Technical description and composition of the ERISSON 32LH01 TV, type of panel and applicable modules. The composition of the modules.ERISSON
Model: 32LH01
Chassis / Version: CV028GH_MA_V3
Panel: LTA320WT-L05
Power Supply (PSU): MLT084G3
PWM Power: DM0265R, L6384D, ML4800CS
MOSFET Power: 9N50C
MainBoard: CV028GH_MA_V3
IC MainBoard: TP2808HQN, MST5151A-LF, IS42S16400D-7TL, MSP3415G 88_V3, SAA5361HL / M1 / 1651, TPA3002D2, IS62WV2568BLL-55HLI, TVP5160
Tuner: JS-6H2 / 121
Specifications 32LH01
ERISSON 32LH01
General recommendations for repairing TV LCD
Like any other TV, ERISSON 32LH01 repair is advisable to start with an external inspection of the visible changes in the 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. 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 cases where the ERISSON 32LH01 TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink and there are no sounds and no signs of operability at all, the power module is most likely faulty or, which happens much less often, there is no processor power on the motherboard. It is advisable to start the troubleshooting of the power supply module by checking the mains fuse. If it is torn, it is necessary to check first of all the power semiconductor elements - rectifier diodes and the power switch of the converter, which are often found in a breakdown state in such situations.
The reasons for the breakdown of the power switch of the flyback converter of the power module can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or breakage of the resistors in its bundle.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If the ERISSON 32LH01 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU.
The operation of the power circuits of the inverter and the backlight in the normal mode are controlled by special protection, which is organized for fire safety, for example, to disconnect during short circuits or breaks in high-voltage connections or when the lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Owners and users of the ERISSON 32LH01 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!
One of the typical defects of the ERISSON 32LH01 TV can occur in the V315B1-L01 panel.External manifestations: color distortion in the image as a negative in the image, light tones predominate. Typically, in such cases, the AS15-G gamma corrector is faulty. Another indicator of its malfunction is an excessively strong heating, which in practice allows you to do without measuring voltage gradations of gray.
In most cases, replacing the AS15-G solves the problem.
It should be remembered that similar symptoms can cause faults in the column drivers of the panel, which is usually indicated by interference in the form of even vertical bars on the screen. Then, after replacing the AS15-G, the situation does not change. Drivers are in loops and cannot be replaced. In this case, it is necessary to replace the glass panel.
Main features of the ERISSON 32LH01 device:
The matrix (LCD panel) LTA320WT-L05 is installed.
The required supply voltages for all nodes of the TV ERISSON 32LH01 are generated by the MLT084G3 power module or its analogs using DM0265R, L6384D, ML4800CS microcircuits and 9N50C type power switches.
MainBoard - the main board (motherboard) is a CV028GH_MA_V3 module, using the TP2808HQN, MST5151A-LF, IS42S16400D-7TL, MSP3415G 88_V3, SAA5361HL / M1 / 1651, TPA3002D2, IS62WV2560BLL, other chips.
The JS-6H2 / 121 tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320WT-L05
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 44%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 2000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 12 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: ERISSON, Model: 32LH01.
Shortly from the TV: LCD, 720p HD, diagonal 32 "(81 cm).
The composition uses MainBoard CV028GH_MA_V3 and an LCD panel (matrix) LTA320WT-L05.
Power Supply Unit (PSU) MLT084G3 Power Supply.
ERISSON 32LH01 TV with LTA320WT-L05 LCD display, 32 "(81 cm) diagonal size in 16: 9 format. Screen brightness of 500 cd / m² is ensured by backlighting with CCFL (EEFL) fluorescent lamps. Contrast, as the ratio of maximum brightness to minimum, is 1200: 1. It is possible to 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 takes place in one hundred Standard 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the sound speaker system 20 W (2x10 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), RGB. 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, 1280x1024, 1360x768.
Dimensions: With stand 550x443x175 mm, Without stand 550x411x82 mm.
Attention! The LTA320WT-L05 panel of an ERISSON 32LH01 LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen surface to prevent permanent damage to the LCD panel.