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.

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 !

Wednesday, 30 January 2019

HOW TO REMOVE THE POWER BOARD, SWITCH UNIT, BEZEL, SELF CHECK FUNCTION, ERROR DISPLAY - SONY KDL40R450A, KDL46R450A LCD TV

How to remove the power board, switch unit, Bezel, Self check function, Error display - Sony KDL40R450A, KDL46R450A LCD TV

REPLACING THE POWER SUPPLY BOARD
Remove the screws and detach brackets.
Remove 5 screws from the Power Supply Board.
Disconnect the Power Cord from the Power Supply Board
Disconnect all the connectors to detach from the Rear Cover.
Confrm if the latest version of the Software is installed and if not, you must update it.
REMOVING THE SWITCH UNIT
Disconnect FFC cable from Switch Unit.
Insert finger on the free space on the left side pocket where Switch Unit is located and pull to detach from Rear Cover.
REMOVING THE BEZEL
Remove the screws and detach the Power Cord.
Disconnect connectors from the TCON and H Board.
Remove the harness assembly carefully.
Gently lift up the cover and dettach from LCD Panel.
Flip the TV face up and press the gap between the LCD Panel and Bezel.
Gently lift up and unhook the Bezel to detach.
DIAGNOSING THE ERROR
Before servicing the Television:
1. Verify the TV has the symptom the customer indicated.
2. Check to see if the latest Software is installed.
a. If not, install the latest version.
3. Determine the replacement part required.
VIEWING THE SELF CHECK DIAGNOSIS HISTORY
When an error is detected, the Self Check screen records the number of times the error occurred. This is helpful in confirming past occurrences of an error and for determining if an error is intermittent when the customer is
not sure what is causing the television to shut down. If the screen displays
a “0”, no error has occurred.
1. Press the “Power to” turn on the TV and then turn it off again.
2. Press the following buttons on the Remote Commander within 1second of each other:
"Display > Channel-5 > Volume(--ve) > Power"
This differs from accessing Service Adjustments Mode (Volume +).
Use this general Triage Chart to determine what may possibly be causing the error before going out to the customers location.
1. Confirm the symptom from the customer. RED Dot: (Primary) Most likely defective part.
2. Select that symptom from the chart. BLUE Triangle: (Secondary) Possible defective part.
3. Bring the primary component listed for that symptom.
4. Follow the associated flowcharts in the Training Manual to isolate the board.
5. Chart Color Code.
To access the most recent version of the Triage documents for the models listed in this manual, login into the Sony Authorized Service Portal.
Click on the pictures to magnify
Posted By: FRANK at 15:00
TAG: ,