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!

©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 !

Saturday, 16 March 2019

LG 47LM671Y _ 47LM6700 _ 47LM6710 - LED LCD TV - REPAIR TIPS_ERRORS

LG 47LM671Y _ 47LM6700 _ 47LM6710 - LED LCD TV - REPAIR TIPS_ERRORS

REPAIR TIPS
Vertical / Horizontal bar, Residual Image, Light spot.
As the part connecting to the external input, check the screen condition by signal.
VIDEO ERROR - VIDEO LAG/STOP. Tuner checking part.
Checking method:
  • Check the signal strength or check whether the screen is normal when the external device is connected.
  • After measuring each voltage from power supply, finally replace the MAIN BOARD.
CLICK ON PICTURES TO ZOOM. Click ß at the top of the browser, to come back.
COLOR ERROR
You can view 6 types of patterns using the ADJ Key
Checking item:
  • Defective pixel
  • Residual image
  • MODULE error (ADD-BAR, SCAN BAR.)
Video error (Classification of MODULE or Main-B/D.
POWER ERROR
No Power
Check power input voltage and ST-BY 5V [For ’10 models, thereis no voltage out for st-by purpose. When st-by, only 3.5V is normally on.]
Check the DC 20V/24V, 12V, 3.5V.
Checking method when power is ON
Check “power on” pin is high.

Power error _Off when on, off while viewing. (POWER OFF MODE checking method)
FOR ALL MODELS 
Entry method
Press the IN-START button of the remote controller for adjustment
Check the entry into adjustment item 3.
Audio error. No audio/Normal video
Checking method in menu when there is no audio.
Press the MENU button on the remote controller
Select the AUDIO function of the Menu
Select TV Speaker from Off to On.
Voltage and speaker checking method when there is no audio
  1. Check the contact condition of or24V connector of Main Board
  2. Measure the 24V input voltage supplied from Power Board. (If there is no input voltage, remove and check the connector)
  3. Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal, the speaker is normal.
Remote controller operation checking method.
Checking order
  1. Check IR cable condition between IR & Main board.
  2. Check the STBY 3.3V on the terminal 6.
  3. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog Tester needle moves slowly, and defective when it does not move at all.
Sequence of the Vcom adjustment.
1. Case
LCD module chang 
T-Con board change. 
2. Equipment
Service Remote controller
Adjust sequence
  • Press the ‘adj’ key
  • Select V-COM
  • As pushing the right or the left button on the remote controller, And find the V-COM value Which is no or minimized the Flicker. (If there is no flicker at default value, Press the exit key and finish the VCOM adjustment.)
  • Push the OK key to store the value. Then the message “Saving OK” is pop.
  • Press the exit key to finish V-COM adjustment.
Posted By: FRANK at 05:20
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