Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

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 !

Wednesday 13 March 2019

NOBLEX 42LC816F LCD TV SERVICE MODE POWER SUPPLY CIRCUIT AND DISASSEMBLING

LCD TV

SERVICE MODE POWER SUPPLY CIRCUIT AND DISASSEMBLING

TV SERVICE MENU Quick operation is needed to enter Service Mode. TO ENTER TO SERVICE MENU DO THE FOLLOWING 1. Press and hold the MENU button on Side Controls.
2. Keep pressing the MENU button and press the MUTE button on the remote control, and the FACTORY MENU will be displayed. To adjust data: 1) Select “DATA” line by pressing ^ or v button.

2) Press ◄►button to adjust data

SERVICE MODE EXIT
Press MENU button to exit service mode.
Note: The all adjusted data in service mode will be memorized into EEPROM automatically.

INITIAL DATA SETTING
This adjustment is controlled by the CPU (IC8000) through the IIC Bus Data Line in the chassis, and those adjustment data are memorized the memory IC (IC8001). Therefore, Main board or the memory IC (IC8001) is replaced, these data will be disappeared. Readjust should be made. Initial data is provided in the CPU ROM, when the memory IC (IC8001) is replaced with new one. CPU ROM data is loaded into the memory. Initial data is provided to operating the monitor basically. For operating the monitor quality performance, further adjustment is required following chassis electrical adjustment.
1. Receive good quality signal.
2. Enter the Service Mode.
3. Confirm data value to be the same as the Service Adjustment Data Table. If it is different, change to correct data
4. Exit the Service Mode.

ADJUSTING WHITE BALANCE

Pattern
White Pattern 100% (in AV mode).
Condition
Picture Mode: STANDARD
Color Temperature: NORMAL
Aging Time: More than 10 minutes
Adjustment
1. Enter the Service Mode.
2. Select "Source ALL" by pressing ed button, and select "Properties White" by pressing 7 8 button.
3. Set R,G,B value to “FF” by pressing NUMERIC buttons.
To adjust Red : Press 1 (data value up) and 4 (data value down).
To adjust Green : Press 2 (data value up) and 5 (data value down).
To adjust Blue : Press 3 (data value up) and 6 (data value down).

4. Decide one item in three items to a fixed value (For example, let R be fixed value), select item of other 2 colors (Example, G or B), and adjust to produce a normal black and white picture in highlight areas.
(Note: At this time, Adjust the other 2 colors data less than fixed data.)
5. Exit the Service Mode.

After adjustment, confirm white balance again by normal picture.

DISASSEMBLING

1. Remove 6 screws and remove the STAND

LID BACK Removal
1. Remove 5 screws and take the LID BACK off.
Note: LID BACK can be removed even if it does not remove a stand.

ASSY, PWB, POWER Board and ASSY, PWB, MAIN Board Removal
1. Remove Power Board Holder fi rstly, then remove 6 screws and take ASSY, PWB, POWER off.
2. Remove 9 screws on the circuit board and then take ASSY, PWB, MAIN off .