Technical description and composition of the ERISSON 32LEB15 TV, panel type and applicable modules. The composition of the modules.ERISSON LED
Model: 32LEB15
Chassis / Version: T.VST59.A1
Panel: MT3151A05-2 V2.1
MainBoard: T.VST59.A1
IC MainBoard: CPU: TSUMV59XE-Z1; SPI Flash: W25Q32; SOUND: TPA3124D2;
Specifications 32LEB15
ERISSON 32LEB15
General repair guidelines for TV LCD LED
Any repair usually begins with an external inspection. Many visible changes in the state of the elements make it possible to determine the future 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.
In cases when the ERISSON 32LEB15 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 there is no processor power on motherboard (a typical defect of some ERISSON TV models). When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If there is no image when ERISSON 32LEB15 is turned on, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the MT3151A05-2 V2.1 panel, or in the power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
To check the health of the LEDs, as well as contact connections in the ruler circuit, the panel must be disassembled.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
In cases of attempts to repair the motherboard T.VST59.A1, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its CPU chips: TSUMV59XE-Z1; SPI Flash: W25Q32; SOUND: TPA3124D2; and other possible malfunctioning components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
FIRMWARE FOR SPI FLASH -----------> ERISSON 32LEB15 , Main: T.VST59.A1, Panel: MT3151A05-2 V2.1
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 32LEB15 device:
Installed matrix (LED-panel) MT3151A05-2 V2.1.
The required supply voltage for all nodes of the TV ERISSON 32LEB15 provides a switching power supply.
MainBoard - the main board (motherboard) is a T.VST59.A1 module, using CPU chips: TSUMV59XE-Z1; SPI Flash: W25Q32; SOUND: TPA3124D2; and others.
Additional technical information about the panel:
Brand: CSOT
Model: MT3151A05-2
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: HVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 62%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Trademark: ERISSON, Model: 32LEB15.
Shortly from the TV: LCD, 720p HD, 32 "(81 cm) diagonal, HDMI: 2, USB, backlight type: Edge LED.
The composition uses MainBoard T.VST59.A1 and an LCD panel (matrix) MT3151A05-2 V2.1.
ERISSON 32LEB15 TV with MT3151A05-2 LCD, 32 "(81 cm) diagonal size of 16: 9 format. The required brightness of the screen is 400 cd / m² LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1200: 1. Edge LED backlighting is realized in the LED-panel of this TV - Edge LED. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in an analog system ah PAL, SECAM, NTSC. Graphic processing and formation takes place in the digital signal standards 480i, 480p, 576i, 576p, 720p, 1080i. Stereo realized by two built-in speakers. Used NICAM STEREO audio processing system.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, component, VGA, HDMI x2, 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, 1360x768.
The power consumed by the TV in the operating mode from the network is 75 watts.
Overall dimensions: With stand 373x270x120 mm, Without stand 524x340x44 mm.
Attention! The MT3151A05-2 V2.1 panel of the ERISSON 32LEB15 LED TV 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.