Technical description and composition of the SHIVAKI STV-26L6 TV, type of panel and applicable modules. The composition of the modules.SHIVAKI
Model: STV-26L6
Panel: V260B1-L11 Rev C1
Inverter (backlight): VIT70063.50 Rev.3
PWM Inverter: OZ964GN
MOSFET Inverter: P4404EDG, P2504BDG
Trans Inverter: T51.0191.211
Power Supply (PSU): LK4180-000B
PWM Power: L6599D, L6562D, TDA4863G
MOSFET Power: P11NK50ZFP, FQPF5N60C
MainBoard: L2M015 (03) DTI1-E4I2RH, L2M015 (02)
IC MainBoard: MSD106CHL-LF-Z1, KH25L3206E, 25L3205DM2C
Tuner: DTI1-E412RH
Technical Specifications STV-26L6
SHIVAKI STV-26L6
General recommendations for repairing TV LCD
Repair of the SHIVAKI STV-26L6 TV is better to start with a thorough external inspection and diagnosis of the malfunction. It is advisable to carefully examine the internal and external components. Many visible signs make it possible to determine the future direction of troubleshooting and localization of the defect. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
Sometimes the SHIVAKI STV-26L6 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the common LKL- power supply module. When diagnosing and repairing the LKL-power supply unit, it is first necessary to check the fuse, and if it breaks, the power switch and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. 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.
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
If the SHIVAKI STV-26L6 TV does not have an image, but there is sound, the malfunction should be sought in the power converter of the backlight (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
Repair of the inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety during depressurization of lamps, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
On the motherboard, in case of a malfunction, it is first of all necessary to check the operability of all power stabilizers of the microcircuits and, if necessary, update the software (software). In some cases, it is necessary to check or replace (if necessary) the elements of the MB board (SSB) - MSD106CHL-LF-Z1, KH25L3206E.
Attention to users! Self-repair of a SHIVAKI STV-26L6 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Main features of the SHIVAKI STV-26L6 device:Installed matrix (LCD panel) V260B1-L11 Rev C1.
The VIT70063.50 inverter is used to power the backlight lamps, it is controlled by the OZ964GN PWM controller. A transformer T51.0191.211 is installed in the inverter converter. As power elements of the inverter, keys of the type P4404EDG, P2504BDG are used.
The necessary supply voltages for all nodes of the SHIVAKI STV-26L6 TV are generated by the power module LK4180-000B, or its analogs using microchips L6599D, L6562D, TDA4863G and power switches of the type P11NK50ZFP, FQPF5N60C.
MainBoard - the main board (motherboard) is an L2M015 module, using microchips MSD106CHL-LF-Z1, KH25L3206E, 25L3205DM2C and others.
The DTI1-E412RH tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V260B1-L11
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.2M (6-bit + FRC), CIE1931 72%Response Time: 3/5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 5 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
TV SHIVAKI STV-26L6 with LCD V260B1-L11, diagonal size 26 "(66 cm) 16: 9 format. The brightness of the screen is 500 cd / m² backlight fluorescent lamps CCFL (EEFL). Contrast, as the ratio of maximum brightness to the minimum is 800: 1. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation going on in a hundred Dart 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the sound system 10 W (2x5 W) provide 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, VGA. 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.
Overall dimensions: With a support of 581x406x180 mm, Without a support of 581x371x43 mm.
Attention! The SHIVAKI STV-26L6 LCD TV panel V260B1-L11 Rev C1 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!