size 24 "(61 cm) 16: 9 format. The required brightness of the screen 250 cd / m² is provided by LED backlight LED. Contrast, as the ratio of maximum brightness to minimum, is 800: 1. The LED-panel of this TV has end-face LED backlighting - Edge LED. The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). Input high frequency or video signal can be processed by analog systems, PAL, SECAM, NTSC Image processing and generation of the digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:.. MP3, JPEG.
The power of the sound speaker system 16 W (2x8 W) is provided by 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, 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, 1280x1024, 1360x768, 1920x1080.
A digital tuner is capable of receiving television channels in the DVB-T, DVB-C, DVB-T2 standards.
Overall dimensions: With a support of 581x409x160 mm, Without a support of 581x370x55 mm.
TV Weight: 5.9 kg.
Attention! The panel of the M236H3-LA3 SHIVAKI STV-24LEDGW9 LED TV 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.
