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 !

Friday, 8 March 2019

SAMSUNG WS32Z30HP -WS32Z40HT - CW29Z308T SERVICE MODE AND POWER SUPPLY CIRCUIT

SAMSUNG WS32Z30HP -WS32Z40HT - CW29Z308T SERVICE MODE AND POWER SUPPLY CIRCUIT

SAMSUNG WS32Z30HP -WS32Z40HT - CW29Z308T 

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/DOWN Move the cursor to select an item.
LEFT/RIGHT Adjust the selected configuration value
Service Adjustment
Adjusting the Picture Size
Since the S63B chassis has the deflection settings data within the Factory Data, the picture size has to be adjusted when
replacing the System Board or the Deflection Board, 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 Deflection Mode.
4. Adjust the V-AMP, V-SHIFT, H-AMP and H-SHIFT items so that the width becomes 5 and the height becomes 4.
Adjusting the Picture Straight Lines
1. Display the Cross Hatch pattern.
2.Adjust settings other than V-AMP, V-SHIFT, H-AMP and H-SHIFT so that straight lines are displayed without curves.
3. Adjust BOW and the Angle settings so that the center line becomes a straight line.
4. Adjust the H-Parabola and H-Trapezium settings so that the left and right lines become straight.
5. Adjust the Upper Corner and the Low Corner settings so that the end of the lines become straight.
6. Adjust the V-Linearity and V-SC settings so that the intervals of the horizontal lines become uniform.
7. 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.
Replacements & Calibration
Adjusting the Focus
Since the S63A chassis has a built-in dynamic focus circuit, take care when adjusting the focus. When the CRT PCB, FBT or
CRT has been replaced, the focus has to be adjusted according to the following procedures.
1. Display the CROSS Hatch pattern.
2. Set the Screen Adjustment to "View as Standard".
3. Turn the Static Focus VR clockwise to the maximum position. (End of clockwise direction)
4. Turn the Dynamic Focus VR counter clockwise to the maximum position. (End of counter clockwise direction)
5. Slowly turn the Static Focus VR counter clockwise so that the center vertical line is the most clearly displayed.
6. Slowly turn the Dynamic Focus VR clockwise so that the 2nd line is the most clearly displayed.
7. Check the entire screen focus and repeat steps 3 to 6, if necessary.
Adjusting the Screen Voltage
 1. Select "Info >  Menu >  Mute>  Power On" to enter Service Mode.
2. Initialize all settings to the values appropriate to the corresponding model.
3. Display the Toshiba pattern
4. Using an Oscilloscope, measure the size of RK, BK and GK to the Pedestal Level.
5. Adjust the Screen VR of FEB so that the highest point of the Pedestal Level is 190V. (29" : 180V)
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 Service 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 Video Adjust1 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 Video Adjust1 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 
CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 02:14
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