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.

How to use the site:

- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Thursday 19 March 2020

REPAIR / SERVICING TV HAIER LE43K6500TF

Technical description and composition of the HAIER LE43K6500TF TV, type of panel and applicable modules. The composition of the modules.
HAIER LED
Model: LE43K6500TF
Chassis / Version: T.MS6486.751
Panel: LC430DUY-SHA1
LED backlight: LED42D08A-ZC26AG-01, LED42D08B-ZC26AG-01
T-CON: 6870C-0532A
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): TV5006-ZC02-02
PWM Power: PWM SOT23-6
MOSFET Power: TO-220
MainBoard: T.MS6486.751
IC MainBoard: AND: MX30LF4G18AC-TI, DRAM: NT5CB256M16DP-EK, WIFI-2-M603USA1
Tuner: DVB-T, DVB-T2, DVB-C
Technical Specifications LE43K6500TF
HAIER LE43K6500TF
General repair guidelines for TV LCD LED
Possible malfunctions
- The HAIER LE43K6500TF TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
With such manifestations, a malfunction is most likely to be detected in the TV5006-ZC02-02 power supply module. It is necessary to measure its secondary output voltages, and in case of their absence, check the power switches (TO-220) and rectifier diodes in the converters for a short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM) PWM SOT23-6, if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- 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 most of these cases, a malfunction is detected in the nodes and backlight elements of the LED panel. The reason can sometimes be in the power of the LEDs, but more often in their malfunction (breakdown or break), sometimes in the violation of the contact connections of the LED strips.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the T.MS6486.751 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). Board repair and chip replacement AND: MX30LF4G18AC-TI, DRAM: NT5CB256M16DP-EK, WIFI-2-M603USA1 are made with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
In cases where there is no tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the DVB-T, DVB-T2, DVB-C tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
We recommend LE43K6500TF TV owners to be repaired only by qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!



The appearance of MainBoard T.MS6486.751 is shown in the figure below:
T.MS6486.751
The appearance of the power supply
Key Features of HAIER LE43K6500TF:
Installed matrix (LED-panel) LC430DUY-SHA1.
The matrix control uses the Timing Controller (T-CON) 6870C-0532A.
A converter is used to power the backlight LEDs, combined with the T.MS6486.751 main board.
The necessary supply voltages for all nodes of the TV HAIER LE43K6500TF are generated by the TV5006-ZC02-02 power module, or its analogs using PWM SOT23-6 microcircuits and TO-220 type power switches.
MainBoard - the main board (motherboard) is a T.MS6486.751 module, using AND: MX30LF4G18AC-TI, DRAM: NT5CB256M16DP-EK, WIFI-2-M603USA1 and others.
The tuner DVB-T, DVB-T2, DVB-C provides the reception of television programs and tuning to channels.

Brand: HAIER, Model: LE43K6500TF.
Briefly from the TV: LCD, LED backlight, 42.5 ", 1920x1080, 1080p Full HD, HDR, DVR, sound: 20W, HDMI: 3, Internet access, Wi-Fi, Smart TV.
Manufacturer: TPV ICS Russia, Shushary, St. Petersburg and Qingdao Haier Industry Zone (China).
Developer: Haier Group Corporation. Qingdao (Qingdao). China
The composition uses MainBoard T.MS6486.751 and LCD-panel LC430DUY-SHA1.
Power Supply Unit (PSU) TV5006-ZC02-02 Power Supply.
HAIER LE43K6500TF TV with LCD display LC430DUY-SHA1, diagonal size 42.5 "(108 cm) in 16: 9 format. The required brightness of the screen is 250 cd / m² LED backlight LED. Contrast, as the ratio of maximum brightness to minimum, is 1200: 1. Direct LED backlighting with Direct LEDs is realized in the LCD panel of the TV, and the TV’s design and technical features include watching broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution of 1080p (Full HD). brabotka images produced by modern technology of High Dynamic Range (HDR) with an extended range of brightness levels.
The LE43K6500TF TV has built-in SMART Software and pre-installed Linux Operating System. Connecting to the Internet can be done via Wi-Fi. Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), Xvid, DivX, MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI x3, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n. An output for connecting headphones is provided.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The power consumed by the TV working in the network mode is 78 watts.
Overall dimensions: with stand 966x619x250 mm, without stand 966x559x64 mm.
TV Weight: with stand: 7.69 kg, without stand: 7.55 kg.
Attention! The panel of the LC430DUY-SHA1 LED-TV HAIER LE43K6500TF 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.