Technical description and composition of the ERISSON 15LJ18 TV, type of panel and applicable modules. The composition of the modules.ERISSON
Model: 15LJ18
Chassis / Version: RC719DU-F10
Panel: HT150X02-100 // N150P5-L02
Lamp backlight: EDGE LED
Power Supply (PSU): AYP60001-T1
MainBoard: RC719DU-F10
IC MainBoard: MSP3415G, F40-100GCP, 24C32, TDA9885TS, TDA1517P
Tuner: CDT-3FP2i2-30
Specifications 15LJ18
ERISSON 15LJ18
General recommendations for repairing TV LCD
Repair of the ERISSON TV with the RC719DU-F10 chassis should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. 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.
In cases where the ERISSON 15LJ18 TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operability at all, the power module is most likely faulty or the processor is not powered motherboard (a typical defect of some ERISSON TV 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.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If there is no image when ERISSON 15LJ18 is turned on, or it appears for a second and disappears completely, but there is sound, most likely either the backlight lamps or their 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. 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.
Diagnosis and repair of the RC719DU-F10 motherboard is carried out by checking the performance of the stabilizers or power converters of the module chips. In some cases, a software update is required. Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the SPI Flash elements: 25F40; . BGA chip malfunctions are usually easy to detect by warming up.
It should be remembered! Attempts to repair the ERISSON 15LJ18 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> ERISSON 15LJ18 , Main: RC719DU-F10, Panel: HT150X02-100
The appearance of the MainBoard RC719DU-F10 is shown in the figure below:RC719DU-F10
RC719DU-F10 can be used in TVs:
DIGITAL DL-16JT89 (Panel LTN156AT01), ERISSON 22LDJ08 (Panel LM220WE1 ), ERISSON 15LJ18 (Panel HT150X02-100).
The appearance of the power supply
Main features of the ERISSON 15LJ18 device:
Installed matrix (LCD panel) HT150X02-100 or N150P5-L02.
The formation of the necessary supply voltages for all nodes of the ERISSON 15LJ18 TV is carried out by the AYP60001-T1 power module, or its analogs.
MainBoard - the main board (motherboard) is an RC719DU-F10 module, using microchips MSP3415G, F40-100GCP, 24C32, TDA9885TS, TDA1517P and others.
The tuner CDT-3FP2i2-30 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: BOE
Model: HT150X02-100
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.0 inch
Resolution: 1024x768, XGA
Display Mode: TN, Normally White, Transmissive
Active Area: 304.128x228.096 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 500: 1
Display Colors: 16.2M (6-bit + FRC), CIE1931 60%
Response Time: 2/6 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 20 pins
Voltage: 3.3V
Brand: ERISSON, Model: 15LJ18.
Briefly from the TV: LCD, 720p HD, diagonal 15 "(38 cm).
The composition uses MainBoard RC719DU-F10 and an LCD panel (matrix) HT150X02-100, or N150P5-L02.
Power Supply Unit (PSU) AYP60001-T1 Power Supply.
ERISSON 15LJ18 TV with HT150X02-100 LCD, 15 "(38 cm) diagonal size 16: 9 format. 500 cd / m² screen brightness is backlit by CCFL (EEFL) fluorescent lamps. HD images can be viewed in high quality with resolution 1024x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p.
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. 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.
Overall dimensions: With a support of 586x446x205 mm, Without a support of 586x377x74 mm.
Attention! The HT150X02-100 panel of an ERISSON 15LJ18 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!
