Technical description and composition of the SUPRA STV-LC1501 TV, panel type and modules used. The composition of the modules.SUPRA
Model: STV-LC1501
Chassis / Version: MSDV1501-ZC01-01
Panel: HT150X02-100
Lamp backlight: 2 Lamp CCFL
MainBoard: MSDV1501-ZC01-01
IC MainBoard: CPU - MST718BE-LF, Eeprom - 24C16, Flash - Winb25X20 (A)
Technical Specifications STV-LC1501
SUPRA STV-LC1501
General recommendations for TV LCD repair
It is advisable to start repairing all electronic devices, including the SUPRA TV based on the MSDV1501-ZC01-01 chassis, 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 starting the necessary measurements. If ring cracks are found in the soldering of the element terminals or broken connecting paths, swollen capacitors or charred resistors - all this may be characteristic signs of the causes or consequences of an already known typical malfunction.
Power supply module malfunctions can be expressed in different ways, for example, SUPRA STV-LC1501 does not turn on at all and the control lamps on its front panel do not light up or blink, all signs of operability are absent. It should be noted that the processor power regulator (converter) may be faulty with the same external manifestations. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. When it is broken, the power elements of the transistors and diodes of the rectifier bridge should be checked for avalanche (thermal) breakdown.
In most cases, breakdowns of keys in switching power supplies (SMPS) do not occur without reason and you should look for other faulty circuit elements that could provoke a defect. This can be dry electrolytic capacitors in the primary circuit, and faulty damper elements, as well as broken resistors or punctured semiconductor elements in the stabilization circuits. Possible defect of the PWM chip from the manufacturer.
Sometimes the SUPRA STV-LC1501 TV has no picture, but there is sound, or the picture appears and disappears immediately. In this case, there is a high probability of a malfunction of the backlight converter, or the lamps themselves, which can be checked by replacing. In such cases, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the inverter itself, including the power supply unit (power supply unit). When diagnosing a malfunction of an inverter with disabled protection, special care must be taken, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
The motherboard MSDV1501-ZC01-01 must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power regulators of the microcircuits are working, it may be necessary to update the software. Complex repair of MB (SSB) board is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the CPU elements - MST718BE-LF, Eeprom - 24C16, Flash - Winb25X20 (A). BGA chip malfunctions are usually easy to detect by warming up.
Remember! Attempts to self-repair the SUPRA STV-LC1501 TV by users without appropriate qualifications and the necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC1501 , Main: MSDV1501-ZC01-01, Panel: HT150X02-100
Main features of SUPRA STV-LC1501 device:
Installed matrix (LCD panel) HT150X02-100.
The required supply voltage for all nodes of the TV SUPRA STV-LC1501 provides a switching power supply.
MainBoard - the main board (motherboard) is an MSDV1501-ZC01-01 module, using CPU chips - MST718BE-LF, Eeprom - 24C16, Flash - Winb25X20 (A) and others.
Additional technical information about the panel:
Brand: BOE
Model: HT150X02-100
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.0 inch
Resolution: 1024x768, XGA
Display Mode: TN, Normally White, Transmissive
Active Area: 304.128x228.096 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 500: 1
Display Colors: 16.2M (6-bit + FRC), CIE1931 60%
Response Time: 2/6 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 20 pins
Voltage: 3.3V
LCD TV SUPRA STV-LC1501 with LCD display HT150X02-100, diagonal size 15 "4: 3. Brightness of the screen of 250 cd / m2 is provided by CCFL (EEFL) fluorescent lamps. Contrast - the ratio of maximum brightness to minimum is 450 : 1. The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping takes place in the 480i, 480p, 576i, 576p standards.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The 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, audio x2, S-Video, component, SCART, RGB, 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 stand 876x653x180 mm, Without stand 540x390x145 mm.
Attention! SUPRA STV-LC1501 LCD TV panel HT150X02-100 is its most expensive component.
Avoid hitting the glass and pressing on the screen surface to avoid irreversible damage to the LCD panel!