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 !

Tuesday, 12 March 2019

SAMSUNG CS21Z30MLMXXST SERVICE MODE AND POWER SUPPLY CIRCUIT

SAMSUNG CS21Z30MLMXXST SERVICE MODE AND POWER SUPPLY CIRCUIT 

CRT TV SERVICE MODE AND POWER SUPPLY CIRCUIT 


How to Access Service Mode
1. To enter Service Mode, press the keys on the remote control according to the following sequence. (in Stand-by status)
Info → Menu → Mute → Power On


When failing to enter Service Mode, repeat the procedure above.
2. The initial screen of Service Mode
3. Functions of the Keys within Service Mode.
MENU ---- SHOW ALL MENUS
UP AND DOWN--- TO SELECT ITEM
RIGHT AND LEFT -----CHANGE DATA
Adjusting the Picture Size
Since the KS9D chassis has the deflection settings data within the Factory Data, the picture size has to be adjusted when replacing the Main Board or the VCTi Module, according to the following procedures.
1. Display the Lion pattern.
2. Press "Info → Menu → Mute → Power On" using the remote control and enter Factory Mode.
3. Enter Adjust Mode.
4. Adjust the VS, VA, HS items so that the width becomes 92.5 and the height becomes 92.5.
Adjusting the Picture Straight Lines
1. Display the Cross Hatch pattern
2. Adjust settings other than VA,VH and HS so that straight lines are displayed without curves.
3. Adjust the V-Linearity and V-SC settings so that the intervals of the horizontal lines become uniform.
4. When the adjustments are complete, display the Lion pattern and check that the picture size has not been changed. If there is no change, finish the adjustments.
Adjusting the Focus
1. Display the CROSS Hatch pattern.
2. Turn the Focus clockwise to the optimal position.
3. Slowly turn the Focus clockwise so that the cross line is the most clearly displayed.
Adjusting the Screen Voltage
1. Select "Info → Menu → Mute → Power On " to enter Factory Mode.
2. Use remocon come into " G2 Adjust" mode by hand or automatically.
3. Turn Screen VR of FBT and confirm the characters below changed to GREEN.
Adjusting the White Balance
1. Initialize all settings to the values appropriate to the corresponding model.
2. Select "Info → Menu → Mute → Power On " to enter Factory Mode.
3. Initialize all settings to the values appropriate to the corresponding model.
4. Display the Toshiba pattern and adjust the White Balance using CA100 with the coordinates of the corresponding model
5. Enter Adjust of Service Mode. Adjust Low/Light.
- Adjust Sub Bright to set Y.
- Adjust B Cutoff to set y.
- Adjust R Cutoff to set x.
6. Enter Adjust of Service Mode. Adjust High/Light.
- Adjust Sub Contrast to set Y.
- Adjust B Drive to set y.
- Adjust R Drive to set x.
7. Check Low/Light and readjust it if its value has been changed.
8. If you have readjusted Low/Light, readjust High/Light until the two values are identical to the coordinates of the corresponding model.
Check List for the Screen Voltage and White Balance Adjustment
1. The Screen Voltage and White Balance are connected each other, and both of them have to be configured to the correct values.
2. Adjust the White Balance after the Screen Voltage was adjusted, and check if the Screen Voltage is normal after adjusting the White Balance.
3. If the White Balance is readjusted, check the Screen Voltage again.
4. When the adjustment is finished, check the following checklist.
- If there is a spot on the screen when turning the TV set off/on, adjust the screen Voltage again.
- If there is a ghost line on the screen, adjust the screen Voltage again.
POWER SUPPLY CIRCUIT 


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Posted By: FRANK at 10:46
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