Technical description and composition of the ERISSON 24LEJ03 TV, type of panel and applicable modules. The composition of the modules.ERISSON LED
Model: 24LEJ03
Chassis / Version: LA.M181.B4 // CV182L
Panel: V236H1-LE4 REV C1 // M236HGE-L1S Rev. C2
LED backlight: EDGE LED
T-CON: V236H1-LE5-X + C
LED driver (backlight): HQ-LED60-1A
PWM LED driver: HQ9002
MOSFET LED driver: B0210D
Power Supply (PSU): Adapter 12V
MainBoard: LA.M181.B4 1160
IC MainBoard: CPU: MST6E181VS-LF-Z1; SPI Flash: 25Q32BSIG; SOUND: TDA1517;
Tuner: TNF903SHR-BF-1
Specifications 24LEJ03
ERISSON 24LEJ03
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should inspect all the internal elements of the LA.M181.B4 chassis, as well as the external chassis. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
Sometimes the ERISSON 24LEJ03 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is a failure of the common power module. If it is working properly, you need to check the processor batteries on the SSB (Main Board). It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
If the ERISSON 24LEJ03 TV does not have an image, but there is sound, the malfunction should be sought in the power converter for the backlight (LED driver). 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. When disabling the protection of the LED driver (to enable diagnostics), special care must be taken due to the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
On the LA.M181.B4 1160 motherboard, in case of a malfunction, you should first check the operation of all stabilizers or power converters of the microcircuits and, if necessary, update the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: MST6E181VS-LF-Z1; SPI Flash: 25Q32BSIG; SOUND: TDA1517; It requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
Remember! Attempts to self-repair by users of the ERISSON 24LEJ03 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> ERISSON 24LEJ03, Main: LA.M181.B4 1160, Panel: V236H1-LE4 REV C1
FIRMWARE FOR SPI FLASH -----------> ERISSON 24LEJ03, Main: CV182L-C, Panel: M236HGE-L1S Rev.C2
The appearance of MainBoard LA.M181.B4 is shown in the figure below:LA.M181.B4
LA.M181.B4 can be used in TVs:
ERISSON 16LEJ02 (Panel LP156WH4 TL B1), ERISSON 19LEJ02 (Panel LM185WH2 (TL)(A1)), ERISSON 16LEJ03 (Panel LP156WD1 TL A1), ERISSON 24LEJ02 (Panel V236H1-LE2), ERISSON 22LEJ031 (Panel LM215WF4), ERISSON 24LEJ03 (Panel V236H1-LE4 REV C1), ERISSON 19LEJ03 (Panel LM185WH2 (TL)(A1)), ERISSON 22LEJ02 (Panel LTM215HT03).
Main features of the ERISSON 24LEJ03 device:
Installed matrix (LED-panel) V236H1-LE4 REV C1 or M236HGE-L1S Rev. C2.
The matrix control uses the Timing Controller (T-CON) V236H1-LE5-X.
To power the backlight LEDs, the HQ-LED60-1A LED driver is used, controlled by the HQ9002 PWM controller. As power elements of the LED driver, keys of the B0210D type are used.
To power all internal components of the ERISSON 24LEJ03 TV, an external adapter 12V type is used.
MainBoard - the main board (motherboard) is a LA.M181.B4 module, using CPU chips: MST6E181VS-LF-Z1; SPI Flash: 25Q32BSIG; SOUND: TDA1517; and others.
The TNF903SHR-BF-1 tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V236H1-LE4
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.6 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 521.28x293.22 mm
Surface: Antiglare (Haze 25%)
Brightness: 280 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 9S8P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
Technical description
ERISSON 24LEJ03 TV with V236H1-LE4 LCD, 24 "(61 cm) diagonal size of 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. The LED-panel of this TV has an end LED backlight - Edge LED.The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic layout according to the standard 1080p (Full HD). -frequency or video signal can be processed in the analog PAL, SECAM system, NTSC Image processing and generation of the digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:.. MP3, MPEG4, JPEG.
The power of the acoustic system of sound 6 W (2x3 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), AV, audio x2, component, SCART, RGB, VGA, HDMI, USB. An output for connecting headphones is provided. 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, 1920x1080.
Overall dimensions: With stand 463x360x45 mm, Without stand 580x370x44 mm.
Attention! The V236H1-LE4 REV C1 panel of the ERISSON 24LEJ03 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.