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 !

Monday 11 March 2019

SONY KDL-40V2500 SERVICE MODE AND POWER SUPPLY CIRCUIT

SONY KDL-40V2500 SERVICE MODE AND POWER SUPPLY CIRCUIT


SONY KDL-40V2500 

SERVICE MODE AND POWER SUPPLY CIRCUIT 


SELF-DIAGNOSTIC FUNCTION
Diagnostic Test Indicators
When an error occurs, the POWER LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the fi rst of the problem areas. If the errors occur simultaneously, the one that corresponds to the fewest fl ashes is identified first. Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.

ACCESSING SERVICE ADJUSTMENTS
To adjust various set features, use the Remote Commander to put the set into service mode to display the service menus. The Remote Commander displays the service menu associated with the Digital or Analog format depending on which format is on the TV when you enter service mode.
ACCESSING THE DIGITAL SERVICE ADJUSTMENT MENUS
1. Turn the TV on and view a Digital channel.
2. Put the TV in standby mode. (Power off).
3. Press the following buttons on the Remote Commander within a second:
DISPLAY > Channel 5 > Volume + > POWER On.
The Digital service menu displays.
4. Use the > button to view the next category listing the white balance adjustment items.
5. Use the up or down button to select the item you want to adjust.
a. To increase the data value of the category, press the >  button.
b. To decrease the data value of the category, press the < button.
6. To save the data value changes, press the > button to select Color Save and then press the enter button.
a. To save the data value changes, select Save by pressing the down button and then press the  enter button.
b. To cancel the data value changes, select Cancel by pressing the up button and then pressing the enter  button.
VIEWING THE DIGITAL MODULE BOX
(Q-BOX) SERVICE ITEMS
Use the following instructions to display the Digital menu items you want to adjust.
1. Turn the TV on and view a Digital channel.
2. Put the TV in standby mode. (Power off).
3. Press the following buttons on the Remote Commander within a second:
DISPLAY > Channel 5 > Volume + > POWER On.
The Digital service menu displays.
4. To display the Digital Module (Q Box) service adjustment menus, press JUMP . The QM category displays.
5. To change the category, press 2 or 5 on the Remote Commander.
Note: Pressing 2 or 5 only changes the categories within the service menu displayed. To return to the Digital Service Menu, press the JUMP button.
6. To change the adjustment item, press 1 or 4 on the Remote Commander.
7. To change the data value, press 3 or 6 on the Remote Commander.
Note: To go back to the last saved data value, press 0 then ENTER on the Remote Commander to read the memory.
8. To write into memory, press MUTING then ENT on the Remote Commander.
9. To exit service mode, turn the power off.
WHITE BALANCE ADJUSTMENT.
The White Balance only needs to be adjusted when you replace the BU Board.
1. Through the Video 1 input, step Gray Scale with Setup.
2. Press MENU on the Remote Commander. The User Menu displays
3. Press the down  button until Settings is selected, then press the enter  button.
4. From the Picture menu, press the > button to display the picture mode options.
a. Press the down button to select Custom, then press the enter  button.
5. From the Picture menu, press the down button to select Color Temperature.
a. Press the > button to display the Color Temperature options.
b. Press the dwon button to select Cool, then press the enter button.
6. From the Picture menu, press the down button to select Advanced Settings.
7. Using the arrow keys set all the registers in the Advanced Setting menu to Off.
8. Put the TV in standby mode. (Power off).
9. Access the Service Menu by pressing the following buttons on the
Remote Commander within a second:
DISPLAY >  Channel 5 > Volume + >  POWER On.
The Digital service menu displays.
10. Press the down button to display the white balance adjustment menu items.
11. Using 10 step NTSC Gray Scale with Setup adjust the White Balance of the 60% shade with R_Drive and B_Drive.
12. Using the same pattern, adjust the white balance 20% with R_BKG and B_BKG.
13. 20IRE and 60IRE shades should have the same color.
POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 02:41
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