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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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, 7 February 2019

LG 47LB5610 - LG47LB 5610-CD - TROUBLESHOOTING

LG 47LB5610 - LG47LB 5610-CD - Troubleshooting

LG 47LB5610 - LG47LB 5610-CD - North/Latin America, Europe/Africa, Asia/Oceania
Troubleshooting -  No power, No audio - Normal video, Remote controller key error, Audio Amplifier Circuit diagram
No power
ST-BY condition: Red
Front LED control: Menu => Option => Standby Light => On/Off
Power error No power
Check power input voltage and ST-BY 5V
Checking method when power is ON
Off when on, off while viewing
You should have the “LG Adjust Remote Control” to proceed.  The ‘In-Start’ button is not present at the user remote control.  The adjust remote control can be bought from the authorized service center for LG.
Press the "IN-START" button of the remote controller for adjustment.
Check the entry into adjustment item 3
Adjust (Service) remote control 
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 Check.
No audio/Normal video
Voltage and speaker checking method when there is no audio
Check the contact condition of or 24V connector of Main Board
Measure the 24V input voltage supplied from Power Board (If there is no input voltage, remove and check the connector)
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.
Power Amplifier section circuit diagram
No response in remote controller, key error
Remote controller operation checking method
Check IR cable condition between IR & Main board.
Check the st-by 3.3V on the terminal 4.
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.
Click on the pictures to zoom in
Posted By: FRANK at 04:10
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