Technical description and composition of the ERISSON 40LH01 TV, type of panel and applicable modules. The composition of the modules.
ERISSON
Model: 40LH01
Chassis / Version: CV028GH
Panel: LTA400WS-L03
Lamp backlight: 20 Lamp CCFL
Inverter (backlight): 24V40W2S (HIP0212A)
PWM Inverter: DMB8110D
MOSFET Inverter: SI4942
Power Supply (PSU): MLT090B (P079)
MainBoard: CV028GH_MA_V3
IC MainBoard: TP2808HQN, IS42S16400D-7TL, MSP3415G 88_V3, MST5151A-LF, SAA5361HL / M1, TPA3002D2, IS62WV2568BLL-55HL
Tuner: JS-6H2 / 121
Specifications 40LH01
ERISSON 40LH01
General recommendations for repairing TV LCD
Possible malfunctions
- ERISSON 40LH01 does not turn on, does not respond to buttons and remote control, indicators on the front panel do not light and do not blink.
With such manifestations, in some cases, the MLT090B power module is faulty. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches of the converters and rectifier diodes for the probability of short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
These manifestations can be triggered by a power module, or by defects in the inverter, as well as a distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the CV028GH_MA_V3 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its chips TP2808HQN, MST5151A-LF, IS42S16400D-7TL, MSP3415G 88_V3, SAA5361HL / M1, TPA3002D2, IS62WV2568BLL-55H6051 and other TVP components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If a JS-6H2 / 121 tuner is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary levels of supply voltages and data exchange pulses with the processor via the I2C bus at the corresponding outputs of the tuner.
Attention TV owners! Self-repair attempts by ERISSON 40LH01 are not recommended by the manufacturer and can lead to serious negative consequences!
Main features of the ERISSON 40LH01 device:Installed matrix (LCD-panel) LTA400WS-L03.
To power the backlight, an inverter 24V40W2S is used, it is controlled by the PWM controller DMB8110D. As power elements of the inverter, keys of the type SI4942 are used.
The formation of the necessary supply voltages for all nodes of the TV ERISSON 40LH01 is carried out by the power module MLT090B, or its analogues.
MainBoard - the main board (motherboard) is a CV028GH_MA_V3 module, using TP2808HQN, IS42S16400D-7TL, MSP3415G 88_V3, MST5151A-LF, SAA5361HL / M1, TPA3002D2, IS62WV2568BLL-55H microcircuits.
The JS-6H2 / 121 tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA400WS-L03
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 885.168x497.664 mm
Surface: Antiglare (Haze 40%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 10/6 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 20 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: ERISSON, Model: 40LH01.
Shortly from the TV: LCD, diagonal 40 "(102 cm), there is a PIP.
The composition uses MainBoard CV028GH_MA_V3 and LCD-panel LTA400WS-L03.
Power Supply Unit (PSU) MLT090B (P079) Power Supply.
TV ERISSON 40LH01 with LCD display LTA400WS-L03, diagonal size 40 "(102 cm) 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. The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in the standards 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, 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, 1280x1024, 1360x768.
Dimensions: With stand 550x443x175 mm, Without stand 550x411x82 mm.
Attention! The LTA400WS-L03 panel of an ERISSON 40LH01 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!
