Technical description and composition of the ERISSON 24LEN60 TV, panel type and applicable modules. The composition of the modules.ERISSON LED
Model: 24LEN60
Chassis / Version: T.MS18VG.62B 11505
Panel: LM230WF5
MainBoard: T.MS18VG.62B 11505
IC MainBoard: Flash 25Q32
Tuner: CDT-35P5I2-36
Appearance
ERISSON 24LEN60
General repair guidelines for TV LCD LED
Any repair usually begins with an external inspection. From the visible external changes in the state of the components, it is often possible to determine the further direction of the troubleshooting before making the necessary measurements. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
If the 24LEN60 TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the stabilizer or power converter of the control processor may be faulty, which is typical for some ERISSON models. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is cut off in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but the sound is there and other functions work, there is a high probability of a malfunction of the LED driver (power converter for the backlight LEDs of the LM230WF5 panel). In such cases, the general power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
A break in the line of LEDs connected in series cannot be detected with a multimeter or tester without disassembling the panel. To open all the transitions, several tens of volts are needed, and it is best to use a current source for such purposes.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - Flash 25Q32 with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
If the TV works normally with external devices, but does not tune into television channels, the CDT-35P5I2-36 tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals.
Once again, remind users! Attempts to repair the TV ERISSON 24LEN60 on its own without the appropriate qualifications and experience can lead to its complete unrepairability!
FIRMWARE FOR SPI FLASH -----------> ERISSON 24LEN60, Main: T.MS18VG.62B 11505, Panel: LM230WF5
The appearance of MainBoard T.MS18VG.62B is shown in the figure below:T.MS18VG.62B
T.MS18VG.62B can be used in TVs:
BBK LEM2483F (Panel LG LC 230EUE(TD)(A1)), BBK LEM1983 (Panel LM185WH2 (TL)(A1)), DNS M24AM2 (Panel M236HGE-P02), DNS E16A90 (Panel LP156WH4 (TL)(A1)), ERISSON 23LEN60 (Panel LM230WF5), ERISSON 22LEN60 (Panel LS215AFTNO), ERISSON 24LEN60 (Panel LM230WF5 ), ERISSON 15LEN60 (Panel B156XW02 V.2), IZUMI TLE22F750B (Panel M215HGE-L10), RUBIN RB-19S2U (Panel V185B1-PE1 A01 REV 1.0), SUPRA STV-LC18250FL (Panel B173RW01 V.3).
Main features of the ERISSON 24LEN60 device:
The matrix (LED panel) LM230WF5 is installed.
The required supply voltage for all nodes of the TV ERISSON 24LEN60 provides a switching power supply.
MainBoard - the main board (motherboard) is a module T.MS18VG.62B, using Flash 25Q32 chips and others.
The tuner CDT-35P5I2-36 provides the reception of television programs and tuning to channels.