Technical description and composition of the ERISSON 65ULEA99T2SM TV, panel type and modules used. The composition of the modules.ERISSON LED
Model: 65ULEA99T2SM
Chassis / Version: MSD6586-T8E2
Panel: K650WD7
LED backlight: 4708-K65WD8-A1213K01 K650WD A1
T-CON: 6870C-0689A
LED driver (backlight): integrated into PSU
PWM LED driver: FA5696
Power Supply (PSU): K-PL-FH1 4702-2PLFH1-A4231B01
PWM Power: PFC, PWM
MOSFET Power: TO-220
MainBoard: MSD6586-T8E2
IC MainBoard: CPU, eMMC, DRAM, AUDIO, DC / DC
Tuner: CDT-9NT372-62
Control: Wi-Fi: BL-R8188NU3 V0.1, IR: 4713-65L73F-A1123K01
Specifications 65ULEA99T2SM
ERISSON 65ULEA99T2SM
General recommendations for TV LCD LED repair
Possible manifestations of defects
- ERISSON 65ULEA99T2SM does not turn on and does not show any signs of operability at all. Does not blink indicators and does not respond to control buttons.
With such manifestations, a malfunction is most likely found in the K-PL-FH1 power module. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches (TO-220) and rectifier diodes for possible partial or complete breakdown.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency mode of a short circuit, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or the current sensor in the source of the key often breaks off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers PFC, PWM, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or known to be working properly.
- There is no image, there is sound, it reacts to the remote control, the channels are switched. In some cases, the image appears when turned on and disappears immediately.
Usually, in such cases, there is no backlighting of the LED panel (matrix). The reason may be in the breakage of the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the strings connectors,
When trying to detect a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is required to open PN junctions connected in series.
- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the MSD6586-T8E2 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). If it is not possible to replace the MB (SSB) board, you need to check the serviceability of its elements - CPU, eMMC, DRAM, AUDIO, DC / DC. Defective components must be replaced.
Before changing the CDT-9NT372-62 tuner, if it is not possible to tune to TV channels, you should make sure that there are supply voltages, which must be measured at the corresponding tuner terminals and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be monitored with an oscilloscope
Attention! Users and owners of 65ULEA99T2SM TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from trying to repair themselves in order to avoid negative consequences that can lead to the complete non-repairability of the device.
Additional MainBoard RepairThe appearance of the MainBoard MSD6586-T8E2 is shown in the figure below:
MSD6586-T8E2
Main features of the ERISSON 65ULEA99T2SM device:
Installed matrix (LED panel) K650WD7.
Matrix control uses a Timing Controller (T-CON) 6870C-0689A.
A converter combined with a power supply is used to power the backlight LEDs, it is controlled by the FA5696 PWM controller.
The formation of the necessary supply voltages for all nodes of the ERISSON 65ULEA99T2SM TV is carried out by the K-PL-FH1 power module, or its analogs using PFC, PWM microcircuits and power switches of the TO-220 type.
MainBoard - the main board (motherboard) is an MSD6586-T8E2 module, using CPU, eMMC, DRAM, AUDIO, DC / DC chips and others.
The CDT-9NT372-62 tuner provides reception of television programs and tuning to channels.
ERISSON 65ULEA99T2 Smart LCD TV, diagonal 64.5 "(164 cm) in 16: 9 format. The required brightness of the screen of 320 cd / m2 is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 4000: 1. This TV model is equipped with LED backlight technology and can watch movies in the highest UHD quality at 3840x2160 resolution in 4K UHD standard.
65ULEA99T2 Smart TV has built-in SMART software and pre-installed Android Operating System. Internet connection can be made via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. Uses NICAM stereo processing system and Sound Surround function.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), component, VGA, HDMI x3, USB x3, Ethernet (RJ-45), Wi-Fi. A headphone output is provided.
The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Attention! The panel of ERISSON 65ULEA99T2 Smart LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.