Technical description and composition of the SHIVAKI STV-32L2 TV, type of panel and applicable modules. The composition of the modules.SHIVAKI
Model: STV-32L2
Chassis / Version: LM21C
Panel: T315XW01 V.5
Power Supply (PSU): MLT070A
PWM Power: ML4800CS, FAN7601, LM358
MOSFET Power: 20N60, 9N50, 5N60
MainBoard: LM21E12U03 PA-0143, PA-0142 --- 4TG
IC MainBoard: TDA12063H1 / N1F80 MCT6151A 24c16 NVM
Tuner: TDQ-6F6 / T126D
SHIVAKI
Model: STV-32L2
Chassis / Version: PA-0118-2-3TG
Panel: T315XW02
T-CON: T315XW02 EM638325TS-6G
Inverter (backlight): 4H.V0708.381 / B1 mod. V070
PWM Inverter: OZ964SN, EZ3H646_339
Trans Inverter: 4010Q648.110 (GP)
Power Supply (PSU): ML4800SC
PWM Power: FAN7601
MainBoard: PA-0118-2-3TG L22E012001
IC MainBoard: MST9U88L-LF, 24LC32AI, TDA7297
Tuner: TDQ-6F6 / T126D (TDA6509ATT)
Technical Specifications STV-32L2
SHIVAKI STV-32L2
General recommendations for repairing TV LCD
Like any other TV, it is advisable to start the SHIVAKI STV-32L2 repair with an external examination of the visible changes in the external and internal elements. Many visible signs make it possible to determine the future direction of troubleshooting and localization of the defect. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
In the absence of any signs of operability, when the SHIVAKI STV-32L2 KALININGRAD does not turn on and does not signal anything with the control lights on the panel, the ML4800SC power supply module is most likely faulty. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the possibility of an avalanche or 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 FAN7601 PWM controller chip can also cause a breakdown of the power switch of the converter.
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
Sometimes the SHIVAKI STV-32L2 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all electrolytic capacitors of the filter according to the power supply of the inverter itself, including in the power supply unit (power supply unit).
Repair of the inverter 4H.V0708.381 / B1 mod. V070 is complicated by the fact that in case of any malfunction or emergency, even with uneven wear of the lamps, a protection is triggered, which turns it off for fire safety purposes. Diagnostics become impossible and protection needs to be disabled.
In such cases, the risk of failure of the power elements of the inverter is most likely, and special care is required during work, and after their completion, it is necessary to restore the protection circuit for further safe operation of the TV by the owner in normal mode.
Repair of the motherboard must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - MST9U88L-LF, 24LC32AI, TDA7297, tun TDQ-6F6 / T126D (TDA6509ATT) and replace failed chips with new ones.
We recommend the owners of the STV-32L2 TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Main features of the SHIVAKI STV-32L2 device:Installed matrix (LCD-panel) T315XW02.
The matrix control uses the Timing Controller (T-CON) T315XW02.
To power the backlight, an inverter 4H.V0708.381 is used, it is controlled by the PWM controller OZ964SN, EZ3H646_339. A transformer 4010Q648.110 (GP) is installed in the inverter converter.
The necessary supply voltages for all nodes of the SHIVAKI STV-32L2 TV are generated by the ML4800SC power supply module or its analogs using FAN7601 microcircuits.
MainBoard - the main board (motherboard) is a PA-0118-2-3TG module, using microcircuits MST9U88L-LF, 24LC32AI, TDA7297 and others.
The tuner TDQ-6F6 / T126D (TDA6509ATT) provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T315XW02 VU
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
TV SHIVAKI STV-32L2 with LCD T315XW02, diagonal size 32 "(81 cm) in 16: 9 format. The brightness of the screen is 500 cd / m² with fluorescent lights CCFL (EEFL). Contrast, as the ratio of maximum brightness to minimum, is 1000: 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. Stereo sound is realized by two built-in speakers. The system is used and audio processing NICAM STEREO.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, SCART x2, RGB, VGA, HDMI.
Overall dimensions: With a support of 540x440x200 mm, Without a support of 540x410x80 mm.
Attention! The T315XW02 panel of the SHIVAKI STV-32L2 LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!