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........ . . . . . .....
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Tuesday 14 April 2020

REPAIR / SERVICING TV ERISSON 39LES66

Technical description and composition of the ERISSON 39LES66 TV, panel type and applicable modules. The composition of the modules.
ERISSON LED
Model: 39LES66
Chassis / Version: 5800-A8M480-0P10
Panel: CX275DLEDM
MainBoard: 5800-A8M480-0P10
IC MainBoard: SPI Flash: W25Q32;
Tuner: ET-9Z2E-CF106H
Specifications 39LES66
ERISSON 39LES66
General repair guidelines for TV LCD LED
Repair of the ERISSON 39LES66 TV should begin with a careful external examination of all its components and modules. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
Sometimes the ERISSON 39LES66 TV just doesn’t turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is a failure of the common power module. If it is working properly, you need to check the processor batteries on the SSB (Main Board). It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If, when you turn on the TV, the image appears and immediately disappears, or is missing initially when you turn on, but the sound has other functions that work, there is a high probability of a malfunction of the LED driver (power converter for the backlight LEDs of the CX275DLEDM panel). In such cases, the general power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
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 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.
If the motherboard 5800-A8M480-0P10 is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Check or replace SPI Flash elements: W25Q32; 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 be diagnosed by warming up.
Before changing the tuner ET-9Z2E-CF106H, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured on the corresponding terminals of the tuner.
Owners of 39LES66 TVs are recommended to contact qualified specialists with experience for repairs! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!


FIRMWARE FOR SPI FLASH  ----------->   ERISSON 39LES66 , Main: 5800-A8M480-0P10, Panel: CX275DLEDM


 The appearance of the MainBoard 5800-A8M480-0P10 is shown in the figure below:
5800-A8M480-0P10
5800-A8M480-0P10 can be used in TVs:
AIWA 47LE61103 (Panel LC470EUN (SE)(F1)), AIWA 42LE6110 (Panel LC420EUN (SE)(M1)), AIWA 39LE6110 (Panel V390HJ1-P01), ERISSON 42LES66 (Panel LC420EUN SEM1), ERISSON 39LES66 (Panel CX275DLEDM), ERISSON 32LES66 (Panel REL320AH-U100 Rev.00), SUPRA STV-LC39660FL (Panel V390HJ1 rev.c1 SEL390V7-S00D ), SUPRA STV-LC32663FL (Panel T320HVN01.2), SUPRA STV-LC39663FL (Panel V390HJ1-P01), SUPRA STV-LC47660FL00 (Panel LC470EUN).
Main features of the ERISSON 39LES66 device:
Installed matrix (LED-panel) CX275DLEDM.
The required supply voltage for all nodes of the TV ERISSON 39LES66 provides a switching power supply.
MainBoard - the main board (motherboard) is a 5800-A8M480-0P10 module, using SPI Flash chips: W25Q32; and others.
The ET-9Z2E-CF106H tuner provides television reception and channel tuning.


 Trademark: ERISSON, Model: 39LES66.
Briefly from the TV: LCD, 1080p Full HD, diagonal 39 "(99 cm), has HDMI, has USB, backlight type: Edge LED.
The composition uses the MainBoard 5800-A8M480-0P10 and the LCD panel (matrix) CX275DLEDM.
Technical description
ERISSON 39LES66 TV with CX275DLEDM LCD, 39 "(99 cm) diagonal size in 16: 9 format. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. The LED panel of this TV has LED backlighting - Edge LED: The design and technical capabilities of the TV provide viewing of broadcasts and films in high quality HD with a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic Digital signal processing and generation takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, DivX, 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 x2, audio x3, component, SCART, VGA, HDMI, 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, 1280x1024, 1360x768.
Overall dimensions: With stand 373x270x120 mm, Without stand 470x315x47 mm.
Attention! The CX275DLEDM panel of an ERISSON 39LES66 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.