Technical description and composition of the ERISSON 42LEB15 TV, type of panel and applicable modules. The composition of the modules.ERISSON LED
Model: 42LEB15
Chassis / Version: T.VST59.A1
Panel: T420HW08 V.5 FHD
Power Supply (PSU): LKP-SP020
MainBoard: T.VST59.A1
IC MainBoard: CPU: TSUMV59XE-Z1; SPI Flash: 25Q32;
Specifications 42LEB15
ERISSON 42LEB15
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The ERISSON 42LEB15 TV does not turn on, does not respond to the remote control and the control panel buttons, does not blink with any indicators.
In the vast majority of such cases, a malfunction is detected in the LKP-SP020 power module. It is then necessary to measure its output voltages and, if they are absent, it is necessary to check the power switches and rectifier diodes of the converters for a short circuit probability.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
Often in such cases, there is no LED backlight. The reason can be both in the power of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the T.VST59.A1 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: TSUMV59XE-Z1; SPI Flash: 25Q32; It requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
Attention to users! Self-repair of the ERISSON 42LEB15 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> ERISSON 42LEB15, Main: T.VST59.A1, Panel: T420HW08 V.5 FHD
The appearance of MainBoard T.VST59.A1 is shown in the figure below:T.VST59.A1
T.VST59.A1 can be used on TVs:
AKAI LEA-32M19P (Panel MT3151A05-2), ERISSON 32LEB15 (Panel MT3151A05-2 V2.1 ), ERISSON 42LEB15 (Panel T420HW08 V.5 FHD).
Main features of the ERISSON 42LEB15 device:
Installed matrix (LED panel) T420HW08 V.5 FHD.
The formation of the necessary supply voltages for all nodes of the ERISSON 42LEB15 TV is carried out by the power module LKP-SP020, or its analogues.
MainBoard - the main board (motherboard) is a T.VST59.A1 module, using CPU chips: TSUMV59XE-Z1; SPI Flash: 25Q32; and others.
Additional technical information about the panel:
Brand: AUO
Model: T420HW08 V5
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA3, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
Trademark: ERISSON, Model: 42LEB15.
Briefly from the TV: LCD, 1080p Full HD, diagonal 42 "(107 cm), HDMI: 3, USB, backlight type: Edge LED.
The composition uses MainBoard T.VST59.A1 and an LCD panel (matrix) T420HW08 V.5 FHD.
Power Supply Unit (PSU) LKP-SP020 Power Supply.
TV ERISSON 42LEB15 with LCD T420HW08, diagonal size 42 "(107 cm) 16: 9 format. The required brightness of the screen 360 cd / m² is provided by LED backlight LED. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. The LED panel of this TV uses end LED backlighting - Edge LED.The TV’s design and technical features include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution of 1080p (Full HD) standard. frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Stereo sound is realized by two built-in speakers. NICAM STEREO audio processing system is used .
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, component, VGA, HDMI x3, USB. 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, 1280x1024, 1360x768.
The power consumed by the TV in the operating mode from the network is 140 watts.
Overall dimensions: With stand 373x270x120 mm, Without stand 524x340x44 mm.
Attention! The T420HW08 V.5 FHD LED TV panel ERISSON 42LEB15 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.
