REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Tuesday 14 April 2020

REPAIR / SERVICING TV ERISSON 40LES69

Technical description and composition of the ERISSON 40LES69 TV, panel type and applicable modules. The composition of the modules.
ERISSON LED
Model: 40LES69
Chassis / Version: 5800-A8M57A-0P20
Panel: V400HJ6-PE1 Rev. C1
LED driver (backlight): integrated into MainBoard
PWM LED driver: TPS61196
Power Supply (PSU): integrated into MainBoard
PWM Power: TEA1733P
MainBoard: 5800-A8M57A-OP20 VER00.02
IC MainBoard: Spi Flash: 25q32, 25f10
Specifications 40LES69
ERISSON 40LES69
General repair guidelines for TV LCD LED
Possible manifestations of defects
- ERISSON 40LES69 TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
First of all, in such cases, you should verify the operability of the common switching power supply (IIP) - AC / DC voltage converter of the mains voltage. All source elements in this TV model are located on the MainBoard 5800-A8M57A-OP20 main board. 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 of semiconductors in secondary circuits, the converter can usually operate abnormally in short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) TEA1733P, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously working ones.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
In some of these cases, the malfunction is caused by the lack of a backlight display. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the 5800-A8M57A-OP20 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). When repairing an MB board, you need to check its Spi Flash components: 25q32, 25f10. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
Attention TV owners! Self-repair attempts by ERISSON 40LES69 are not recommended by the manufacturer and can lead to serious negative consequences!




To reduce the backlight current in LED drivers with a TPS61196 controller, it is necessary to proportionally increase the total resistance of the resistors from terminal 10 (ISET) to the housing. The maximum current in each of the six channels (in milliamperes) for the Rset resistor (in kilo-ohms) is determined from the ratio 3992 * 1.229V / Rset. In channels connected in parallel, the currents add up.
Repair MainBoard
The appearance of the MainBoard 5800-A8M57A-OP20 is shown in the figure below:
5800-A8M57A-OP20
5800-A8M57A-OP20 can be used in TVs:
ERISSON 40LES73 (Panel V400HJ6-PE1 Full HD), ERISSON 32LES73 (Panel ST3151A05-5 (SDL320HY)), ERISSON 32LES65 (Panel RDL320HY (AD0-301)), ERISSON 39LES65 (Panel RDL390HY (T390XVN01.0 39T11-C02)), ERISSON 29LES65 (Panel SK28M31A (L)), ERISSON 32LES69 (Panel ST3151A05-5 SDL320HY (CD0-605)(02)), ERISSON 40LES69 (Panel V400HJ6-PE1 Rev.C1).
Main features of the ERISSON 40LES69 device:
Installed matrix (LED-panel) V400HJ6-PE1 Rev. C1.
To power the backlight LEDs, a converter is used, combined with the main board 5800-A8M57A-OP20, controlled by the TPS61196 PWM controller.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using TEA1733P microcircuits.
MainBoard - the main board (motherboard) is a 5800-A8M57A-OP20 module, using Spi Flash chips: 25q32, 25f10 and others.
Additional technical information about the panel:
Brand: INNOLUX
Model: V400HJ6-PE1 Rev. C2
Type: a-Si TFT-LCD, CELL
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: MVA, Normally Black, Transmissive
Active Area: 878.112x485.352 mm
Surface: Antiglare (Haze 1%)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.0% (with Polarizer)
Contrast Ratio: 5000: 1
Display Colors: 16.7M (8-bit)
Response Time: 8.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V

Trademark: ERISSON, Model: 40LES69.
Briefly from the TV: LCD, 1080p Full HD, 40 "(102 cm) diagonal, HDMI: 2, USB: 2, supports DVB-T2, backlight type: Edge LED.
The composition uses the MainBoard 5800-A8M57A-0P20 and the LCD panel (matrix) V390HJS-XCPE1. The power supply is combined with the MainBoard.
Technical description
TV ERISSON 40LES69 with LCD V390HJS-XCPE1, diagonal size 40 "(102 cm) 16: 9 format. The required brightness of the screen 230 cd / m² is provided by LED backlight LED. Contrast, as the ratio of maximum brightness to minimum, is 5000: 1. The LED-panel of this TV is equipped with end LED backlighting - Edge LED.The design and technical capabilities of the TV include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic layout according to the standard 1080p (Full HD). 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. Supported media file formats: MP3, MPEG4, MKV, JPEG .
The power of the sound system 16 W (2x8 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, component, VGA, HDMI x2, USB x2. 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.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-T2 standards.
Overall dimensions: With a support 897x597x230 mm, Without a support 910x530x87 mm.
Attention! The V390HJS-XCPE1 panel of an ERISSON 40LES69 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.
Posted By: FRANK at 07:43
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