Technical description and composition of the SHIVAKI STV-32L3 TV, type of panel and applicable modules. The composition of the modules.SHIVAKI
Model: STV-32L3
Panel: LC320WX3 (SL) (A1)
Inverter (backlight): HS-EE32WL-M REV 0.1 6632L-0342B 6632L-0343B
Power Supply (PSU): FSP205-4E01
PWM Power: NCP1014, TNY264, FAN7530 (PFC), L6598 (PWM Resonant)
MainBoard: L22E012001 // JUG7.820.015 Ver2.0
IC MainBoard: MST9U88L-LF, 25L040, 24C32
Tuner: TDQ-6F6 / T126D
Technical Specifications STV-32L3
SHIVAKI STV-32L3
General recommendations for repairing TV LCD
It is advisable to start diagnosing a malfunction of the SHIVAKI STV-32L3 TV, like all others, with an external examination of possible changes, both external and internal elements. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
In the absence of any signs of operability, when the SHIVAKI STV-32L3 does not turn on and does not signal anything with the control lights on the panel, the power supply module FSP205-4E01 is most likely faulty. In this case, first of all, it is necessary to check the fuse at the mains input. 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 N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller NCP1014 TNY264 FAN7529MX (8) FAN7530 L6598 (16) , which can be checked only by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If the SHIVAKI STV-32L3 TV does not have an image, but there is sound, the malfunction should be sought in the backlight power converter (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 HS-EE32WL-M REV 0.1 6632L-0342B 6632L-0343B is complicated by the fact that in case of any malfunction or emergency, even if the lamps are unevenly worn, protection is triggered, which turns it off for fire safety. Diagnostics become impossible and protection needs to be disabled.
It should be remembered that in such cases there is a risk of failure of the power elements of the inverter and to take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Owners and users of the SHIVAKI STV-32L3 TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
Repair MainBoardThe appearance of MainBoard PA-0157-1TG is shown in the figure below:
PA-0157-1TG
PA-0157-1TG can be used in TVs:
SHIVAKI LCD-2610DVD (Panel 26 "), SHIVAKI STV-26L2 (Panel SHFA060297641).
PSU Advanced
The STV-32L3 model uses the FSP205-4E01 power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, it is a boost converter based on the FAN7530 PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes, when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
Main features of the SHIVAKI STV-32L3 device:
Installed matrix (LCD panel) LC320WX3 (SL) (A1).
To power the backlight used inverter HS-EE32WL-M.
The necessary supply voltages for all nodes of the SHIVAKI STV-32L3 TV are generated by the FSP205-4E01 power supply module or its analogs using NCP1014, TNY264, FAN7530 (PFC), L6598 (PWM Resonant) microcircuits.
MainBoard - the main board (motherboard) is a module L22E012001, using microcircuits MST9U88L-LF, 25L040, 24C32 and others.
Tuner TDQ-6F6 / T126D provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320WX3-SLA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 700: 1
Display Colors: 16.7M (8-bit)
Response Time: 8/10 (Tr / Td)
Frequency: 60Hz
Lamp Type: 18 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0 volt.
TV SHIVAKI STV-32L3 with LCD display LC320WX3, diagonal size 32 "(81 cm) 16: 9 format. The brightness of the screen 500 cd / m² is provided with fluorescent lights CCFL (EEFL). Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of 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 takes place in mill Darts 480i, 480p, 576i, 576p, 720p, 1080i. Stereo sound is realized by two built-in speakers. NICAM STEREO audio processing system is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x3, audio x4, S-Video, component x2, VGA, HDMI x2. 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, 1360x768.
Overall dimensions: With a support of 540x440x200 mm, Without a support of 540x410x80 mm.
The mass of the TV: 23 kg.
Attention! The SHIVAKI STV-32L3 LCD TV panel LC320WX3 (SL) (A1) is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!