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 !

Friday 1 February 2019

LG 42LE5500 LEDPLUS – HOW TO ENTER THE SERVICE MODE, HOW TO UPDATE THE SOFTWARE

LEDPlus LG 42LE5500 – How to enter the service mode, how to update the software

Firmware update, EDID download procedure: LG42LE5500 LEDPlus TV
Remote Control - AKB72914003
Power board: EAY60803101
Main board: EBU60904603
Basic Troubleshooting Steps
Define Look at the symptom carefully and determine what circuits could be causing the failure. Use your senses Sight, Smell, Touch and Hearing. Look for burned parts and check for possible overheated components. Capacitors will sometimes leak dielectric material
and give off a distinct odor. Frequency of power supplies will change with the load, or listen for relay closing etc. Observation of the front Power LED may give some clues.
Localize After carefully checking the symptom and determining the circuits to be checked and after giving a thorough examination using your senses the first check should always be the DC Supply Voltages to those circuits under test. Always confirm the supplies
are not only the proper level but be sure they are noise free. If the supplies are missing check the resistance for possible short circuits.
Isolate To further isolate the failure, check for the proper waveforms with the Oscilloscope to make a final determination of the failure. Look for correct Amplitude Phasing and Timing of the signals also check for the proper Duty Cycle of the signals. Sometimes
“glitches” or “road bumps” will be an indication of an imminent failure.
Correct The final step is to correct the problem. Be careful of ESD and make sure to check the DC Supplies for proper levels. 
To access the Service Menu.
1) You must have either Service Remote. (PART NUMBER: 105-201M or  MKJ39170828)
2) Press “In-Start”
3) A Password screen appears.
4) Enter the Password.
Note: A Password is required to enter the Service Menu. Enter; 0000
Note: If 0000 does not work use 0413.
Software Updates (New and Changed Functions)
A wireless Internet Connection will work for Automatic Software Downloads., however if there are problems completing download, a Wired Internet Connection is preferred
For network setup assistance, press the green button for the Simple Manual With Software Update Highlighted, Press Select on Remote
Continue on next page
Bring up the Customer’s Menu then Press the Red button on Remote Scroll down to item 9 Network Connections.
Automatic Internet Software Update
*Off : Automatic Software update does not work
*On : if new Software released, Software download notice appears at turn on with two choices, Yes and Remind Me Later.
Check Update version
* comparison current software version and Released software version.
Additional TV Checks can be made by Scrolling down.
Picture, Sound and Network Test.
After completion of the test, a Pop up menu is displayed with pre-loaded back ground picture.
Select NO if everything is OK.
If you select Yes; Service call number, Model name, SW version and serial No. is displayed.
Note: Confirm the “Suffix” of the model number.
If the Main board is replaced, the Model and Serial number must be reinserted into memory. See Model Number D/L.
USB Automatic Software Download
Create an LG_DTV folder on the USB Flash Drive.
2) Copy new software (xxx.epk) to "LG_DTV" folder. Make sure to have correct software file.
3) With TV turned on, insert USB flash drive.
4) You can see the message “TV Software Upgrade”
5) Cursor left and highlight "START" Button and push “Enter” button using the remote control.
6) You can see the download progress Bar.
7) Do not unplug until unit has automatically restarted.
8) When download is completed, you will see “COMPLETE”.
9) The TV will be restarted automatically.
CAUTION:
Do not remove AC power or the USB Flash Drive.
Do not turn off Power, during the upgrade process.
Software Files are now available from LGTechassist.com
Manual Software Download
Prepare the Jump Drive as described in the “USB Automatic Download” section and insert it into either of the USB ports.
Bring up the Customer’s Menu and scroll to “OPTIONS”.
Press the “FAV” key 7 times to bring up the Manual Download Screen.
Highlight the Software update file and press “SELECT” to begin the download process.
Example of files found On the Jump Drive.
Downloading EDID Data Pg 1 of 2
1) Press “ADJ” key.
2) Select menu,
Either “PCM EDID D/L” or AC3 EDID D/L
3) Highlight “Start” then Press “Select” key.
4) When Writing appears
Downloading in progress.
5) Downloading Complete.
Click on the pictures to zoom in