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!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Thursday 31 January 2019

SONY KDL 22L4000 LCD DIGITAL COLOR TELEVISION – CZ1R CHASSIS - HOW TO ENTER THE SERVICE MODE – SMPS SCHEMATIC

Sony KDL 22L4000 LCD DIGITAL COLOR TELEVISION – CZ1R CHASSIS - How to enter the service mode – SMPS schematic

Sony KDL-22L4000 – RM YD025 - US
Sony KDL-22L4000 – RM YD025 - CANADA
Sony KDL-22L4000 – RM YD025 - MEXICO
Sony KDL-22L4000 RM-YD025 LATIN AMERICA
CLEANING THE LCD PANEL
CAUTION: When cleaning the TV, be sure to unplug the power cord to avoid any chance of electric shock.
Clean the cabinet of the TV with a dry soft cloth.
Wipe the LCD screen gently with a soft cloth.
 Stubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water.
 If using a chemically pretreated cloth, please follow the instruction provided on the package.
 Never use strong solvents such as a thinner, alcohol or benzine for cleaning.
 Periodic vacuuming of the ventilation openings is recommended to ensure to proper ventilation.
 
ACCESSING SERVICE (FACTORY) MODE
Use the remote commander to access Service (Factory) mode after completing a repair to the TV set.
1. TV must be in standby mode. (Power on) mode.
2. To display the service menu, quickly press the following buttons on the Remote Commander
REVIEWING SERVICE (FACTORY) MODE
All of the necessary adjustment are contained in the boards for these models, therefore the following information is for informational purposes.
RESETTING TO FACTORY DEFAULTS AFTER BOARD REPLACEMENT
Traditional Service Mode is not available in this chassis; however, after replacing a board you should reset all of the settings to the Factory Default from Service (Factory) Mode.
CAUTION: Resetting the TV to the Factory Defaults will over-write all customer settings including Parental Lock settiings. 
1. TV must be in Service (Factory) Mode.
2. Press the DN button to select Factory Reset.
3. Press the Enter button to select Yes.
4. When the Reset is complete, the text changes to No.
5. To exit “service mode”, press the Menu button.
Self diagnostic function
The units DO NOT contain a self-diagnostic function. If an error occurs, the TV will not stay on.  If a repair is required for these sets, the technician should bring both the A Board and the G Board to the customer location.
(Part numbers of boards are given below) 
VIEWING MODEL INFORMATION
Use the Setup settings menu to display information about the TV.
1. TV must be On.
2. Press the Menu button to display the User Menus.
3. Press [+] until the Settings icon is selected, and then press the OK button.
4. Press [+] until Product Information is selected, and then press the OK button.
5. To exit, press the Menu button.
Power board schematic
PWB - component and conductor side
Board part numbers (Sony) 
A board:  1-857-229-11
G board:  1-857-230-11
H board:  1-857-233-11
Click on the pictures to magnify
Posted By: FRANK at 15:00
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