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 !

Saturday 9 March 2019

SAMSUNG PPM63H3X/XSF PLASMA SERVICE MODE AND DETAILED POWER SUPPLY CIRCUIT

SAMSUNG PPM63H3X/XSF PLASMA SERVICE MODE AND DETAILED POWER SUPPLY CIRCUIT


SAMSUNG PPM63H3X/XSF 

PLASMA DISPLAY 


SERVICE MODE AND POWER SUPPLY CIRCUIT

SERVICE MODE
HOW TO ENTER TO SERVICE MODE 
1. Turn the power off and set to stand-by mode.

2. Press the buttons of the transmitter in this order; Info-Menu-Mute-Power or Mute-1-8-Power to turn the set on.

3. The set turns on and enters service mode.
UP/DOWN Key > Cursor move to select items
LEFT/RIGHT Key > Enable to increase and decrease the data of the selected items
White Balance Adjustment
1. W/B Adjustment is required for the following four modes: DVI > DTV > PC > CVBS(VIDEO) > CVBS(VIDEO PIP)

2. Adjustment Method (DVI, DTV, PC : VG828, CVBS : Adjust RF signals to match the Toshiba pattern (in-house signal)

A. Adjust the target set by adjusting the panel logic and the video DNIe adjustment register in register in order to determine the referential W/B of the panel with a DVI input, which is the full digital path.

B. For DTV adjustment, adjust the adjustment register of ad9888 to align the DTV signal to the DNIe and logic panel value which was fixed with a DVI adjustment so that they are in effect considered to be the same signals. (At this time, do not adjust the gain of AD988> the Highlight W/B does not need to be adjusted since its deviation falls within valid distribution range.)

C. PC adjustment is same as DTV adjustment. (The offset can be applied to the values obtained through DTV adjustment. However, additional adjustment is required for Y, Cb, and Cr of DTV since PC processes R, G, and B signals.)

D. cvbs adjustment is performed with the Toshiba pattern (in-house signal) and differs from the VG828 signals in the above three modes. Hence, it should be performed with the same method of  DVI adjustment.

E. Finally, activate PIP in video mode, and repeat W/B adjustment.
Thus, Micom saves the W/B data separately for each memory mode of the block
DETAILED POWER SUPPLY CIRCUIT
CLICK ON THE IMAGES TO ZOOM IN
Posted By: FRANK at 02:59
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