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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Tuesday, 19 March 2019

VIEWSONIC - N2751 - 27" LCD TV - SERVICE MODE - PASSWORD - INITIALIZATION - VGA DDC KEY IN PROCEDURE

VIEWSONIC - N2751 - 27" LCD TV - SERVICE MODE - PASSWORD - INITIALIZATION - VGA DDC KEY IN PROCEDURE


TO ENTER SERVICE MODE
  • Press ’POWER’, ‘’and ‘ENTER’ at the same time, then go into the FACTORY MODE [SERVICE MODE.]
  • Initialization of EEPROM: Select EEPROM INITIAL and press ENTER. The act of EEPROM INITIAL is completed when EEPROM INIT disappeared.
Initial password: 0000
  • If you forget your initial password, you can press"8866"to resume.
VGA DDC KEY IN
Every time after replacing the main board, you have to do the DDC key in.
If you find the DDC does not conform to the LCD TV, you have to do the DDC key in.
Equipment Needed
  1. N2751W LCD TV
  2. DDC Card
  3. PC
  4. RS-232 cable
  5. Barcode Reader
  6. VGA Cable
  • Connect Power Cord to N2751W LCD TV.
  • Barcode Reader connects with keyboard and PC keyboard port.
  • Connect VGA Card and DDC Card with RS-232 cable.
  • Connect DDC Card and N2751W LCD TV with VGA Cable. (When key in DVI DDC information, use VGA transform to DVI port.)
Key In Procedure
  • Run DDC.exe
  • Choose model number and conform the Time then Press “ENTER” key.
  • When appear the PIC “ choose DDC Card”, Press ALT+2 Enter DDC 2B test interface.
  • Choose DDC Card.
  • Press F8 to choose corresponding model. DAT (N2751W-A.DAT press “ENTER” key)
  • Press F9 to enter the download interface.
  • Key in the serial number or use the barcode reader to scan the barcode of the LCD TV, and press “ENTER” key.
  • The successful picture is as follows. “Compare EDID: OK! Press any key to continue”.
CHECK METHOD
  • Use ViewSonic EDID Editor.
  • Connect the N2751W LCD TV to PC with VGA Cable. Execute the EDID Editor, then Press Ctrl+F5. If the DDC is correct, you can see the information as follow: