Technical description and composition of the GOLDSTAR LT-32A320R TV, panel type and modules used. The composition of the modules.GOLDSTAR LED
Model: LT-32A320R
Chassis / Version: MS82S
Panel: LTA320AN01 // LVW320CSTT
LED backlight: G1GE-320SM0-R5, LJ64-03019A
T-CON: 1CA320AP18S4LV0.1
LED driver (backlight): SSL320_0E2B
PWM LED driver: SSL100SN
MOSFET LED driver: APM1101N, APM4015P
Power Supply (PSU): 40-P081C0-PWD1XG
PWM Power: VIPER17L, FAN6754
MainBoard: 40-MS82S0-MAD2XG (H)
IC MainBoard: CPU: MST6E182VS-LF, SPI Flash: 25Q32, EEPROM: 24C64
Tuner: F35WT-3-E
LT-32A320R Specifications
GOLDSTAR LT-32A320R
General recommendations for TV LCD LED repair
Possible malfunctions
- The GOLDSTAR LT-32A320R TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
Often in such cases, the power module 40-P081C0-PWD1XG is faulty. Its output voltages should be measured and, in their absence, the power switches and rectifier diodes should be checked for the probability of a short circuit in the converters.
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is most often cut off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying a PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) VIPER17L, FAN6754, in the absence of external damage and short circuit between the terminals, are checked by replacing them with a known good one.
- There is no image, there is sound, it reacts to the remote control. Or the image may appear for a second when turned on and immediately disappear.
Often, in such cases, there is no backlighting of the LED panel. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
It should be remembered that it is not possible to determine an open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then you need to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow opening the LED in the forward direction or dual LEds are used, then the PN transition of the emergency zener diode can indirectly serve as an indicator of serviceability. In the event of a malfunction of the LED-a, the PN-junction of the Zener diode will either be cut off, or broken through in the SC.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the 40-MS82S0-MAD2XG motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Complex repair of MB (SSB) is possible only in a service center with the necessary equipment. Checking or replacing CPU elements: MST6E182VS-LF, SPI Flash: 25Q32, EEPROM: 24C64 requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
If the TV operates normally from external devices, but does not tune to TV channels, the F35WT-3-E tuner may be faulty. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the reason for the inoperability of the tuner may be a software failure.
Attention to users! Self-repair of the GOLDSTAR LT-32A320R TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> EEPROM GOLDSTAR LT-32A320R MS82S, Main: 40-MS82S0-MAD2XG (H), Panel: LVW320CSTT
The appearance of the MainBoard 40-MS82S0-MAD2XG is shown in the figure below:40-MS82S0-MAD2XG
40-MS82S0-MAD2XG can be used in TVs:
ERISSON 23LET70 (Panel LTA230AP01), GOLDSTAR 32A340R (Panel LVW320SSTM E1), GoldStar LT-42A320F (Panel LVF420AUBK), MYSTERY MTV-3225LW (Panel LVM320CSTME13V4), MYSTERY MTV-4019LW (Panel LVF390CMTM E13 V5), MYSTERY MTV-3219LW (Panel LVW320CSTME18 V2), TCL 40D3200 (Panel LTA400HM13 ), TCL 39D3320 39D3320F (Panel LVF390CMTM E13 V2), TCL 39E5000F3D (Panel V390HK1-LS5), THOMSON T39ED33HU (Panel LVF390CMTME15V2), THOMSON T32ED33U (Panel LSC320AN01-C06), THOMSON T32E32U (Panel LVW320SSTT E1).
External view of the power supply
Main features of the GOLDSTAR LT-32A320R device:
Installed matrix (LED panel) LTA320AN01 or LVW320CSTT.
Matrix control uses Timing Controller (T-CON) 1CA320AP18S4LV0.1.
The LED driver SSL320_0E2B is used to power the LEDs and is controlled by the PWM controller SSL100SN. As the power elements of the LED driver, keys of the APM1101N, APM4015P types are used.
The formation of the necessary supply voltages for all nodes of the GOLDSTAR LT-32A320R TV is carried out by the 40-P081C0-PWD1XG power module, or its analogs using VIPER17L, FAN6754 microcircuits.
MainBoard - the main board (motherboard) is a 40-MS82S0-MAD2XG module, using CPU chips: MST6E182VS-LF, SPI Flash: 25Q32, EEPROM: 24C64 and others.
The F35WT-3-E tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320AN01-D
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 68%
Response Time: 20 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
GOLDSTAR LT-32A320R TV with LCD display LTA320AN01, 32 "(81 cm) diagonal 16: 9. The required brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 80000: 1 is achieved by special control of LED operation. The LED panels of this TV are equipped with edge LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats: MP3, MPEG4, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI x2, USB x2. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
The power consumed by the TV operating in mains mode is 70 W.
Dimensions: without stand 770x505x45 mm.
TV weight: without stand: 11 kg.
Attention! Panel LTA320AN01 LED-TV GOLDSTAR LT-32A320R is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.