Technical description and composition of the ERISSON 15LJ19 TV, type of panel and applicable modules. The composition of the modules.ERISSON
Model: 15LJ19
Chassis / Version: MST36-V1.2-11
Panel: 15 inch
MainBoard: LM156WH1-TLE1 PANEL
IC MainBoard: W25X40B, 24c32, TDA1517P
Tuner: CDT-3FP212-01
Specifications 15LJ19
ERISSON 15LJ19
General recommendations for repairing TV LCD
Repair of the ERISSON 15LJ19 TV is better to begin with a thorough external inspection and troubleshooting. It is advisable to carefully examine the internal and external components. Sometimes, only by some signs can we determine the further direction of the localization of the malfunction. 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.
Malfunctions of the power module can be expressed in different ways, for example, ERISSON 15LJ19 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. In this case, first of all, it is necessary to check the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller that can only be checked by replacement, as well as others semiconductor elements (diodes, transistors, zener diodes).
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
If the ERISSON 15LJ19 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors.
Repairing the inverter is difficult because in case of any malfunction or emergency, even with uneven wear of the lamps, a protection is triggered, which turns it off for fire safety. Diagnostics become impossible and protection needs to be disabled.
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 motherboard LM156WH1-TLE1 PANEL1 is faulty, first of all it is necessary to check all the linear power regulators of its chips and, if necessary, update the software. Sometimes you can check the health of MB only by replacement. In some cases, to repair the MB board (SSB), it requires the replacement of chips - W25X40B, 24s32, TDA1517P with new or obviously working ones.
Attention to the owners! Attempts at self-repair of the ERISSON 15LJ19 TV are not recommended by the manufacturer and can lead to serious negative consequences !!!
Main features of the ERISSON 15LJ19 device:
Installed matrix (LCD-panel) 15 inches.
The required supply voltage for all nodes of the TV ERISSON 15LJ19 provides a switching power supply.
MainBoard - the main board (motherboard) is an LM156WH1-TLE1 module, using W25X40B, 24s32, TDA1517P, and others.
The tuner CDT-3FP212-01 provides the reception of television programs and tuning to channels.
Trademark: ERISSON, Model: 15LJ19.
Briefly from the TV: LCD, diagonal 15 "(38 cm).
The composition uses MainBoard LM156WH1-TLE1 PANEL and a 15-inch LCD panel (matrix).
ERISSON 15LJ19 TV with 15 "LCD diagonal 15" (38 cm) 16: 9 format. Screen brightness of 500 cd / m² is ensured by backlighting with CCFL (EEFL) fluorescent lamps. The input high-frequency or video signal can be processed in analog PAL systems , SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 576i.
The power of the sound system 4 W (2x2 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, S-Video, 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.
Overall dimensions: With a support of 605x465x210 mm, Without a support of 605x405x93 mm.
Attention! The 15-inch panel of the ERISSON 15LJ19 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!