Technical description and composition of the ERISSON 24LJ10 TV, type of panel and applicable modules. The composition of the modules.ERISSON
Model: 24LJ10
Chassis / Version: MST36-V1.2
Panel: V236H1-L01
MainBoard: MST36-V1.2
IC MainBoard: SPI Flash: EN25F40; EEPROM: 24C32;
Tuner: CDT-3FP2i2-01
Specifications 24LJ10
ERISSON 24LJ10
General recommendations for repairing TV LCD
Repair of the ERISSON TV with the MST36-V1.2 chassis should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
Malfunctions of the power module can be expressed in different ways, for example, ERISSON 24LJ10 does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
Power switches in pulsed power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
If there is no image when you turn on the ERISSON 24LJ10, or it appears for a second and disappears completely, but there is sound, most likely either the backlight or the power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit. All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
If the MST36-V1.2 motherboard is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement. In some cases, chip repair may be required to repair the MB (SSB) board - SPI Flash: EN25F40; EEPROM: 24C32; to new or obviously serviceable. In cases where BGA technologies are used, defects are usually localized by the heating method.
For 24LJ10 TV owners, we recommend that you contact qualified professionals with work experience for repairs! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> ERISSON 24LJ10, Main: MST36-V1.2, Panel: V236H1-L01
The appearance of the MainBoard MST36-V1.2 is shown in the figure below:MST36-V1.2
MST36-V1.2 can be used in TVs:
ERISSON 24LJ10 (Panel V236H1-L01 ), ERISSON 15LJ30 (Panel LM156WH1), ERISSON 19LJ09 (Panel LM185WH1 (TL) (E6)), IZUMI TL15H102B (Panel M156NWR1), IZUMI TL19H213B (Panel LM185WH1 (TL)(FC)).
Main features of the ERISSON 24LJ10 device:
Installed matrix (LCD panel) V236H1-L01.
The required supply voltage for all nodes of the TV ERISSON 24LJ10 provides a switching power supply.
MainBoard - the main board (motherboard) is an MST36-V1.2 module, using SPI Flash chips: EN25F40; EEPROM: 24C32; and others.
The tuner CDT-3FP2i2-01 provides the reception of television programs and tuning to channels.