Technical description and composition of the ERISSON 16LEJ02 TV, type of panel and applicable modules. The composition of the modules.ERISSON LED
Model: 16LEJ02
Chassis / Version: LA.M181.B4
Panel: LP156WH4 TL B1
Power Supply (PSU): Adapter 12v
MainBoard: LA.M181.B4 1160
IC MainBoard: CPU: M5TGM181VS, FLASH: 25Q32, FR9886, TD1583
Tuner: TNF903SHR-BF-1
Specifications 16LEJ02
ERISSON 16LEJ02
General repair guidelines for TV LCD LED
It is advisable to start the repair of the ERISSON 16LEJ02 TV with a careful external examination of both internal and external elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. 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.
If the 16LEJ02 TV does not turn on, does not make any sounds when 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.
Power switches in switching 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 the ERISSON 16LEJ02 TV does not have an image, but there is sound, a malfunction in the LED backlight circuits of the LP156WH4 TL B1 panel is likely. 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.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Repair of the board and replacement of the FR9886 dc dc12v-ADJ TD1583 dc dc 5v microcircuit are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Attention to the owners! Attempts to repair the TV ERISSON 16LEJ02 on its own are not recommended by the manufacturer and can lead to serious negative consequences!
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 16LEJ02 device:
Installed matrix (LED panel) LP156WH4 TL B1.
To power all internal nodes of the ERISSON 16LEJ02 TV, an external adapter 12v type source is used.
MainBoard - the main board (motherboard) is a LA.M181.B4 module, using CPU chips: M5TGM181VS, FLASH: 25Q32, FR9886, TD1583 and others.
The TNF903SHR-BF-1 tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LP156WH4-TLB1 61 Compatible model
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 344.232x193.536 mm
Shape Style: Wedge (PCBA Bent, Depth? 5.2mm)
Surface: Antiglare
Brightness: 220 cd / m²
Contrast Ratio: 400: 1
Display Colors: 262K (6-bit), CIE1931 60%
Response Time: 16 (Tr + Td)
Frequency: 60Hz
Lamp Type: 4 strings WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 6-bit), 40 pins
Voltage: 3.3V
Technical description
ERISSON 16LEJ02 TV with LP156WH4 LCD display, 16 "(41 cm) diagonal size in 16: 9 format. The LED panel of this TV has LED backlighting - Edge LED. You can view images in high quality HD at a resolution of 1024x768 pixels in 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 standards 480i, 480p, 576i, 576p, 720p.
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), component, SCART, VGA, USB. 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 stand 769x536x196 mm, Without stand 442x279x46 mm.
Attention! The panel of the LP156WH4 TL B1 LED-TV ERISSON 16LEJ02 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.